A novel approach to LiVO3 synthesis enables its outstanding lithium storage performance

作者：Yang, Dizi; Zhang, Dongmei^*; Wu, Haihua^*; Xiao, Ting; Ni, Shibing^*

来源：IONICS, 2022, 28(8): 3671-3678.

DOI：10.1007/s11581-022-04637-w

• LiVO3
• Reaction kinetics
• Lithium-ion batteries
• Anode

Li3VO4 has been proven to have great potential as an alternative anode for lithium-ion batteries (LIBs), while the high cost of lithium resources and limited reserves inhibit its radiance. LiVO3 with fewer lithium atoms has been widely studied as a cathode for LIBs. The lithium storage mechanism and synthesis method of the LiVO3 anode are still in the preliminary stage. Herein, LiVO3-N-2 was prepared through hydrothermal method and subsequent annealing in nitrogen atmosphere for the first time. As an anode, the LiVO3-N-2 presents high capacity of 715 mAh g(-1) after 300 cycles at 0.2 A g(-1), and long cycling life of 120 mAh g(-1) after 3000 cycles at 5.0 A g(-1), outperforming all reported LiVO3-based anode materials. Even after 6-period rate property testing from 0.2 to 2.0 A g(-1) over 310 cycles, the LiVO3-N-2 electrode still resumes high capacity of 520 mAh g(-1) when the current returns to 0.2 A g(-1). Such excellent electrochemical performances are attributed to the high and gradually increasing pseudocapacitive contribution storage upon cycling originated from self-adaptive reaction kinetics. The novel approach to LiVO3 synthesis and the remarkable lithium storage performance of the LiVO3-N-2 provide impetus for further development of LiVO3 anode.