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Hierarchical Fe_(x)Bi_(2−x)S_(3) solid solutions for boosted supercapacitor performance

Nano research 2024年第5期17卷 3997-4005页

作者： Fengming Zhou Xiaodong Wang Ruijie Jing Xiaoyu Li Qi Zhang Zhenjiang Li Yunmei Du Zhenyu Xiao Lei Wang International Cooperation United Laboratory of Eco-chemical Engineering and Green Manufacturing College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Technology Innovation center of Battery Safety and Energy Storage Technology QingdaoInternational Science and Technology Cooperation Base of QingdaoCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

For the pursuit of high energy supercapacitors,the development of high performance pseudocapacitance or battery-type negative electrode material is urgently needed to make up for the capacity shortage of commercial electric double layer capacitor(EDLC)type ***,a porous and defect-rich Fe_(x)Bi_(2-x)S_(3) solid solution structure is firstly constructed by employing Fe-doped Bi_(2)O_(2)CO_(3) porous nanosheets as a precursor,which presents dramatically increased energy storage performance than Bi_(2)S_(3) and FeS_(2) *** the optimized Fe_(x)Bi_(2-x)S_(3) solid solution(FeBiS-60%),the Fe solute is free and random dispersed in Bi_(2)S_(3) framework,which can effectively modulate the electronic structure of Bi element and introduce rich-defect due to the existence of Fe(II).Meanwhile,the FeBiS-60%,constructed by pore nanosheets that are assembled by self-supported basic nanorod units,presents rich mesoporous channels for fast mass transfer and abundant active sites for promoting capacity ***,a high capacitance of 832.8 F·g^(-1) at a current density of 1 A·g^(-1) is achieved by the FeBiS-60%***,a fabricated Ni3S_(2)@Co_(3)S_(4)(NCS)//FeBiS-60%hybrid supercapacitor device delivers an outstanding energy density of 85.33 Wh·kg^(-1) at the power density of 0.799 kW·kg^(-1),and ultra-long lifespan of remaining 86.7%initial capacitance after 8700 cycles.

关键词： supercapacitor solid solutions defect structure hierarchical structure Bi_(2)S_(3)

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Platelet-based bioactive systems guided precision targeting and immune regulation for cancer therapy

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Nano research 2024年第9期17卷 8269-8284页

作者： Xinyi Cai Long Qiu Zhenying Diao Lintao Cai Ting Yin Hong Pan Guangdong Key Laboratory of Nanomedicine CAS-HK Joint Lab of BiomaterialsCAS Key Laboratory of Biomedical Imaging Science and SystemInstitute of Biomedicine and BiotechnologyShenzhen Institute of Advanced Technology(SIAT)Chinese Academy of SciencesShenzhen 518055China School of pharmacy Guangdong Medical UniversityDongguan 523808China Sino-Euro center of Biomedicine and Health Shenzhen 518024China

The antitumor effects of conventional drug carriers are often attenuated and limited in application by biological barriers associated with tumor heterogeneity and resistance brought about by low tumor *** the rapid development of nanotechnology,naturally derived bioactive materials,and live cell carriers,a promising strategy emerges for targeting the tumor microenvironment(TME)for precision cancer *** unique injury-targeting properties of platelets can significantly extend functional activity,which cannot be achieved with conventional *** this review,three strategies based on platelet-engineered materials are systematically described,namely nanoparticles for platelet membrane camouflage,engineered activated platelets,and targeted-platelets ***-based nanomaterials can effectively coordinate local and distant tumor-host crosstalk with controlled active tumor site recognition and killing effects due to the presence of specific membrane proteins on the surface and the self-secretion of a large number of *** advances in platelets for effectively overcoming biological barriers and reducing immune resistance in cancer immunotherapy applications will be discussed in future clinical *** review provides an overview of recent research advances in platelet-based bioactive material-directed immunotherapy and chemotherapy to inform future antitumor combination therapies.

关键词： platelets bionic targeting immune modulation precision therapy deep penetration

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Supplying active lithium to single-crystal Li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) with Li_(2)MnO_(3) coating served as cathode for Li-ion batteries

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Particuology 2024年第12期95卷 303-318页

作者： Li Dong Xiaodong Guan Yang Zhou Shibao Tang Feng Chen School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou215009China Suzhou Huayi New Energy Technology Co. Ltd.Suzhou215433China Xingna Energy(Suzhou)Co. Ltd.Suzhou215000China Chenguang High Performance Fluorine Material Innovation center in Sichuan University of Science and Engineering Zigong643000China

