文献类型：期刊文献

英文题名：Self-Expanding Ion-Transport Channels on Anodes for Fast-Charging Lithium-Ion Batteries

作者：An, Juan[1];Zhang, Hongyu[3];Qi, Lu[1];Li, Guoxing[1];Li, Yuliang[1,2,4]

机构：[1]Shandong Univ, Sci Ctr Mat Creat & Energy Convers, Inst Frontier & Interdisciplinary Sci, Sch Chem & Chem Engn, Qingdao 266237, Peoples R China;[2]Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[4]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

年份：2022

卷号：61

期号：7

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20215211374172);WOS:【SCI-EXPANDED(收录号:WOS:000731983500001)】；

基金：G.L. acknowledges the support from the National Nature Science Foundation of China (52072222), the Taishan Scholar Project of Shandong Province of China (62460082061017), the Qilu Youth Scholar Funding of Shandong University (62460082063114). Y.L. acknowledges the support from the National Nature Science Foundation of China (21790050, 22021002, and 21790051), the National Key Research and Development Project of China (2018YFA0703501).

语种：英文

外文关键词：electrochemistry; fast charging; graphdiyne; ion-transport channels; lithium-ion batteries

摘要：We propose self-expanding lithium-ion transport channels to construct a fast-charging anode and realize high-performance fast-charging Li-ion batteries. The self-expanded Li-ion transport channels can be enabled by a self-reversible conversion of chemical bonds with different bond lengths in the anode driven by the interactions with Li ions during cycling, reduce the energy barrier of Li-ion transport and allow a fast Li-ion solid-state diffusion, whereby the severe voltage polarization and Li metal plating are effectively eliminated. Our proof-of-concept demonstration of the self-reversible conversion of chemical bonds on the surface of graphdiyne successfully verifies the self-expanded Li-ion transport channels, self-accelerated Li in-plane/out-of-plane migration, and superior fast-charging capability with a high capacity (342 mA h g(-1)) and an ultra-long lifespan (22 000 cycles) under extremely fast-charging conditions (6 C rate, 1 C=744 mA g(-1)), even at low temperatures (-10 degrees C).