Anionic redox reaction-induced high-capacity and low-strain cathode with suppressed phase transition
RONG, Xiaohui
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
LU, Yaxiang
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
See more >
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
RONG, Xiaohui
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
LU, Yaxiang
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
MENG, Fanqi
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
ZHAO, Chenglong
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
WANG, Xuelong
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Chemistry Division
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Chemistry Division
ZHANG, Qinghua
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
YU, Xiqian
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
HU, Yong-Sheng
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
Yangtze River Delta Physics Research Center Co. Ltd
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Center of Materials Science and Optoelectronics Engineering
Yangtze River Delta Physics Research Center Co. Ltd
LI, Hong
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Yangtze River Delta Physics Research Center Co. Ltd
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Yangtze River Delta Physics Research Center Co. Ltd
HUANG, Xuejie
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
LI, Liquan
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
< Reduce
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics [IoP/CAS]
Language
en
Article de revue
This item was published in
Joule. 2019, vol. 3, n° 2, p. 503-517
Elsevier
English Abstract
Layered metal oxides have attracted widespread attention as cathodes for Na-ion batteries (NIBs) because of easy synthesis, high specific capacity, and high energy density. However, most reported layered oxides suffer from ...Read more >
Layered metal oxides have attracted widespread attention as cathodes for Na-ion batteries (NIBs) because of easy synthesis, high specific capacity, and high energy density. However, most reported layered oxides suffer from complex phase transitions upon a large amount of Na deintercalation. Here we report a P2-type Na 0.72[Li 0.24Mn 0.76]O 2, exhibiting exceptionally high initial charge capacity of ∼210 mAh/g (0.72 Na) based on a pure anionic redox reaction (ARR). Surprisingly, global P2 structure can be maintained with minimal volume change (1.35%) upon complete removal of Na + ions. This is due to the reduced Coulombic repulsion associated with ARR and consequent suppression of the phase transition as observed in other P2 materials. Here we reveal for the first time that ARR has the functionality of stabilizing the structure, in addition to its role in increasing its already known capacity. This would pave the way for the further improvement of high-energy-density NIBs.Read less <
English Keywords
Layered oxide
Na-ion battery
Cathode
High capacity
Low-strain
Anionic redox reaction
Origin
Hal imported