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Improved Multiple Feature-electrochemical Thermal Coupling Modeling of Lithium-ion Batteries at Low-temperature with Real-time Coefficient Correction

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Protection and Control of Modern Power Systems 2024年第3期9卷 157-173页

作者： Shunli Wang Haiying Gao Paul Takyi-Aninakwa Josep M.Guerrero Carlos Fernandez Qi Huang IET the School of Electric Power Inner Mongolia University of TechnologyInner Mongolia 010051China the School of Information engineering Southwest University of Science and TechnologyMianyang 621010China Southwest University of Science and technology(SWUST) the Smart energy storage Institute the Department of energy technology Aalborg UniversityDenmark Robert Gordon University IEEE Southwest University of Science and technology

Monitoring various internal parameters plays a core role in ensuring the safety of lithium-ion batteries in power supply *** also influences the sustainability effect and online state of charge *** improved multiple feature-electrochemical thermal coupling modeling method is proposed considering low-temperature performance degradation for the complete characteristic expression of multi-dimensional *** is to obtain the parameter influence mechanism with a multi-variable coupling *** optimized decoupled deviation strategy is constructed for accurate state of charge prediction with real-time correction of time-varying current and temperature *** innovative decoupling method is combined with the functional relationships of state of charge and open-circuit voltage to capture energy management ***,an adaptive equivalent-prediction model is constructed using the state-space equation and iterative feedback correction,making the proposed model adaptive to fractional *** maximum state of charge estimation errors of the proposed method are 4.57% and 0.223% under the Beijing bus dynamic stress test and dynamic stress test conditions,*** improved multiple feature-electrochemical thermal coupling modeling realizes the effective correction of the current and temperature variations with noise influencing coefficient,and provides an efficient state of charge prediction method adaptive to complex conditions.

关键词： Adaptive inner state characterization lithium-ion batteries low-temperature automatic-guided-vehicle multiple feature-electrochemical thermal coupling modeling real-time coefficient correction

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Design Strategy of Diagonal Compressors in Compressed Air energy storage System

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Journal of Thermal Science 2024年第3期33卷 872-887页

作者： ZHANG Yuxin ZUO Zhitao GUO Wenbin LIANG Qi CHEN Haisheng Institute of engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China National energy Large Scale Physical energy storage Technologies R&D Center of Bijie Bijie551700China Nanjing Institute of Future energy System IETCASNanjing211135China

As a kind of large-scale physical energy storage,compressed air energy storage(CAES)plays an important role in the construction of more efficient energy system based on renewable energy in the *** with traditional industrial compressors,the compressor of CAES has higher off-design performance *** the perspective of design,it needs to pay attention not only to the performance of the design point,but also to the performance of all the stable working ***,from the previous literature,no diagonal compressor was used in CAES which can meet the requirements,which also reflects the design program can be further ***,this paper studies the design strategy of high efficient diagonal compressor for large-scale CAES,and gives the complete strategy algorithms used for different program *** pressure ratio,isentropic efficiency and stable working range are comprehensively *** the design process,the criteria for the key parameters of the diagonal flow angle of the diagonal compressor are given for the first *** results show that the isentropic efficiency at the design point is 92.7%,the total pressure ratio is1.97,and the stable working range exceeds 20%,which meets the design requirements of the compressor for CAES and exceeds the overall performance of the previous compressors in the entire working range.

关键词： compressed air energy storage design strategy diagonal compressor optimal selection design procedure

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Comparative Analysis of Diagonal and Centrifugal Compressors with Synergy Theory in Compressed Air energy storage System

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Journal of Thermal Science 2024年第4期33卷 1325-1339页

作者： ZHANG Yuxin ZUO Zhitao ZHOU Xin GUO Wenbin CHEN Haisheng Institute of engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China National energy Large Scale Physical energy storage Technologies R&D Center of Bijie Bijie551700China Nanjing Institute of Future energy System IETCASNanjing211135China

energy storage technology is an essential part of the efficient energy *** air energy storage(CAES)is considered to be one of the most promising large-scale physical energy storage *** is favored because of its low-cost,long-life,environmentally friendly and low-carbon *** compressor is the core component of CAES,and the performance is critical to the overall system *** importance is not only reflected in the design point,but also in the continuous efficient operation under variable working *** diagonal compressor is currently the focus of the developing large-scale CAES because of its stronger flow capacity compared with traditional centrifugal *** the diagonal compressor has the higher single stage pressure ratio compared with axial *** this paper,the full three dimensional numerical simulation technologies with synergy theory are used to compare and analyze the internal flow *** performance of the centrifugal and diagonal impellers that are optimized under the same requirements for large-scale CAES has been *** relationship between the internal flow characteristics and performance of the centrifugal and diagonal impellers with the change of mass flow rates and total inlet temperature is given qualitatively and *** the cosine value of the synergy angle is high,the local flow loss is *** smaller proportion of the positive area is the pursuit of *** comparative analysis,it is concluded that the internal flow and performance changes of centrifugal and diagonal impellers are *** results confirm the superiority and feasibility of the off-design performance of the diagonal compressor applied to the developing large-scale CAES.

