Highly durable aqueous Zn ion batteries based on a Zn anode coated by three-dimensional cross-linked and branch-liked bismuth-PVDF layer

Haiying Lu; Liyang Liu; Jiakui Zhang; Jiantie Xu

doi:10.1016/j.jcis.2022.03.010

Highly durable aqueous Zn ion batteries based on a Zn anode coated by three-dimensional cross-linked and branch-liked bismuth-PVDF layer

J Colloid Interface Sci. 2022 Jul:617:422-429. doi: 10.1016/j.jcis.2022.03.010. Epub 2022 Mar 4.

Authors

Haiying Lu¹, Liyang Liu², Jiakui Zhang¹, Jiantie Xu³

Affiliations

¹ School of Environment and Energy, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou 510640, China.
² School of Environment and Energy, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou 510640, China; Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia.
³ School of Environment and Energy, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou 510640, China. Electronic address: jiantiexu@scut.edu.cn.

PMID: 35286998
DOI: 10.1016/j.jcis.2022.03.010

Abstract

Rechargeable aqueous Zn ion batteries have been regarded as one of the most promising candidates for next-generation energy storage devices due to their low cost, non-toxicity and high safety. However, the dendrite growth of Zn anode and severe undesired side-reactions largely limited their practical application. Here, we developed a bismuth (Bi)-PVDF layer with unique 3D cross-linked and branch-liked structures as a protective layer on the Zn surface (Zn@Bi-PVDF) to suppress the formation of Zn dendrites and side-reactions, leading to the uniform plating and stripping of Zn during the cycles. Consequently, the symmetric cell with Zn@Bi-PVDF electrodes exhibits long cycling life over 2400 h at a current density of 1 mA cm^-2 with a fixed capacity of 1 mAh cm^-2. When the Zn@Bi-PVDF anode is paired with a NaV₃O₈·1.5H₂O (NVO) cathode, the fabricated Zn@Bi-PVDF//NVO cell maintains a high reversible capacity of 175.5 mAh g^-1 at 1 A g^-1 after 500 cycles with an initial capacity retention of 64.1%.

Keywords: Anode; Bismuth; Interfacial layer; PVDF; Zn ion batteries.