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A strategy based on water soluble coal tar pitches to construct MnO_(2)@C composite materials with high electrochemical performance

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Science China(Technological Sciences) 2024年第1期67卷 311-320页

作者： LIU Bo WANG Kun GUO ZhaoQi HAN BeiBei XU GuiYing JU DongYing AN BaiGang LI YongCheng NI ZhenYong ZHOU WeiMin key laboratory of Energy Materials and Electrochemistry Research Liaoning Province University of Science and Technology LiaoningAnshan 114051China Advanced Science Research laboratory Saitama Institute of TechnologyFusaiji 1690Japan Liaoning Starry Sky Sodium battery Co. Ltd.Anshan 114051China Sinosteel Anshan Research Institute of Thermo-Energy Co. Ltd.Anshan 114051China State key laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China key laboratory of Advanced fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China

The water soluble coal tar pitches(WS-CTPs)were successfully prepared and used to construct the MnO_(2)@C composite materials by a hydrothermal *** is interestingly observed that the structures and morphologies of MnO_(2)@C materials can be controlled by controlling the dosages of WS-CTPs and ***,it is aware that MnO_(2)exists in the MnO_(2)@C materials in an amorphous *** with MnO_(2),MnO_(2)@C materials output a remarkable improvement in electrochemical *** instance,MnO_(2)@C-0.3 shows the storage capacity at 965.7 mA h g^(−1)after 300 cycles at a current density of 0.1 A g^(−1).In addition,after 600 cycles at a current density of 1.0 A g^(−1),the storage capacity of MnO_(2)@C-0.3 still keeps 450.3 mA h g^(−1),indicating that MnO_(2)@C-0.3 owns tremendous cycle stability at a high current *** view of the fact that the coal tar pitches possess great cost advantages,the strategy of using WS-CTPs as a carbon source to cover the metal oxides is a competitive way to expand the application of metal oxides in the fabrication of electrodes of LIBs.

关键词： water soluble coal tar pitches MnO_(2) composite materials lithium ion batteries(LIBs) energy storage systems(ESSs) coal tar pitches

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Micro-structured lepidocrocite-type H_(1.07)Ti_(1.73)O_(4)as anode for lithium-ion batteries with an ultrahigh rate and long-term cycling performance

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Rare metals 2021年第6期40卷 1391-1401页

作者： Li-Juan Hou Rui-Chao Liu Hui-Yu Yuan De-Zhi Kong Wei-Xia Shen Jin-Hao Zang Juan Guo Shu-Ge Dai Ming-Lang Wang Ting-Ting Xu Xin-Jian Li Ye Wang key laboratory of Material Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450052China key laboratory of henan Province for High Temperature Functional Materials Zhengzhou 450000China Shandong key laboratory of Medical Physics and Image Processing&Shandong provincial Engineering and Technical Center of Light Manipulations School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

The lepidocrocite-type H_(1.07)Ti_(1.73)O_(4) microsized structures with a tap density of 0.88 g·cm^(-3) were prepared through the ion exchange method with K_(0.8)Li_(0.27)Ti_(1.73)O_(4) powder as the precursor,and they exhibited good rate performance and outstanding cycle stability as an anode material for lithium ion batteries(LIB).The ion exchange method provides favorable conditions for H_(1.07)Ti_(1.73)O_(4) as an anode electrode material for LIBs.X-ray photoelectron spectroscopy(XPS)result demonstrates the existence of defects in the nonstoichiometric H1.07Ti1.73O4,which have a beneficial effect on the LIB *** electrochemical performance test proves that the half-cell with microsized H_(1.07)Ti_(1.73)O_(4)as the anode electrode can maintain a specific capacity of 129.5 mAh·g^(-1) after 1100 cycles and 101 mAh·g^(-1)after 3000 long cycles at high current densities of 2.0 and 5.0 A·g^(-1),*** addition,the small volume change rate of 3.6%in H_(1.07)Ti_(1.73)O_(4)during Li ion insertion was confirmed by real-time in situ transmission electron microscopy(TEM).The LiFePO_(4)||H_(1.07)Ti_(1.73)O_(4)full battery exhibits a longterm cycling stability with a specific capacity of73.8 mAh·g^(-1) at a current density of 500 mA·g^(-1) after 200 cycles.

