埃洛石
阳极
涂层
材料科学
腐蚀
水溶液
化学工程
电偶阳极
锌
电极
冶金
无机化学
纳米技术
复合材料
阴极保护
化学
有机化学
物理化学
工程类
作者
Peijie Xu,Chun‐Yuan Wang,Bingxin Zhao,Yi Zhou,Hongfei Cheng
标识
DOI:10.1016/j.jcis.2021.06.057
摘要
Aqueous zinc-ion batteries are recognized as one of the most potential neutral aqueous batteries because of the high energy density, high specific capacity, low cost, and low pollution. However, the applications of zinc-ion batteries are seriously limited by the capacity fading, easy-corrosion, side reaction, and hydrogen evolution. Herein, we report a uniform halloysite nanotubes (HNTs) coating which can guide Zn2+ ions stripping/plating on the HNTs/Zn interfaces and protect the Zn anode. The HNTs coating significantly suppresses the corrosion of Zn anode and effectively reduces the hydrogen evolution and the formation of by-product. Furthermore, the HNTs-Zn anode exhibits lower resistance than bare Zn. Compared with the bare Zn anode batteries, HNTs-Zn/MnO2 batteries exhibit good capacity retention and can increase the discharge capacity to 79% at 3 C after 400 cycles. The novel design of interfacial coating based on halloysite nanotubes through electrophoretic deposition method provides a new way to fabricate economic and stable aqueous zinc-ion batteries.
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