Ni-rich layered oxide with Ni molar content larger than 90%was regarded as an extremely promising candidate for cathode material applied in lithium-ion batteries owing to the significant discharging capacity and low ***,rigorous cycling attenuation resulted from the crystal structure collapse and unstable particles interface deeply restrained the commercial *** the work,LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2) was modified by Ta5+doping and Li_(2)MnO_(3) covering,which was aimed to enhance the structure stability,defend the electrolyte attacking and promote Li+migration during *** material characterization demonstrated the cathodes after Ta5+doping delivered the larger cell lattice parameters and higher cation ordering,which was helpful to improve the rate property and discharge capacity at low *** Li_(2)MnO_(3) layer was tightly adhered on the outside of LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2),which could effectively relieve the electrolyte attacking and sustain the particle morphology *** a result,2 wt%Li_(2)MnO_(3) coated Li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) exhibited the outstanding discharge capacity of 150.2 mAh g^(−1) at 10.0 large current density and 140.6 mAh g^(−1) at−30℃ as well as the remarkable capacity retention of 93.1%after 300 ***,the pouch full batteries obtained by 2 wt%Li_(2)MnO_(3) coated Li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) also showed the more stable storage capability,cyclic property in comparison with bare LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2).

关键词： LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2) Li supplement Li_(2)MnO_(3)coating High chemical valence state Ta5+doping Enhanced safety and electrochemical property

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Improving the charge kinetics through in-situ growth of NiSe nanoparticles on g-C_(3)N_(4)nanosheets for efficient hybrid supercapacitors

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Journal of Energy Chemistry 2023年第12期87卷 304-313,I0008页

作者： Somnath R.Khaladkar Oshnik Maurya Girish Gund Bhavesh Sinha Deepak Dubal R.R.Deshmukh Archana Kalekar Department of Physics Institute of Chemical Technology(ICT)MatungaMumbai 400019MaharashtraIndia Department of Physics Mahatma Phule ArtsScience and Commerce CollegePanvel 410206MaharashtraIndia National center for Nanoscience and Nanotechnology University of MumbaiMumbai 400032MaharashtraIndia Centre for Materials Science School of Chemistry and PhysicsQueensland University of TechnologyBrisbane QLD 4000Australia

Nickel selenide(NiSe)has been a promising positive electrode for hybrid supercapacitors due to its multiple oxidation states,tunability,and high specific ***,sluggish ion transfers and particle agglomeration hamper its electrochemical *** the present study,we have grown NiSe nanoparticles on two-dimensional(2D)graphitic carbon nitride(g-C_(3)N_(4))nanosheets to realize three-dimensional(3D)*** 2D support,high nitrogen content,and features of g-C_(3)N_(4)enhanced the specific capacity of the NiSe/g-C_(3)N_(4)nanocomposite *** resulting nanocomposite shows a specific capacity of 320 mA h g^(-1)at a current density of 1 A g^(-1),which is considerably higher than pristine ***,the hybrid supercapacitor(HSC)device was fabricated using NiSe/g-C_(3)N_(4)composite as positive and activated carbon(AC)as negative *** cell delivered an energy density of 52.5 Wh kg^(-1)at a power density of 1488 W kg^(-1)with excellent cyclic stability of 84.9%over 8000 *** electrochemical performance enhancement corresponds to a 3D structure,high electrochemical active sites,and improved charge transportation at the electrode/electrolyte ***,the present work offers an easy approach and architectural design for high-performance HSC.

关键词： Nickel selenide Graphitic carbon nitride Nanocomposite Specific capacity Hybrid supercapacitor

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Open N-doped carbon coated porous molybdenum phosphide nanorods for synergistic catalytic hydrogen evolution reaction

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Nano research 2022年第3期15卷 1824-1830页

作者： Chao Wang Wen Li Xiaodan Wang Nan Yu Hongxia Sun Baoyou Geng College of Chemistry and Materials Science The key Laboratory of Functional Molecular SolidsMinistry of EducationThe Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu 241002China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

Molybdenum phosphide is a potential hydrogen evolution reaction(HER)***,traditional high-temperature phosphating preparation methods are prone to damage of material morphology and *** the carbon skeleton to limit the size and morphology of MoP and to improve the conductivity of the material is an effective method to improve the performance of the ***,there is a lack of research on the effect of carbon skeleton and MoP composite structure on the catalytic mechanism of *** coated ZIF-8 on the surface of MoP nanorods,and obtained open N-doped carbon-coated porous MoP nanorods(N/C/MoP)through carbonization and *** have shown that the ZIF-8 coating effectively limits the size and morphology of the material and avoids *** alkaline conditions,N/C/MoP has a low overpotential of 169 mV for HER at 10 mA/cm2,which is 55 mV lower than MoP without a carbon *** the same time,its Tafel slope(51.3 mV/dec)is smaller than Pt/C(59.9 mV/dec),and it has good *** functional theory(DFT)studies have shown that under alkaline conditions,there is a synergistic effect between the open N-doped carbon layer and the exposed MoP active surface,which reduces the activation energy of water and improves the catalytic performance of *** is worth noting that a tight coating will hinder the exposure of active sites and reduce catalytic activity.