关键词： Lepidocrocite-type H_(1.07)Ti_(1.73)O_(4) Anode material of lithium ion batteries Long cycle stability

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High-modulus solid electrolyte interphase layer with gradient composition enables long-cycle all-solid-state lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第11期98卷 87-95页

作者： Huanhuan Duan Jinhai Liu Jiafeng He Linyuan Ma Yuanfu Deng Guohua Chen Guangdong provincial key laboratory of fuel Cell Technology School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640GuangdongChina Guangdong provincial Research Center of Electrochemical Energy Engineering South China University of TechnologyGuangzhou 510640GuangdongChina School of Energy and Environment City University of Hong KongTat Chee AvenueKowloonHong Kong 999077China

All-solid-state lithium-sulfur batteries(ASSLSBs) have become one of the most potential candidates for the next-generation high-energy systems due to their intrinsic safety and high theoretical energy ***, PEO-based ASSLSBs face the dilemma of insufficient Coulombic efficiency and long-term stability caused by the coupling problems of dendrite growth of anode and polysulfide shuttle of cathode. In this work, 1,3,5-trioxane(TOX) is used as a functional additive to design a PEO-based composite solidstate electrolyte(denoted as TOX-CSE), which realizes the stable long-term cycle of an ASSLSB. The results show that TOX can in-situ decompose on the anode to form a composite solid electrolyte interphase(SEI) layer with rich-organic component. It yields a high average modulus of 5.0 GPa, greatly improving the mechanical stability of the SEI layer and thus inhibiting the growth of dendrites. Also,the robust SEI layer can act as a barrier to block the side reaction between polysulfides and lithium *** a result, a Li-Li symmetric cell assembled with a TOX-CSE exhibits prolonged cycling stability over 2000 h at 0.2 m A cm^(-2). The ASSLSB also shows a stable cycling performance of 500 cycles at 0.5 *** work reveals the structure–activity relationship between the mechanical property of interface layer and the battery's cycling stability.

关键词： All-solid-state lithium-sulfur batteries PEO-based electrolyte SEI layer High modulus Long cycling stability

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Synthesis and application of single-atom catalysts in sulfur cathode for high-performance lithium–sulfur batteries

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Chinese Chemical Letters 2023年第1期34卷 73-83页

作者： Yingjie Miao Yufan Zheng Feng Tao Zhijun Chen Yi Xiong Fengzhang Ren Yong Liu provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science and Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China School of Intelligent Manufacturing Ecosystem Xi’an Jiaotong–Liverpool UniversitySuzhou 215123China Luoyang Bearing Research Institute Co. Ltd.Luoyang 471039China

Lithium–sulfur(Li-S)batteries are regarded as one of the most promising energy storage devices because of their low cost,high energy density,and environmental ***,Li-S batteries suffer from sluggish reaction kinetics and serious“shuttle effect”of lithium polysulfides(LiPSs),which causes rapid decay of battery capacity and prevent their practical *** address these problems,introducing single-atom catalysts(SACs)is an effective method to improve the electrochemical performance of Li-S batteries,due to their high catalytic efficiency and definite active sites for *** this paper,we summarized the latest developments in enhancing the electrochemical performance of cathode for Li-S batteries through introducing different ***,we briefly introduced the catalytic mechanism of SACs and discussed the strategies of synthesizing SACs,including the spatial confinement strategy and the coordination design ***,the challenges and prospects in this field are *** believe that this review would help to design and fabricate high-performance Li-S batteries via introducing SACs and boost their practical application.

关键词： Single-atom catalysts Lithium-sulfur batteries Sulfur cathode Synthesis and application Polysulfide conversion Shuttle effect

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Isolated Co Atoms Anchored on Defective Nitrogen-doped Carbon Graphene as Efficient Oxygen Reduction Reaction Electrocatalysts

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Energy & Environmental Materials 2023年第3期6卷 144-149页

作者： Peng Rao Junming Luo Daoxiong Wu Jing Li Qi Chen Peilin Deng Yijun Shen Xinlong Tian State key laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China

