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

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 

机构地区：[1]School of Chemistry,Xi’an Key Laboratory of Sustainable Energy Materials Chemistry,State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China [2]State Key Laboratory for Mechanical Behaviour of Materials,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China [3]Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou,Zhejiang 313001,People’s Republic of China [4]School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 610054,People’s Republic of China [5]Faculty of Science and Technology,Bournemouth University,Talbot Campus,Fern Barrow,Poole BH125BB,UK [6]Institute for Applied Materials-Energy Storage Systems(IAM-ESS),Karlsruhe Institute of Technology(KIT),76344 Eggenstein-Leopoldshafen,Germany [7]School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an,Shaanxi 710049,People’s Republic of China [8]Laboratory of Advanced Spectroelectrochemsitry and Li-ion Batteries,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,People’s Republic of China [9]State Key Laboratory of Organic-inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,People’s Republic of China

出　　处：《Nano-Micro Letters》2022年第12期401-414,共14页纳微快报（英文版）

基　　金：This work was supported partially by the National Natural Science Foundation of China(No.51973171);China Postdoctoral Science Foundation(No.2019M663687);National Natural Science Foundation of China(No.52105587),the Foundation of State Key Laboratory of Organic-Inorganic Composites(oic-202001003);the University Joint Project-Key Projects of Shaanxi Province(No.2021GXLH-Z-042).

摘　　要：The rapid improvement in the gel polymer electrolytes(GPEs)with high ionic conductivity brought it closer to practical applications in solid-state Li-metal batteries.The combination of solvent and polymer enables quasi-liquid fast ion transport in the GPEs.However,different ion transport capacity between solvent and polymer will cause local nonuniform Li+distribution,leading to severe dendrite growth.In addition,the poor thermal stability of the solvent also limits the operating-temperature window of the electrolytes.Optimizing the ion transport environment and enhancing the thermal stability are two major challenges that hinder the application of GPEs.Here,a strategy by introducing ion-conducting arrays(ICA)is created by vertical-aligned montmorillonite into GPE.Rapid 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 process.Compared with conventional randomly dispersed fillers,ICA provides continuous interfaces to regulate the ion transport environment and enhances the tolerance of GPEs to extreme temperatures.Therefore,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 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]