TY  - JOUR
AU  - Tao, Feng
AU  - Feng, Kaijia
AU  - Liu, Yong
AU  - Ren, Jiangzhuo
AU  - Xiong, Yi
AU  - Li, Chengbo
AU  - Ren, Fengzhang
PY  - 2023
TI  - Suppressing interfacial side reactions of zinc metal anode via isolation effect toward high-performance aqueous zinc-ion batteries
JO  - Nano Research
SN  - 1998-0124
SP  - 6789
EP  - 6797
VL  - 16
IS  - 5
AB  - Aqueous zinc (Zn)-ion batteries (AZIBs) are one of the most promising large-scale energy storage devices because of the excellent features of zinc metal anodes, including high theoretical capacity (5,855 mAh·cm–3 and 820 mAh·g−1), high safety, and natural abundance. Nevertheless, the large-scale applications of AZIBs are mainly limited by the severe interfacial side reactions of zinc metal anodes, which results in low plating/stripping Coulombic efficiency and poor cycling stability. To address this issue, we report an artificial Ta2O5 protective layer on zinc foil (Ta2O5@Zn) for suppressing side reactions during Zn deposition/stripping. The results of density functional theory calculation and experiments indicate that Ta2O5@Zn anode can inhibit the side reactions between the electrolyte and zinc anode through the isolation effect. Benefiting from this advantage, the symmetric cells with Ta2O5@Zn anode delivered an ultralong lifespan of 3,000 h with a low overpotential at 0.25 mA·cm−2 for 0.05 mAh·cm−2. Furthermore, the full cells consisting of Ta2O5@Zn anode and MnO2 or NH4V4O10 cathode all present outstanding electrochemical performance, indicating its high reliability in practical applications. This strategy brings new opportunities for the future development of rechargeable AZIBs.
UR  - https://doi.org/10.1007/s12274-022-5270-x
DO  - 10.1007/s12274-022-5270-x