关键词： compressed air energy storage synergy theory diagonal compressor centrifugal compressor comparative analysis

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Electron delocalization-enhanced sulfur reduction kinetics on an MXene-derived heterostructured electrocatalyst

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Nano Research 2024年第8期17卷 7153-7162页

作者： Yunmeng Li Yinze Zuo Xiang Li Yongzheng Zhang Cheng Ma Xiaomin Cheng Jian Wang Jitong Wang Hongzhen Lin Licheng Ling State Key laboratory of Chemical engineering Key Laboratory of Specially Functional Polymeric Materials and Related Technology(Ministry of Education)East China University of Science and TechnologyShanghai 200237China Institute of New energy Materials and engineering College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China Key laboratory of Specially Functional Polymeric Materials and Related technology(Ministry of Education) School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China i-Lab&CAS Key laboratory of Nanophotonic Materials and Device Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123China Helmholtz Institute Ulm(HIU) D89081 UlmGermany

Lithium-sulfur(Li-S)batteries mainly rely on the reversible electrochemical reaction of between lithium ions(Li^(+))and sulfur species to achieve energy storage and conversion,therefore,increasing the number of free Li^(+)and improving the Li^(+)diffusion kinetics will effectively enhance the cell ***,Mo-based MXene heterostructure(MoS_(2)@Mo_(2)C)was developed by partial vulcanization of Mo_(2)C MXene,in which the introduction of similar valence S into Mo-based MXene(Mo_(2)C)can create an electron delocalization *** theoretical simulations and electrochemical characterisation,it is demonstrated that the MoS_(2)@Mo_(2)C heterojunction can effectively promote ion desolvation,increase the amount of free Li^(+),and accelerate Li^(+)transport for more efficient polysulfide *** addition,the MoS_(2)@Mo_(2)C material is also capable of accelerating the oxidation and reduction of polysulfides through its sufficient defects and vacancies to further enhance the catalytic ***,the Li-S battery with the designed MoS_(2)@Mo_(2)C electrocatalyst performed for 500 cycles at 1 C and still maintained the ideal capacity(664.7 mAh·g^(−1)),and excellent rate performance(567.6 mAh·g^(−1)at 5 C).Under the extreme conditions of high loading,the cell maintained an excellent capacity of 775.6 mAh·g^(−1)after 100 *** also retained 838.4 mAh·g^(−1)for 70 cycles at a low temperature of 0℃,and demonstrated a low decay rate(0.063%).These results indicate that the delocalized electrons effectively accelerate the catalytic conversion of lithium polysulfide,which is more practical for enhancing the behaviour of Li-S batteries.

关键词： delocalized electron lithium sulfur batteries MXene-based heterostructures catalytic desolvation multi-catalytic sites

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Construction of CoNi_(2)S_(4) nanocubes interlinked by few-layer Ti_(3)C_(2)T_(x) MXene with high performance for asymmetric supercapacitors

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Rare Metals 2022年第12期41卷 4116-4126页

作者： Ji-Qiu Qi Meng-Yuan Huang Chen-Ya Ruan Dong-Dong Zhu Lei Zhu Fu-Xiang Wei Yan-Wei Sui Qing-Kun Meng jiangsu province engineering laboratory of high efficient energy storage technology and equipments School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou 221116China Key laboratory of Air-Driven Equipment technology of Zhejiang province Quzhou UniversityQuzhou 324000China

Both MXene and zeolitic imidazolate framework(ZIF)derivatives are tend to agglomerate during the compound process,which adversely affects their electrochemical *** alleviate this phenomenon,fewlayer MXene was stripped by mechanical method,and electrostatic self-assembly with ZIF-67 in the presence of cationic ***,CoNi_(2)S_(4)/MXene composite was synthesized by the facile hydrothermal ***_(2)S_(4)well retained the cube frame structure of the ZIF-67 with the sagging outer frame and rough *** the composite,CoNi_(2)S_(4)nanocubes were interlinked by MXene nanosheets,which can effectively improve the structural stability and make full use of the active ***_(2)S_(4)/MXene composite electrode exhibits an outperforming specific capacitance(751 C·g^(-1)at 1 A·g^(-1)),far higher than that of pure CoNi2S4(600 C·g^(-1)at 1 A·g^(-1)).An asymmetric supercapacitor(CoNi_(2)S_(4)/MXene//reduced graphene oxide(RGO))assembling delivers high energy density of 33.8 Wh·kg^(-1)and excellent cycling *** study indicates the potential of MXene/ZIF derivatives in the application of supercapacitor.

