Premium
Manipulating Layered P2@P3 Integrated Spinel Structure Evolution for High‐Performance Sodium‐Ion Batteries
Author(s) -
Zhu YanFang,
Xiao Yao,
Hua WeiBo,
Indris Sylvio,
Dou ShiXue,
Guo YuGuo,
Chou ShuLei
Publication year - 2020
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.201915650
Subject(s) - spinel , synchrotron , cathode , materials science , battery (electricity) , ion , electrochemistry , chemistry , optics , electrode , metallurgy , power (physics) , physics , organic chemistry , quantum mechanics
Structural evolution of the cathode during cycling plays a vital role in the electrochemical performance of sodium‐ion batteries. A strategy based on engineering the crystal structure coupled with chemical substitution led to the design of the layered P2@P3 integrated spinel oxide cathode Na 0.5 Ni 0.1 Co 0.15 Mn 0.65 Mg 0.1 O 2 , which shows excellent sodium‐ion half/full battery performance. Combined analyses involving scanning transmission electron microscopy with atomic resolution as well as in situ synchrotron‐based X‐ray absorption spectra and in situ synchrotron‐based X‐ray diffraction patterns led to visualization of the inherent layered P2@P3 integrated spinel structure, charge compensation mechanism, structural evolution, and phase transition. This study provides an in‐depth understanding of the structure‐performance relationship in this structure and opens up a novel field based on manipulating structural evolution for the design of high‐performance battery cathodes.