@article{Jia2023, 
author = {Yanggang Jia and Shijie Chen and Xia Shao and Jie Chen and Dao-Lai Fang and Saisai Li and Aiqin Mao and Canhua Li},
title = {Synergetic effect of lattice distortion and oxygen vacancies on high-rate lithium-ion storage in high-entropy perovskite oxides},
year = {2023},
journal = {Journal of Advanced Ceramics},
volume = {12},
number = {6},
pages = {1214-1227},
keywords = {perovskite oxides, pseudocapacitance, lattice distortion, high-rate performance, high-entropy anode, oxygen vacancies (OV)},
url = {https://www.sciopen.com/article/10.26599/JAC.2023.9220751},
doi = {10.26599/JAC.2023.9220751},
abstract = {High-entropy oxides (HEOs) have gained great attention as an emerging kind of high-performance anode materials for lithium-ion batteries (LIBs) due to the entropy stabilization and multi-principal synergistic effect. Herein, the porous perovskite-type RE(Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)O3 (RE (= La, Sm, and Gd) is the abbreviation of rare earth) HEOs were successfully synthesized by a solution combustion synthesis (SCS) method. Owing to the synergistic effect of lattice distortion and oxygen vacancies (OV), the Gd(Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)O3 electrode exhibits superior high-rate lithium-ion storage performance and excellent cycling stability. A reversible capacity of 403 mAh·g–1 at a current rate of 0.2 A·g–1 after 500 cycles and a superior high-rate capacity of 394 mAh·g−1 even at 1.0 A·g–1 after 500 cycles are achieved. Meanwhile, the Gd(Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)O3 electrode also exhibits a pronounced pseudo-capacitive behavior, contributing to an additional capacity. By adjusting and balancing the lattice distortion and oxygen vacancies of the electrode materials, the lithium-ion storage performance can be further regulated.}
}