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In situ formed LiF-Li_(3)N interface layer enables ultra-stable sulfide electrolyte-based all-solid-state lithium batteries

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Journal of Energy Chemistry 2023年第4期79卷 272-278页

作者： Ming Wu Mengqi Li Yuming Jin xinshuang chang Xiaolei Zhao Zhi Gu Gaozhan Liu Xiayin Yao School of Material Science and Chemical Engineering Ningbo UniversityNingbo 315211ZhejiangChina Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201ZhejiangChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Sulfide solid electrolytes are promising for high energy density and safety in all-solid-state batteries due to their high ionic conductivity and good mechanical ***,the application of sulfide solid electrolytes in all-solid-state batteries with lithium anode is restricted by the side reactions at lithium/electrolytes interfaces and the growth of lithium dendrite caused by nonuniform lithium ***,a homogeneous LiF-Li_(3)N composite protective layer is in situ formed via a manipulated reaction of pentafluorobenzamide with Li *** LiF-Li_(3)N layer with both high interfacial energy and interfacial adhesion energy can synergistically suppress side reactions and inhibit the growth of lithium dendrite,achieving uniform deposition of *** critical current densities of Li_(10)GeP_(2)S_(12)and Li_(6)PS_(5)Cl are increased to 3.25 and 1.25 mA cm^(-2)with Li@LiF-Li_(3)N layer,which are almost triple and twice as those of Li-symmetric cells in the absence of protection layer,***,the Li@LiF-Li_(3)N/Li10GeP2S12/Li@LiF-Li_(3)N cell can stably cycle for 9000 h at 0.1 mA cm^(-2)under 0.1 mA h cm^(-2),and Li@LiF-Li_(3)N/Li_(6)PS_(5)Cl/Li@LiF-Li_(3)N cell achieves stable Li plating/stripping for 8000 h at 0.1 mA cm^(-2)under10 m A h cm^(-2).The improved dynamic stability of lithium plating/stripping in Li@LiF-Li_(3)N/Li_(10)GeP_(2)S_(12)or Li_(6)PS_(5)Cl interfaces is proved by three-electrode *** a result,LiCoO_(2)/electrolytes/Li@LiF-Li_(3)N batteries with Li_(10)GeP_(2)S_(12)and Li_(6)PS_(5)Cl exhibit remarkable cycling stability of 500 cycles with capacity retentions of 93.5%and 89.2%at 1 C,respectively.

关键词： LiF-Li_(3)N Sulfide solid electrolytes Interface modification High interface energy All-solid-state batteries

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Air exposure towards stable Li/Li_(10)GeP_(2)S_(12) interface for all-solid-state lithium batteries

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Materials Futures 2022年第2期1卷 1-8页

作者： Wei Weng Dong Zhou Gaozhan Liu Lin Shen Mengqi Li xinshuang chang Xiayin Yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China

Moist air is a great challenge for manufacturing sulfide-based all-solid-state lithium batteries as the water in air will lead to severe decomposition of sulfide electrolytes and release H2S ***,different with direct reaction with water,short-period air exposure of Li_(10)GeP_(2)S_(12) sulfide electrolyte with controlled humidity can greatly enhance the stability of Li_(10)GeP_(2)S_(12) against lithium metal,thus realizing stable Li_(10)GeP_(2)S_(12) based all-solid-state lithium metal *** air exposure,partial hydrolysis reaction occurs on the surface of Li_(10)GeP_(2)S_(12) pellets,rapidly generating a protective decomposition layer of Li4P2S6,GeS2 and Li2HPO3 in dozens of *** ionically conductive but electronically insulation protecting layer can effectively prevent the severe interface reaction between Li_(10)GeP_(2)S_(12) and lithium metal during electrochemical *** Li/40s-air-exposed Li_(10)GeP_(2)S_(12)/Li cell shows long cycling stability for 1000 *** the LiCoO_(2)/40s-air-exposed Li_(10)GeP_(2)S_(12)/Li batteries present good rate capability and long cyclic performances,showing capacity retention of 80%after 100 cycles.

