Premium
Molecularly Compensated Pre‐Metallation Strategy for Metal‐Ion Batteries and Capacitors
Author(s) -
Zou Kangyu,
Song Zirui,
Gao Xu,
Liu Huanqing,
Luo Zheng,
Chen Jun,
Deng Xinglan,
Chen Libao,
Zou Guoqiang,
Hou Hongshuai,
Ji Xiaobo
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202103569
Subject(s) - electrochemistry , moiety , substituent , chemistry , battery (electricity) , electrolysis , dimethoxyethane , lithium (medication) , carboxylate , cathode , ion , metal , sodium , inorganic chemistry , combinatorial chemistry , electrode , organic chemistry , electrolyte , medicine , power (physics) , physics , quantum mechanics , endocrinology
The use of a sacrificial cathode additive as a pre‐metallation method could ensure adequate metal sources for advanced energy storage devices. However, this pre‐metallation technique suffers from the precise regulation of decomposition potential of additive. Herein, a molecularly compensated pre‐metallation (Li/Na/K) strategy has been achieved through Kolbe electrolysis, in which the electrochemical oxidation potential of a metal carboxylate is manipulated by the bonding energy of the oxygen–metal (O–M) moiety. The electron‐donating effect of the substituent and the low charge density of the cation can dramatically weaken the O–M bond strength, further bringing out the reduced potential. Thus, sodium acetate exhibits a superior pre‐sodiation feature for sodium‐ion battery accompanied with a large irreversible specific capacity of 301.8 mAh g −1 , remarkably delivering 70.6 % enhanced capacity retention in comparison to the additive‐free system after 100 cycles. This methodology has been extended to construct a high‐performance lithium‐ion battery and a lithium/sodium/potassium‐ion capacitor.