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MXene Aerogel Scaffolds for High‐Rate Lithium Metal Anodes
Author(s) -
Zhang Xinyue,
Lv Ruijing,
Wang Aoxuan,
Guo Wenqing,
Liu Xingjiang,
Luo Jiayan
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808714
Subject(s) - anode , materials science , overpotential , aerogel , cathode , nucleation , chemical engineering , graphene , lithium (medication) , current density , metal , lithium metal , plating (geology) , nanotechnology , electrochemistry , chemistry , metallurgy , electrode , medicine , physics , organic chemistry , quantum mechanics , endocrinology , geophysics , geology , engineering
Li metal is considered to be an ultimate anode for metal batteries owing to its extremely high theoretical capacity and lowest potential. However, numerous issues such as short lifespan and infinite volume expansion caused by the dendrite growth during Li plating/stripping hinder its practical usage. These challenges become more grievous under high current densities. Herein, 3D porous MXene aerogels are proposed as scaffolds for high‐rate Li metal anodes using Ti 3 C 2 as an example. With high metallic electron conductivity, fast Li ion transport capability, and abundant Li nucleation sites, such scaffolds could deliver high cycling stability and low overpotential at current density up to 10 mA cm −2 . High rate performance is also demonstrated in full cells with LiFePO 4 as cathodes. This work provides a new type of scaffolds for Li metal anodes and paves the way for the application of non‐graphene 2D materials toward high energy density Li metal batteries.