文献类型：期刊文献

英文题名：Robust Artificial Solid-Electrolyte Interfaces with Biomimetic Ionic Channels for Dendrite-Free Li Metal Anodes

作者：Jiang, Guangyu[1];Li, Kaiyuan[1];Yu, Feng[2];Li, Xianglong[1];Mao, Jiayi[1];Jiang, Weiwei[3];Sun, Fugen[3];Dai, Bin[2];Li, Yongsheng[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Lab Low Dimens Mat Chem, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn, Shihezi 832003, Peoples R China;[3]Nanchang Univ, Inst Photovolta, Nanchang 330031, Jiangxi, Peoples R China

年份：2021

卷号：11

期号：6

外文期刊名：ADVANCED ENERGY MATERIALS

收录：;EI(收录号：20210109709991);WOS:【SCI-EXPANDED(收录号:WOS:000603656800001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51962022 and 51672083), Basic Research Program of Shanghai (Grant No. 17JC1404702), Program of Shanghai Academic/Technology Research Leader (Grant No. 18XD1401400), 111 Project (Grant No. B14018), Basic research projects of free exploration funded by the China government (Grant No. 20202ZDB01008), and the Fundamental Research Funds for Central Universities (Grant No. 222201718002).

语种：英文

外文关键词：biomimetic ionic channels; Li metal batteries; metal‐ organic frameworks; solid electrolyte interface

摘要：A robust artificial solid electrolyte interphase (SEI) film with biomimetic ionic channels and high stability is rationally designed and fabricated by combining the ClO4--decorated metal-organic framework (UiO-66-ClO4) and flexible lithiated Nafion binder (Li-Nafion). The high electronegativity and lithiophilicity of ClO4- groups chemically anchored into the UiO-66 channels endow the SEI film with an excellent single-ion conducting pathway, high Li+ transference number, and outstanding ionic conductivity, which can effectively prohibit undesirable reactions of the Li metal with the electrolyte and regulate fast and uniform Li+ flux. With further assistance of the flexible Li-Nafion binder, the resulting UiO-66-ClO4/Li-Nafion (UCLN) composite film exhibits an excellent mechanical strength to suppress the growth of Li dendrites and maintain the integral stability of the Li metal anodes during cycling. Consequently, the UCLN coated Li metal anodes (Li@UCLN) deliver remarkable cycling stabilities even under a high current density of up to 20 mA cm(-2) and large areal capacity of up to 30 mAh cm(-2), as well as enhanced rate capacities and cycle lifespans in the full cells even under the harsh conditions for high-energy density applications.