Ni2P nanoparticles encapsulated in carbon nanotubes as high-performance electrocatalyst for rechargeable zinc-air battery

被引：3
|
作者：
Ma, Kaiwen [1 ]
Guo, Ruiqi [1 ]
Wang, Jiajie [1 ]
Li, Xikun [1 ]
Ma, Mengjie [2 ]
Sheng, Minqi [1 ]
机构：
[1] Soochow Univ, Sch Iron & Steel, Suzhou 215137, Peoples R China
[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 333卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Electrocatalysts; Ni 2 P nanoparticles; Carbon nanotubes; Zinc -air battery; HIGH-ENERGY DENSITY;
D O I：
10.1016/j.matlet.2022.133665
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Designing electrocatalysts with high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performance for rechargeable Zn-air batteries (RZAB) is significant yet challenging. Herein, Ni-based phosphide (Ni2P) nanoparticles encapsulated in carbon nanotubes (Ni2P/CNTs) are prepared via chemical vapor deposition (CVD) and phosphating methods. The optimized Ni2P/CNTs exhibit a higher half-wave potential of 0.859 V for ORR and a lower overpotential of 304 mV at 10 mA cm-2 for OER in 1.0 M KOH than reference catalysts, respectively. Furthermore, the RZAB assembled using the Ni2P/CNTs shows a considerable open circuit potential of 1.42 V and a potential power density of 153 mW cm-2, which are higher than commercial Pt/C + RuO2 based batteries.
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页数：4
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