Oxygen reduction reaction(ORR)is the heart of many new energy conversions and storage devices,such as metal-air batteries and fuel ***,ORR is currently facing the dilemma of sluggish intrinsic kinetics and the noble electrocatalysts of high price and low *** this work,isolated Co atoms anchored on defective nitrogen-doped carbon graphene single-atom catalyst(Co-SAC/NC)are synthesized via the proposed movable type printing *** prepared Co-SAC/NC catalyst demonstrates admirable ORR performance,with a high half-wave potential of 0.884 V in alkaline electrolytes and outstanding *** addition,an assembled zinc–air battery with prepared Co-SAC/NC as air-cathode catalyst displays a high-peak power density of 179 mW cm^(-2)and a high-specific capacity(757 mAh g^(-1)).Density functional theory calculations confirm that the true active sites of the prepared catalyst are Co-N_(4)moieties,and further reveal a significantly electronic structure evolution of Co sites in the ORR process,in which the project density of states and local magnetic moment of Co atom varies during its whole reaction *** work not only paves a new avenue for synthesizing SACs as robust electrocatalysts,but also provides an electronic-level insight into the evolution of the electronic structure of single-atom catalysts.

关键词： movable type printing method oxygen reduction reaction single-atom catalyst zinc-air battery

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Intrinsically zincophobic protective layer for dendrite-free zinc metal anode

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Chinese Chemical Letters 2022年第5期33卷 2653-2657页

作者： Chunlin Xie Qi Zhang Zefang Yang Huimin Ji Yihu Li Huanhuan Li Liang Fu Dan Huang Yougen Tang Haiyan Wang Hunan provincial key laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China College of Materials Science and Engineering Chongqing UniversityChongqing 400045China Guangxi Novel battery Materials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China

Aqueous zinc anodes have attracted the attention of many researchers owing to their high safety,low cost,and high theoretical specific ***,its practical application is severely limited by the dendrite growth on zinc ***,we develop an intrinsically zincophobic barium-titanate protective layer with a porous structure to suppress the zinc dendrite formation by homogenizing the ion distribution on the anode surface,increasing the nucleation sites,and limiting the irregular zinc *** on these synergistic effects,the coated zinc anode can exhibit long cycle life(840 h at 0.5 mA/cm^(2) for 0.5 mAh/cm^(2))and low voltage hysteresis(36 mV).This work can provide a feasible direction for the design of intrinsically zincophobic coating materials to uniformize the zinc stripping and plating.

关键词： Zinc metal anode Zinc dendrites Barium-titanate Protective layer Intrinsically zincophobicity

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Nitric oxide assists nitrogen reduction reaction on 2D MBene: A theoretical study

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Chinese Chemical Letters 2024年第5期35卷 428-433页

作者： Chaozheng He Jia Wang Ling Fu Wei Wei henan Engineering Center of New Energy battery Materials College of Chemistry and Chemical EngineeringShangqiu Normal UniversityShangqiu 476000China School of Chemistry and Chemical Engineering Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage&Novel Cell TechnologyLiaocheng UniversityLiaocheng 252059China Institute of Environment and Energy Catalysis Shaanxi Key Laboratory of Optoelectronic Functional Materials and DevicesSchool of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’an 710021China College of Resources and Environmental Engineering Tianshui Normal UniversityTianshui 741001China

Electrocatalytic synthesis of ammonia as an environment-friendly and sustainable development method has received widespread attention in recent ***-dimensional(2D)materials are a promising catalyst for ammonia synthesis due to their large surface *** this work,we have constructed a series of 2D metal borides(MBenes)with transition metal(TM)defects(TMd-MBenes)and comprehensively calculated the reactivity of electrocatalytic synthesis of ammonia-based on density functional *** results have demonstrated that the TMd-MBenes can effectively activate nitrogen oxide(NO)and nitrogen(N2)molecules *** interesting,the co-chemisorption of O atoms,dissociated from NO,can facilitate the spilled of the inert N2 molecules into single N atoms,which can further hydrogenate into ammonia easily with an ultralow limiting potential of 0.59 V on *** research has not only provided clues for catalyst design for experimental study but also paved the way for the industrial application of electrocatalytic ammonia synthesis.