关键词： MoP hydrogen evolution reaction(HER) carbon composite synergistic effect

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Kinetically rate-determining step modulation by metal-support interactions for CO oxidation on Pt/CeO_(2)

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Science China Chemistry 2022年第10期65卷 2038-2044页

作者： Yanan Wang Chunlei Pei Zhi-Jian Zhao Jinlong Gong Collaborative Innovation center of Chemical Science and Engineering Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

Rational design and performance promotion are eternal topics and ultimate goals in catalyst *** contrast,trial–and–error is still the common method people ***,it is important to develop methods to intrinsically enhance the performance of *** most effective solutions are the one from a kinetic perspective based on clear knowledge of the reaction *** paper describes rate-determining step cognition and modulation to promote CO oxidation on highly dispersed Pt on CeO_(2).The different degrees of metal–support interactions due to variation of hydroxyl density of support could alter the structure of active species and the ability of oxygen activation apparently,further shift the rate-determining step from oxygen activation to oxygen reverse spillover *** transformation of rate-determining step could enhance the intrinsic activity significantly,and decrease the T_(50) approximately 140℃.The findings of this research exemplify the universal and effective method of performance elevation by rate-determining step modulation,which is promising for application in different systems.

关键词： highly dispersed Pt/CeO_(2)catalysts single atom catalysis CO oxidation performance promotion rate-determining step modulation reaction kinetics

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Porous carbon coupled with an interlaced MoP–MoS2 heterojunction hybrid for efficient hydrogen evolution reaction

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Journal of Energy Chemistry 2020年第6期29卷 45-51,I0003页

作者： Qiusheng Zhou Jianrui Feng Xinwen Peng Linxin Zhong Runcang Sun State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640GuangdongChina College of Chemistry Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)Nankai UniversityTianjin 300071China center for Lignocellulose Science and Engineering and Liaoning Key Laboratory Pulp and Paper EngineeringDalian Polytechnic UniversityDalian 116034LiaoningChina

The design and development of electrocatalysts composed of non-noble-metal catalysts with both large surface area and high electrical conductivities are crucial for the hydrogen evolution reaction(HER).Here,a xylose-based porous carbon is coupled with a MoS2-Mo P heterojunction(MoS2-Mo P/FPC)hybrid and used as a promising catalyst for *** hybrid is prepared by immobilizing petal-like MoS2 nanosheets on porous carbon(MoS2/FPC),followed by controlling the phosphidation in Ar/H2 to form MoS2-Mo P/*** phosphorus provides the P species that can induce the construction of the heterojunction under the reducing atmosphere,along with the generation of a Mo P phase and the splitting of the MoS2 *** as-prepared MoS2-Mo P/FPC catalyst offers a low overpotential of 144 mV at a current density of 10 m A cm^-2 and a small Tafel slope of 41 m V dec^-1 for the HER in acidic media,as well as remarkable *** from the active nature of the hybrid,its outstanding activity is attributed to the MoS2-Mo P heterojunction,and the good charge/mass-transfer ability of porous *** strategy provides a new method to develop and design low-cost and high-performance catalysts for the HER.

关键词： MoS2 Heterojunction Carbon Electrocatalyst

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Controlling of coordination state of Ru_(x)N_(y) clusters for efficient oxygen reduction electrocatalysis

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Nano research 2024年第3期17卷 1035-1041页

作者： Weiyang Fu Yihuan Yu Tongtong Liu Yinliang Cao Zhengping Zhang Feng Wang State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029China Beijing Advanced Innovation center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China Zhejiang Tianneng Hydrogen Energy Technology Co. Ltd.Huzhou 313100China

