期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 628, 期 -, 页码 499-507出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2022.07.180
关键词
Bio-derived bifunctional electrocatalyst; Guanine; Iron-nickel alloy; Nitrogen-doped carbon nanosheets; Rechargeable Zn-air battery
资金
- National Natural Science Foundation of China [21805245]
This study successfully synthesized FeNi alloy confined in N-doped carbon nanosheets via a facile method and demonstrated its excellent performance in both ORR and OER. The FeNi@NCSs-based Zn-air battery showed higher open circuit voltage, larger power density, and significant durability.
It is imperative to design and manufacture electrocatalysts towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for popularization of rechargeable Zn-air batteries. Herein, FeNi alloy confined in N-doped carbon nanosheets (FeNi@NCSs) was harvested via a facile complexation-pyrolysis strategy from the mixture of guanine and metal chlorides. After strictly exploring the pyrolysis temperature and metal types, the resulted FeNi@NCSs showed greatly improved performances on both the ORR (onset potential of 0.93 V and half-wave potential of 0.84 V) and OER (overpotential of 318 mV at 10 mA cm(-2) and 379 mV at 100 mA cm(-2)). Further, the FeNi@NCSs based Zn-air battery exhibited a higher open circuit voltage (1.496 V), a larger power density (128.8 mW cm(-2)), and prominent durability (360 cycles, 120 h). This study provides an appealing approach to utilize biomass for synthesis (C) 2022 Elsevier Inc. All rights reserved.
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