High-Rate and Ultra-Stable aqueous Zinc-Ion batteries enabled by Potassium-Infused ammonium vanadate nanosheets

Jin Cao; Tianzhuo Ou; Yongxin Sun; Haiyang Wu; Ding Luo; Chengwu Yang; Lulu Zhang; Dongdong Zhang; Xinyu Zhang; Jiaqian Qin; Xuelin Yang

doi:10.1016/j.jcis.2024.03.116

High-Rate and Ultra-Stable aqueous Zinc-Ion batteries enabled by Potassium-Infused ammonium vanadate nanosheets

J Colloid Interface Sci. 2024 Jul:665:32-40. doi: 10.1016/j.jcis.2024.03.116. Epub 2024 Mar 18.

Authors

Jin Cao¹, Tianzhuo Ou², Yongxin Sun², Haiyang Wu², Ding Luo², Chengwu Yang³, Lulu Zhang², Dongdong Zhang³, Xinyu Zhang⁴, Jiaqian Qin⁵, Xuelin Yang⁶

Affiliations

¹ College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, China; Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China. Electronic address: caojin@ctgu.edu.cn.
² Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China.
³ Center of Excellence on Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand; School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.
⁴ State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
⁵ Center of Excellence on Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand; School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China. Electronic address: jiaqian.q@chula.ac.th.
⁶ Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China. Electronic address: xlyang@ctgu.edu.cn.

PMID: 38513406
DOI: 10.1016/j.jcis.2024.03.116

Abstract

Aqueous zinc-ion batteries (AZIBs), defined by low expenses, superior safety, and plentiful reserves, demonstrate tremendous development potential in energy storage systems at the grid scale. Whereas the cathode instability and the limited diffusion of Zn²⁺ have impeded the development of AZIBs. Herein, a high-performance K-NH₄V₄O₁₀ (K-NVO) cathode with K⁺ doping synthesized successfully through one-step hydrothermal approach. Experiments and density functional theory (DFT) calculations indicate that K-NVO has Zn²⁺ diffusion pathways with lower barriers for smoother transport, and lower formation energy. The combination of the rapid Zn²⁺ diffusion and the stable structure results in outstanding electrochemical performance of K-NVO as demonstrated in tests. K-NVO cathode achieves a specific capacity of 406 mAh g^-1 at 0.2 A g^-1, maintains satisfactory cyclic stability with 81.6 % capacity retention after 1000 cycles at 5 A g^-1, and possesses a high energy density of 350.9 Wh kg^-1. Furthermore, confirmation of the zinc storage mechanism in K-NVO was carried out through Ex situ tests, such as XRD and XPS. This research contributes a unique perspective to the formulation of high-performance cathode materials for AZIBs.

Keywords: Aqueous zinc-ion batteries; Cathode; Diffusion; K-NH(4)V(4)O(10); Stability.