关键词： Cubic frame structure Few-layer MXene ZIF-67 Asymmetric supercapacitor

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Mn single-atoms decorated CNT electrodes for high-performance supercapacitors

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Nano Research 2024年第5期17卷 4039-4046页

作者： Qian Rong Chao Yuwen Yingkai Liu Yuanrong Liu Chunyang Wang Yang Wang Ding Zhang Zhen Wen Yunnan Key laboratory of Opto-Electronic Information technology Institute of Physics and Electronic InformationYunnan Normal UniversityKunming 650500China Faculty of Metallurgical and energy engineering Kunming University of Science and TechnologyKunming 650093China Department of Physics and Astronomy University of CaliforniaIrvineCA 92697USA School of Materials Science and engineering National Institute for Advanced MaterialsSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China jiangsu Key laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano and Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123China

Developing highly robust and efficient electrode materials is of critical importance to promoting the energy density of current supercapacitors for ***,we report an efficient catalyst with monodispersed Mn single-atoms embedded in carbon nanotubes(Mn-CNTs)for enhancing the electrode performance of supercapacitors.A high specific capacitance(1523.6 F·g^(-1) at 1.0 A·g^(-1))can be achieved,which is about twice as high as the specific capacitance of the electrode material without the introduction of Mn ***,the asymmetric electrochemical capacitor created with Mn-CNT and activated carbon exhibits a high energy density of 180.8 Wh·kg^(-1) at a power density of 1.4 kW·kg^(-1),much higher than most reported *** study shows that the integration of Mn atoms into the CNT can enhance the charge transport capacity and the number of polar active sites of Mn-CNT and then facilitate chemical interactions between Mn-CNT and OH-.This work provides a novel strategy to enable high-energy storage in supercapacitors by introducing single-atoms into carbon nanotubes to improve electrodes’energy density and cycle life.

关键词： carbon nanotube(CNT) supercapacitor single-atoms power density energy density

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Textured Perovskite/Silicon Tandem Solar Cells Achieving Over 30% Efficiency Promoted by 4-Fluorobenzylamine Hydroiodide

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Nano-Micro Letters 2024年第9期16卷 557-570页

作者： Jingjing Liu Biao Shi Qiaojing Xu Yucheng Li Yuxiang Li Pengfei Liu Zetong SunLi Xuejiao Wang Cong Sun Wei Han Diannan Li Sanlong Wang Dekun Zhang Guangwu Li Xiaona Du Ying Zhao Xiaodan Zhang Renewable energy Conversion and storage Center Solar Energy Conversion CenterInstitute of Photoelectronic Thin Film Devices and TechnologyNankai UniversityTianjin 300350People’s Republic of China Key laboratory of Photoelectronic Thin Film Devices and technology of Tianjin Tianjin 300350People’s Republic of China Haihe laboratory of Sustainable Chemical Transformations Tianjin 300192People’s Republic of China engineering Research Center of Thin Film Photoelectronic technology of Ministry of Education Tianjin 300350People’s Republic of China Collaborative Innovation Center of Chemical Science and engineering(Tianjin) Tianjin 300072People’s Republic of China Center of Single‑Molecule Sciences Institute of Modern OpticsTianjin Key Laboratory of Micro‑Scale Optical Information Science and TechnologyCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan RoadJinnan DistrictTianjin 300350People’s Republic of China Shenzhen Research Institute of Nankai University 16Th FloorYantian Science and Technology BuildingHaishan StreetYantian DistrictShenzhen 518083People’s Republic of China

Monolithic textured perovskite/silicon tandem solar cells(TSCs)are expected to achieve maximum light capture at the lowest cost,potentially exhibiting the best power conversion ***,it is challenging to fabricate high-quality perovskite films and preferred crystal orientation on commercially textured silicon substrates with micrometersize ***,we introduced a bulky organic molecule(4-fluorobenzylamine hydroiodide(F-PMAI))as a perovskite *** is found that F-PMAI can retard the crystallization process of perovskite film through hydrogen bond interaction between F^(−)and FA^(+)and reduce(111)facet surface energy due to enhanced adsorption energy of F-PMAI on the(111)***,the bulky molecular is extruded to the bottom and top of perovskite film after crystal growth,which can passivate interface defects through strong interaction between F-PMA+and undercoordinated Pb^(2+)/I^(−).As a result,the additive facilitates the formation of large perovskite grains and(111)preferred orientation with a reduced trap-state density,thereby promoting charge carrier transportation,and enhancing device performance and *** perovskite/silicon TSCs achieved a champion efficiency of 30.05%based on a silicon thin film tunneling *** addition,the devices exhibit excellent longterm thermal and light stability without *** work provides an effective strategy for achieving efficient and stable TSCs.

