TY  - JOUR
AU  - Liu, Zenghua
AU  - Ren, Junfeng
AU  - Wang, Fanghui
AU  - Liu, Xiaobin
AU  - Zhang, Qian
AU  - Liu, Jie
AU  - Kaghazchi, Payam
AU  - Ma, Dingxuan
AU  - Chi, Zhenzhen
AU  - Wang, Lei
TI  - Tuning Surface Energy of Zn Anodes via Sn Heteroatom Doping Enabled by a Codeposition for Ultralong Life Span Dendrite-Free Aqueous Zn-Ion Batteries
JO  - ACS applied materials & interfaces
VL  - 13
IS  - 23
SN  - 1944-8244
CY  - Washington, DC
PB  - Soc.
M1  - FZJ-2021-05564
SP  - 27085 - 27095
PY  - 2021
AB  - Aqueous Zn-ion batteries (AZBs) have been considered as one of the most promising large-scale energy storage systems, owing to the advantages of raw material abundance, low cost, and eco-friendliness. However, the severe growth of Zn dendrites leads to poor stability and low Coulombic efficiency of AZBs. Herein, to effectively inhibit the growth of Zn dendrites, a new strategy has been proposed, i.e., tuning the surface energy of the Zn anode. This strategy can be achieved by in situ doping of Sn heteroatoms in the lattice of metallic Zn via codeposition of Sn and Zn with a small amount of the SnCl2 electrolyte additive. Density functional theory calculations have suggested that Sn heteroatom doping can sharply decrease the surface free energy of the Zn anode. As a consequence, driven by the locally strong electric field, metallic Sn tends to deposit at the tips of the Zn anode, thus decreases the surface energy and growth of Zn at the tips, resulting in a dendrite-free Zn anode. The positive effect of the SnCl2 additive has been demonstrated in both the Zn∥Zn symmetric battery and the Zn/LFP and Zn/HATN full cell. This novel strategy can light a new way to suppress Zn dendrites for long life span Zn-ion batteries.
LB  - PUB:(DE-HGF)16
C6  - 34080420
UR  - <Go to ISI:>//WOS:000664289800041
DO  - DOI:10.1021/acsami.1c06002
UR  - https://juser.fz-juelich.de/record/903994
ER  -