期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 24, 页码 27249-27257出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c06009
关键词
2D nanosheets; MoS2 coating; Zn anode stabilization; alpha-MnO2; Zn-ion battery
资金
- UNT AMMPI/KITECH SEED Project
- Ark Power Tech Co. Gift fund
- NRF Joint Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2018K2A9A1A06073905]
Recently, aqueous Zn-ion rechargeable batteries have drawn increasing research attention as an alternative energy storage system relative to the current Li-ion batteries due to their intrinsic properties of high safety, low cost, and high theoretical volumetric capacity. Nevertheless, unwanted dendrite growth on the Zn anode and unstable cathode materials restrict their practical application. In this study, a unique 2D MoS2 coating on a Zn anode using an electrochemical deposition method has been developed for preventing dendrite growth and intricate side reactions. The coated MoS2 layer is a vertically oriented structure that makes the flow of Zn ions easy with a uniform electric field distribution on the anode, resulting in a uniform stripping and plating of Zn2+. In addition, the MoS2 coating enhances anodic diffusion of Zn ions and reduces the series resistance as confirmed by EIS analysis and therefore improves the overall battery performance. The full cell assembled with the MoS2-Zn anode and MnO2 cathode exhibits an excellent reversible specific capacity of 638 mAh/g at 0.1 A/g and stable cycle performance over 2000 cycles with no dendrite formation at the Zn electrode. The presented MoS2 coating on Zn is a facile, scalable, and promising technology for practical Zn-ion batteries with a long life cycle and high safety.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据