Electrochemical assessment of highly reversible SnO2-coated Zn metal anodes prepared via atomic layer deposition for aqueous Zn-ion batteries

Authors
Gong, Sang HyukLim, Hyo JinLee, Ji HyeonYoo, YiseulYu, SeunghoLim, Hee-DaeJung, Hyun WookKo, Jesse S.Kim, In SooKim, Hyung-Seok
Issue Date
2023-02
Publisher
Elsevier BV
Citation
Applied Surface Science, v.611
Abstract
Aqueous electrochemical energy storage systems that rely on earth-abundant elements are considered as cost-effective alternatives to current lithium-ion batteries which have dominated the technological landscape. For zinc-based energy storage, dendrite growth is an underlying challenge that needs to be addressed to enact high performance and long-term stability. In the present study, we employ atomic layer deposition to produce a thin tin oxide layer that allows dendrite-free cycling for aqueous zinc-ion batteries. Tin oxide is particularly inter-esting as it provides two distinct advantages-dendrite-free cycling and mitigation of parasitic hydrogen gas evolution. The presence of the tin oxide layer leads to hydrogen gas suppression and homogeneous zinc plating/ stripping, both of which are essential to improve the performance of zinc-ion batteries. When paired in a full-cell configuration with manganese oxide, this anode delivers a high specific capacity of 273 mAh g-1 at an imposed current rate of 100 mA g-1. Through density functional theory calculations, we elucidate further that the adsorption energy of Zn for bare Zn is higher than that in the presence of a tin oxide layer.
Keywords
ZINC; PERFORMANCE; CORROSION; Aqueous zinc -ion battery; Zinc metal anode; Atomic layer deposition; Tin oxide
ISSN
0169-4332
URI
https://pubs.kist.re.kr/handle/201004/114067
DOI
10.1016/j.apsusc.2022.155633
Appears in Collections:
KIST Article > 2023
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