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Quasi-Solid-State ion-Conducting Arrays Composite Electrolytes with Fast ion Transport Vertical-Aligned Interfaces for All-Weather Practical Lithium-Metal Batteries

引用

Nano-Micro Letters 2022年第12期14卷 401-414页

作者： Xinyang Li Yong Wang Kai Xi Wei Yu Jie Feng Guoxin Gao Hu Wu Qiu Jiang Amr Abdelkader Weibo Hua Guiming Zhong Shujiang Ding School of Chemistry Xi’an Key Laboratory of Sustainable Energy Materials ChemistryState Key Laboratory of Electrical Insulation and Power EquipmentXi’an Jiaotong UniversityXi’an 710049People’s Republic of China State Key Laboratory for Mechanical Behaviour of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhouZhejiang 313001People’s Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China Faculty of Science and Technology Bournemouth UniversityTalbot CampusFern BarrowPoole BH125BBUK Institute for Applied Materials-Energy Storage Systems(IAM-ESS) Karlsruhe Institute of Technology(KIT)76344 Eggenstein-LeopoldshafenGermany School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’anShaanxi 710049People’s Republic of China Laboratory of Advanced Spectroelectrochemsitry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023People’s Republic of China State Key Laboratory of Organic-inorganic Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China

The rapid improvement in the gel polymer electrolytes(GPEs)with high ionic conductivity brought it closer to practical applications in solid-state Li-metal *** combination of solvent and polymer enables quasi-liquid fast ion transport in the ***,different ion transport capacity between solvent and polymer will cause local nonuniform Li+distribution,leading to severe dendrite *** addition,the poor thermal stability of the solvent also limits the operating-temperature window of the *** the ion transport environment and enhancing the thermal stability are two major challenges that hinder the application of ***,a strategy by introducing ion-conducting arrays(ICA)is created by vertical-aligned montmorillonite into *** ion transport on the ICA was demonstrated by 6Li solid-state nuclear magnetic resonance and synchrotron X-ray diffraction,combined with computer simulations to visualize the transport *** with conventional randomly dispersed fillers,ICA provides continuous interfaces to regulate the ion transport environment and enhances the tolerance of GPEs to extreme ***,GPE/ICA exhibits high room-temperature ionic conductivity(1.08 mS cm^(−1))and long-term stable Li deposition/stripping cycles(>1000 h).As a final proof,Li||GPE/ICA||LiFePO_(4) cells exhibit excellent cycle performance at wide temperature range(from 0 to 60°C),which shows a promising path toward all-weather practical solid-state batteries.

关键词： Solid-state batteries Composite electrolytes Vertical-aligned ion-conducting arrays interfacial ion-conduction mechanism All-weather practical electrolyte design

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