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聚氨酸支持的Ni₃Fe氧化物中的催化剂支持相互作用,以促进可充电Zn-Air电池的氧气演变活动

Xiaohong Zou¹, Qian Lu^2,3, Mingcong Tang¹

¹Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, People's Republic of China.

Nano-micro letters

|September 20, 2024

概括

这项研究通过优化催化剂-支持相互作用来增强氧化演化反应 (OER) 催化剂. 聚氨酸支持的Ni3Fe氧化物证明了可充电Zn-空气电池的提高活性和稳定性.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

催化剂支持相互作用对于氧化演化反应 (OER) 的效率至关重要.
开发先进的催化剂对于储能应用,如气电池至关重要.

研究的目的:

调节聚氨酸支持的Ni3Fe氧化物 (Ni3Fe氧化物/PANI) 中的催化剂支持相互作用,以增强OER.
研究改善催化活性背后的机制.
为了评估Ni3Fe氧化物/PANI在可充电Zn-空气电池中的性能.

主要方法:

用聚氨酸支持的Ni3Fe氧化物 (Ni3Fe氧化物/PANI) 制造,具有强大的异构接口.
电化学表征以确定OER活动 (过电,特异性活动).
使用优化的催化剂组装和测试可充电Zn-空气电池.

主要成果:

氧化Ni3Fe/PANI在10 mA cm-2时表现出270 mV的超电位,其特异活性是氧化Ni3Fe的3.84倍.
接口Ni-N键增强了Ni-O共价性,促进了电荷和质量转移.
可充电的Zn-空气电池在10 mA cm-2的低充电电压1.95 V的情况下,在400小时内表现出稳定的循环运行.

结论:

优化的催化剂-支持相互作用显著提高了OER性能.
氧化Ni3Fe/PANI是高效和稳定的Zn-空气电池的一个有前途的催化剂.
这项工作为设计高性能OER催化剂提供了新的策略.

关键词:

催化剂支持互动互动.异面接口异面接口氧的演化反应反应的反应.支持的催化剂在Zn-空气电池.

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