A facile coprecipitation approach for synthesizing LaNi0.5Co0.5O3 as the cathode for a molten-salt lithium–oxygen battery

Qianyuan Qiu, Jiaqi Wang, Penghui Yao, Yongdan Li*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The cathode of a lithium–oxygen battery (LOB) should be well designed to deliver high catalytic activity and long stability, and to provide sufficient space for accommodating the discharge product. Herein, a facile coprecipitation approach is employed to synthesize LaNi0.5Co0.5O3 (LNCO) perovskite oxide with a low annealing temperature. The assembled LOB exhibits superior electrochemical performance with a low charge overpotential of 0.03–0.05 V in the current density range of 0.1–0.5 mA cm−2. The battery ran stably for 119 cycles at a high coulombic efficiency. The superior performance is ascribed to (i) the high catalytic activity of LNCO towards oxygen reduction/evolution reactions; (ii) the increased temperature enabling fast kinetics; and (iii) the LiNO3–KNO3 molten salt enhancing the stability of the LOB operating at high temperature.
Original languageEnglish
Number of pages14
JournalFaraday Discussions
DOIs
Publication statusE-pub ahead of print - 19 Jun 2023
MoE publication typeA1 Journal article-refereed

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