关键词： 2D mbenes Nitrogen electro-reduction DFT N_(2)activation Ammonia synthesis

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Intermolecular Acid-Base-Pairs Containing Poly(p-Terphenyl-co-lsatin Piperidinium)for High Temperature Proton Exchange Membrane fuel Cells

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Energy & Environmental Materials 2024年第3期7卷 406-414页

作者： Xiaofeng Hao Zhen Li Min Xiao Zhiheng Huang Dongmei Han Sheng Huang Wei Liu Shuanjin Wang Yuezhong Meng The key laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong Province State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China School of Chemical Engineering and Technology Sun Yat-sen UniversityZhuhai 519000China Institute of Chemistry Henan Provincial Academy of SciencesZhengzhou 450000China Research Center of Green Catalysts College of ChemistryZhengzhou UniversityZhengzhou 450001China

How to optimize and regulate the distribution of phosphoric acid in matrix,and pursuing the improved electrochemical performance and service lifetime of high temperature proton exchange membrane(HT-PEMs)fuel cell are significant ***,bifunctional poly(p-terphenyl-co-isatin piperidinium)copolymer with tethered phosphonic acid(t-PA)and intrinsic tertiary amine base groups are firstly prepared and investigated as *** distinctive architecture of the copolymer provides a well-designed platform for rapid proton *** not only transports through the hydrogen bond network formed by the adsorbed free phosphoric acid(f-PA)anchored by the tertiary amine base groups,but also rely upon the proton channel constructed by the ionic cluster formed by the t-PA *** the design of the structure,the bifunctional copolymers with lower PA uptake level(<100%)display prominent proton conductivities and peak power densities(99 mS cm^(-1),812 mW cm^(-2)at 160℃),along with lower PA leaching and higher voltage stability,which is a top leading result in disclosed *** results demonstrate that the design of intermolecular acid-base-pairs can improve the proton conductivity without sacrificing the intrinsic chemical stability or mechanical property of the thin membrane,realizing win-win demands between the mechanical robustness and electrochemical properties of HT-PEMs.

关键词： bifunctional copolymer high temperature proton exchange membrane intermolecular acid-base-pairs phosphonic acid retention phosphonic acid uptake level

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Design and Strategy of Series-Parallel Hybrid System Based on BSFC

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Journal of Beijing Institute of Technology 2018年第4期27卷 564-574页

作者： Huien Gao Liang Chu Jianhua Guo Dianbo Zhang State key laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China Jilin provincial Institute of Standards Changchun 130022China

In this paper,a drive control strategy is developed based on the characteristics of series-parallel plug-in hybrid *** management strategies in various modes are established with the basis on the minimum brake specific fuel consumption(BSFC)curve of *** control strategy,which is based on rules and system efficiency,is adopted to determine the entry/exit mechanisms of various modes according to battery state of charge(SOC),required power and required *** vehicle test results verify that the proposed control strategy can improve vehicle economy efficiently and makes a good effect on engine control.

关键词： series-parallel plug-in hybrid electric vehicle(PHEV) based on rules based on system efficiency

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Novel fusiform core-shell-MOF derived in tact metal@carb on composite:An efficient cathode catalyst for aqueous and solid-state Zn-air batteries

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Journal of Energy Chemistry 2022年第1期31卷 385-394,I0011页

作者： Di Zhou Hongquan Fu Jilan Long Kui Shen Xinglong Gou Chemical Synthesis and Pollution Control key laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637000SichuanChina key laboratory of fuel Cell Technology of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640GuangdongChina

Owing to the varied mechanisms of ORR/OER,exploiting cost-effective bifunctional catalysts with robust ORR/OER activities and excellent performances in Zn-air batteries is still a *** this work,the Co/CoO@NSC bifunctional catalyst is obtained by using Zn-MOF@Co-MOF as *** Co/CoO@NSC composite has interconnected porous architecture with in tact metal@carb on structure,exhibiting superior electrocatalytic activities toward ORR and OER that can be comparable with the Pt/C and RuO_(2) catalysts,*** Co/CoO@NSC-based aqueous Zn-air battery achieves a high specific capacity(759.7 mAh/g)and energy density(990.5 Wh/kg),and ultra-long rechargeable property(more than 400 h/1200 cycles).The Co/CoO@NSC-based solid-state Zn-air battery also delivers an excellent performance with a long cycle life(more than 143 h/858 cycles).Most importantly,the newly synthesized and recharged Co/CoO@NSC-based solid-state Zn-air battery can be used to light up a 2 V LED lamp for more than 28 h,demonstrating the superior practicability as rechargeable power source.

关键词： Core-shell structure metal organic framework Aqueous Zn-air battery Solid-state Zn-air battery Ultra long cycle life

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