关键词： Perovskite crystallization (111)preferred orientation Defect passivation Perovskite/silicon tandem solar cells

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A modular approach to efficient thermally activated delayed fluorescence from metal-perturbed intraligand charge-transfer excited state of Au(I) complexes

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Science China Chemistry 2024年

作者： Jian-Gong Yang Xingyu Feng Guohua Xie Nengquan Li Jiayu Li Xiu-Fang Song Ming-De Li Jingling Zhang Xiaoyong Chang Kai Li Shenzhen Key laboratory of New Information Display and storage Materials Guangdong Provincial Key Laboratory of New Energy Materials Service Safety College of Materials Science and Engineering Shenzhen University Hubei Key laboratory of Biomass Fibers and Eco-dyeing & Finishing Department of Chemistry and Chemical EngineeringWuhan Textile University The Institute of Flexible Electronics (Future Technologies) Xiamen University Key laboratory for Preparation and Application of Ordered Structural Materials of Guangdong province Department of ChemistryShantou University Department of Chemistry Southern University of Science and Technology

The efficient harvesting of triplet excitons is crucial to the realization of high-performance organic light-emitting diodes（OLEDs）.Herein,we show that coordination of donor-acceptor （D-A） type molecules to a metal atom in a monodentate fashion can lead to thermally activated delayed fluorescence （TADF） emissions with wide color tunability only through varying the noncoordinating acceptor moiety.A panel of TADF gold（I） complexes with emission maxima (λmax) of 545–645 nm from metal perturbed intraligand charge-transfer （MPICT） excited states have been *** effects of heavy atom-induced spin-orbit coupling （SOC）,steric-induced donor-acceptor twisting and suppressed intramolecular motions lead to high emission efficiencies of 65%?85% in doped films with delayed fluorescence lifetime of as short as 2.0μ*** absorption spectroscopic studies on selected complexes determined the kISCto be 6.5×10～*** calculations confirmed the participation of minor d orbital into the lowest excited state,which led to an SOC value of 5.19 cm-1between the lowest-lying singlet and triplet excited *** yellow to deep red solution-processed OLEDs based on the new gold（I） complexes incorporated with various D-A ligands demonstrated promising *** study validates a modular design for TADF metal complexes,which will broaden the choices of metal centers and allow for facile color tuning via simple ligand synthesis.

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Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

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Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun Fen Xu Yu-Mei Luo Yong-Peng Xia Sheng Wei Chen-Chen Zhang Ri-Guang Cheng Chao-Feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong Cao Hong-Ge Pan School of Material Science and engineering Guilin University of Electronic TechnologyGuilin541004China School of Chemistry and Chemical engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and technology for New energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810C,which is 2300C lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

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highly efficient chemicalproductionviaelectrified,transient high-temperature synthesis

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eScience 2024年第4期4卷 41-53页

作者： Yichen Dong Yi Rao Hanwen Liu Hao Zhang Rong Hu Yingquan Chen Yonggang Yao Haiping Yang State Key laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key laboratory of Materials Processing and Die&Mould technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In response to the current energy and environmental challenges,reducing or replacing reliance on fossil fuels and striving for carbon neutrality seems to be the only viable ***,a cutting-edge,eco-friendly method of chemical synthesis via transient Joule heating(JH)demonstrated significant promise across various domains,including methane reforming,ammonia synthesis,volatile organic compounds removal,plastic recycling,the synthesis of functional carbon materials from repurposed solid waste,*** this review,the advantages,and latest developments in thermochemical synthesis by flash and transient JH are comprehensively *** the ongoing heating process of conventional furnaces that consume fossil fuels,dynamic and transient JH can get significantly higher reaction rates,energy efficiency,flexibility,and ***,the transient reaction mechanism,data science optimization,and scale-up production models are discussed,and prospects for the integration of the electrified chemical industry with renewable energy for carbon neutrality and long-term energy storage are also envisioned.

关键词： Electrified chemicalsynthesis Transient heating Low-carbon production Gas-phasereaction Solid waste

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