Ruthenium(Ru)is an attractive potential alternative to platinum as an electrocatalyst for the oxygen reduction reaction(ORR),in virtue of its high catalytic selectivity and relatively low *** this work,a series of well-dispersed nitrogen-coordinated Ru-clusters on carbon black(Ru_(x)N_(y)/C)were prepared by pyrolyzing different Ru-containing sandwich compounds as the Ru *** higher thermal stability of these complexed sandwich precursors(bis(1,2,3,4,5-pentamethylcyclopentadienyl)Ru(II)monomer,dichloro(p-cymene)Ru(II)dimer,and chloro(1,2,3,4,5-pentamethylcyclopentadienyl)Ru(II)tetramer)affords the control of coordinated state for the resulting Ru-clusters,in comparison of that derived from ruthenium *** the pyrolysis treatment,the Ru coordinated state in Ru_(x)N_(y)/C,with the Ru–N and Ru–Ru bonds,still showed the structural inheritance from the Ru(II)monomer,dimer,and tetramer,but using ruthenium chlorides as the Ru source resulted in the nanoscale Ru *** ORR testing exhibited that the Ru_(x)N_(y)/C sample derived from the Ru(II)tetramer(Ru_(x)N_(y)/C-T)presents the higher catalytic activity than the other obtained samples in either alkaline or acidic *** in the acidic electrolyte,Ru_(x)N_(y)/C-T shows the comparable ORR activity to that of Pt/C catalysts,and it shows the superior tolerance against methanol and *** X-ray absorption spectroscopy and density functional theory calculations demonstrate that these tetra-nuclear Ru-clusters could be the most active site due to their broadened d-orbital bands and lower energy d-band center than those of other subnano species and nanocrystals,and their favorable Yeager-type adsorption of O_(2)-molecules is also contributed to promoting O–O bond cleavage and accelerating the ORR process.

关键词： ruthenium clusters coordination environment sandwich compounds electrocatalysis oxygen reduction reaction

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Fast-Charging Sodium-Ion Batteries Enabled by Molecular-Level Designed Nitrogen and Phosphorus Codoped Mesoporous Soft Carbon

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research 2024年第2期2023卷 329-337页

作者： Lei Liu Zhuzhu Du Jiaqi Wang Hongfang Du Sheng Wu Mengjun Li Yixuan Zhang Jinmeng Sun Zhipeng Sun Wei Ai Frontiers Science center for Flexible Electronics(FSCFE)and Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China Fujian Cross Strait Institute of Flexible Electronics(Future Technologies) Fujian Normal UniversityFuzhou 350117China School of Materials and Energy Guangdong University of TechnologyGuangzhou510006 GuangdongChina

Soft carbons have attracted extensive interests as competitive anodes for fast-charging sodium-ion batteries(SIBs);however,the high-rate performance is still restricted by their large ion migration barriers and sluggish reaction ***,we show a molecular design approach toward the fabrication of nitrogen and phosphorus codoped mesoporous soft carbon(NPSC).The key to this strategy lies in the chemical cross-linking reaction between polyphosphoric acid and p-phenylenediamine,associated with pyrolysis induced in-situ self-activation that creates mesoporous structures and rich heteroatoms within the carbon *** to the enlarged interlayer spacing,reduced ion diffusion length,and plentiful active sites,the obtained NPSC delivers a superb rate capacity of 215 mAh g-1 at 10 A g-1 and an ultralong cycle life of 4,700 cycles at 5 A g^(-1).Remarkably,the full cell shows 99%capacity retention during 100 continuous cycles,and maximum energy and power densities of 191 Wh kg^(-1)and 9.2 kW kg^(-1),*** believe that such a synthetic protocol could pave a novel venue to develop soft carbons with unique properties for advanced SIBs.

关键词： kinetics carbons linking

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Uncovering recent progress in nanostructured light-emitters for information and communication technologies

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Light(Science & Applications) 2021年第9期10卷 1571-1587页

作者： Frédéric Grillot Jianan Duan Bozhang Dong Heming Huang LTCI Institut Polytechnique de ParisTélécom Paris19 place Marguerite Perey91120PalaiseauFrance center for High Technology Materials University of New-Mexico1313 Goddard St SEAlbuquerqueNM87106USA State Key Laboratory on Tunable Laser Technology School of Electronic and Information EngineeringHarbin Institute of TechnologyShenzhen518055China

Semiconductor nanostructures with low dimensionality like quantum dots and quantum dashes are one of the best attractive and heuristic solutions for achieving high performance photonic *** one or more spatial dimensions of the nanocrystal approach the de Broglie wavelength,nanoscale size effects create a spatial quantization of carriers leading to a complete discretization of energy levels along with additional quantum phenomena like entangled-photon generation or squeezed states of light among *** article reviews our recent findings and prospects on nanostructure based light emitters where active region is made with quantum-dot and quantum-dash *** applications ranging from silicon-based integrated technologies to quantum information systems rely on the utilization of such laser ***,we link the material and fundamental properties with the device *** this purpose,spectral linewidth,polarization anisotropy,optical nonlinearities as well as microwave,dynamic and nonlinear properties are closely *** paper focuses on photonic devices grown on native substrates(InP and GaAs)as well as those heterogeneously and epitaxially grown on silicon *** research pipelines the most exciting recent innovation developed around light emitters using nanostructures as gain media and highlights the importance of nanotechnologies on industry and society especially for shaping the future information and communication society.

关键词： emitter communication polarization

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