关键词： Li_(10)GeP_(2)S_(12) lithium metal interface stability air-exposure treatment all-solid-state lithium batteries

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Co-guiding the dendrite-free plating of lithium on lithiophilic ZnO and fluoride modified 3D porous copper for stable Li metal anode

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Journal of Materiomics 2020年第1期6卷 54-61页

作者： xinshuang chang Hang Liu Hang Yang Jie Di Wenhao Tang Huadong Fu Mingyang Li Ruiping Liu Department of Materials Science and Engineering China University of Mining&Technology(Beijing)Beijing100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing100083China

Lithium metal battery is considered to be the most promising energy storage technologies due to its ultra-high theoretical capacity and extremely low standard ***,the infinite volume change during uneven deposition/dissolution process and the growth of lithium dendrite resulting in severe capacity decay and high safety hazards,which hinders the application in next generation secondary *** this paper,the three dimensional(3D)porous copper is prepared through an electrochemical etching CueZn alloy,and the pore walls are modified with lithiophilic layer of ZnO and *** as-prepared 3D Cu/ZnO/F can inhibit the growth of Li dendrite and mitigate the huge volume change of Li metal anode during cycling process,resulting in stable solid electrolyte interface(SEI)layer and electrode *** Li|3D Cu/ZnO/F cell can be stably cycled over 300 cycles with 98% of coulomb efficiency at 0.5 mA cm^(-2),1 mAh cm^(-2).The synergistic effects of both ZnO and fluorine on inducing the uniform deposition of lithium by providing bonding sites can inhibit the generation of lithium dendrites and thus improve the electrochemical performance of lithium metal batteries.

关键词： Lithium metal battery 3D copper Lithium dendrites Modification

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A self-standing,UV-cured semi-interpenetrating polymer network reinforced composite gel electrolytes for dendrite-suppressing lithium ion batteries

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Journal of Materiomics 2019年第2期5卷 185-194页

作者： Ruiping Liu Zirui Wu Peng He Haoyu Fan Zeya Huang Lei Zhang xinshuang chang Hang Liu chang-an Wang Yutao Li Department of Materials Science and Engineering China University of Mining&Technology(Beijing)Beijing 100083China School of Materials Science and Engineering State Key Laboratory of New Ceramics and Fine ProcessingTsinghua UniversityBeijing 100084China Department of Mechanical Engineering University of Alaska FairbanksFairbanksAK 99775United States Materials Science and Engineering Program and Texas Materials Institute The University of Texas at AustinTexas78712United States

A self-standing,flexible and lithium dendrite growth-suppressing composite gel polymer electrolyte membrane was designed for the use of room-temperature lithium ion *** multi-functional composite semi-interpenetrating polymer network(referred to as“Cs-IPN”)electrolyte membrane was fabricated by combining a UV-cured ethoxylated trimethylolpropane triacrylate(ETPTA)macromer with alumina nanoparticles in the presence of liquid electrolyte and thermoplastic linear poly(ethylene oxide)(PEO).The polymer electrolyte membrane exhibits a semi-interpenetrating polymer network structure and a higher room temperature ionic conductivity,which impart the electrolyte with a significant cycling(120 mAh g^(-1)after 200 cycles)and a remarkable rate(137 mAh g^(-1)at 0.1℃,130 mAh g^(-1)at 0.5℃,119 mAh g^(-1)at 1℃ and 100 mAh g^(-1)at 2℃)performance in Li/LiFePO4 *** importantly,the polymer electrolyte possesses superior ability to inhibit the growth of lithium dendrites,which makes it promising for next generation lithium ion batteries.

关键词： Gel polymer electrolytes Semi-interpenetrating polymer network UV-Cured reaction Ionic conductivity Lithium ion batteries

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A Novel "Birds-Nest" Structured Co3O4/ACNTs as host materials for High-Performance Lithium-Sulfur Batteries

A Novel "Birds-Nest" Structured Co3O4/ACNTs as host material...

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中国化学会第三届中国能源材料化学研讨会

作者： Fei Guo Jinlin Yang Xiaofan Zhang xinshuang chang Hang Liu Ruiping Liu Department of Materials Science and Engineering China University of Mining & Technology(Beijing)

Lithium-sulfur battery is regarded as the most promising next generation of new battery system due to its high theoretical specific capacity and energy ***,the fast capacity fading and low columbic efficiency limit its practical ***,we report a novel CoO/ACNTs hosting materials with stable "birds nest" structure,which integrates the metal oxide with the conductive framework *** shuttle effect of LiPSs can be largely reduced by the double barrier of the newly synthesized hosting materials,at the same time,the electric conductivity of the cathode materials can be *** obtained CoO/S/ACNTs exhibits an initial discharge capacity as high as 1285 m Ah/g at 0.1 *** particular,the discharge capacity of CoO/S/ACNTs is 693.7 m Ah g after 550 cycles at 0.5 C,deliver an excellent cycling stability with only a 0.056% capacity decay per *** cross-linked "bird nest" structure can not only encapsulate polysulfide effectively,but also the catalytic properties of CoO can better promote the transformation and utilization of *** work provides us a new way to architecture a novel structure to accommodate and convert polysulfide.

关键词： lithium–sulfur batteries Co3O4 MWCNTs birds nest polysulfide intermediates

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