Nonionic Surfactant-Assisted in Situ Generation of Stable Passivation Protective Layer for Highly Stable Aqueous Zn Metal Anodes
Publication Name
Nano Letters
Abstract
A highly stable interface for aqueous rechargeable Zn batteries is of importance to inhibit the growth of Zn dendrites and suppress the side reactions. In this work, we have developed a stable honeycomb-like ZnO passivation protective layer on the Zn surface, which is in situ generated with the assistance of a nonionic surfactant additive (polyethylene glycol tert-octylphenyl ether, denoted as PEGTE). The ZnO passivation layer can facilitate the uniform distribution of the electric field, guiding the uniform deposition of Zn2+and inhibit the generation of dendrites. As a result, the symmetric cell using the electrolyte with PEGTE shows an excellent performance at high areal capacity, reflected by stable cycling for over 2400 h at 5 mAh/cm2and 1300 h at 10 mAh/cm2. The full cell paired with V2O5demonstrates a long lifespan for more than 600 cycles at a low negative/positive capacity ratio.
Open Access Status
This publication is not available as open access
Volume
22
Issue
21
First Page
8574
Last Page
8583
Funding Number
11875185
Funding Sponsor
National Natural Science Foundation of China