Charge-tuning mediated rapid kinetics of zinc ions in aqueous Zn-ion battery

Xiao，Yawei1; Ren，Jie1; Li，Mengyao1; Xiao，Kai2; Wang，Yude3

2023-10-15

10.1016/j.cej.2023.145801

Chemical Engineering Journal   Impact Factor & Quartile

1385-8947

1873-3212

Vanadium oxides are considered to be one of the most promising cathode materials for rechargeable aqueous zinc-ion batteries. However, the sluggish kinetics of zinc-ion intercalation and unstable layered structure limit its further development. Herein, we use the interlayer charge-tuning strategy to fabricate a KBaVO·2.2HO nanowire by Ba and K dual pre-intercalation. The dual ions intercalated cathode enables a discharge capacity of up to 563 mAh g at 0.1 A g and retains 98.5% capacity after 10,000 cycles at 5 A g. Experiments and theoretical calculations jointly reveal that charge-tuning reduces the electrostatic repulsion between zinc-ions and the host matrix, which realizes the rapid diffusion kinetics of zinc-ions and restrains the cathode dissolution effectively. Benefiting from its excellent flexibility and weather resistance, KBaVO·2.2HO nanowire-based Zn-ion battery also shows robust application in wearable electronic devices. The charge-tuning strategy provides new ideas to the design of high-performance cathode materials for aqueous Zn-ion batteries.

Aqueous zinc-ion battery Charge-tuning Flexible electronics Ultra-stable structure Vanadium-based cathode

SCI

English

Corresponding

National Natural Science Foundation of China["61761047","41876055"] ; Yunnan University's Research Innovation Fund for Graduate Students[KC-22222464]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:001087367300001

ELSEVIER SCIENCE SA

ENGINEERING

2-s2.0-85169892145

Scopus

1.National Center for International Research on Photoelectric and Energy Materials,School of Materials and Energy,Yunnan University,Kunming,6500504,China
2.Department of Biomedical Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies,Yunnan University,Kunming,6500504,China

Xiao，Yawei,Ren，Jie,Li，Mengyao,et al. Charge-tuning mediated rapid kinetics of zinc ions in aqueous Zn-ion battery[J]. Chemical Engineering Journal,2023,474.

Xiao，Yawei,Ren，Jie,Li，Mengyao,Xiao，Kai,&Wang，Yude.(2023).Charge-tuning mediated rapid kinetics of zinc ions in aqueous Zn-ion battery.Chemical Engineering Journal,474.

Xiao，Yawei,et al."Charge-tuning mediated rapid kinetics of zinc ions in aqueous Zn-ion battery".Chemical Engineering Journal 474(2023).