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Co₂P/CoP嵌入N,P,S三重合的空心碳中,用于增强氧气电催化

Tianli Zhang¹, Pengfei Yu², Xingmei Guo¹

¹School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China.

Journal of colloid and interface science

|October 4, 2024

概括

研究人员开发了一种新的催化剂,Co2P/CoP@NPS-HC,用于空气电池. 这种催化剂在减少氧和演化反应中表现出色,性能优于商业催化剂.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

开发高效的氧气电催化剂对于可充电的空气电池至关重要.
在空心碳结构中同时分散化物晶体和多个异构原子是一个重大挑战.

研究的目的:

为空气电池准备一种新的双功能电催化剂.
为了研究化物纳米粒子和原子合的空心碳结构对催化活性的协同效应.

主要方法:

采用包装-热解策略,合成嵌入在,和硫中的Co2P/CoP纳米粒子,三重化空心碳 (Co2P/CoP@NPS-HC).
材料的结构和组成的特征.
氧减少反应 (ORR) 和氧演化反应 (OER) 的电催化性能在空气电池设置中进行了评估.

主要成果:

Co2P/CoP@NPS-HC催化剂表现出0.82V的高半波潜力与ORR的RHE相比.
它在10 mA cm-2.2时显示出令人印象深刻的400 mV的OER超电位.
与商业Pt/C相比,催化剂显示出更高的耐用性和甲醇耐受性.

结论:

Co2P/CoP@NPS-HC催化剂对空气电池表现出极好的双功能电催化活性.
均分散的Co2P/CoP纳米粒子和N,P,S三重合的空心碳结构之间的协同效应增强了催化点,表面积和导电性.
这项工作为设计用于储能应用的高性能电催化剂提供了一个有前途的策略.

关键词:

在Co(2) P/CoP纳米粒子中.异构原子添加碳的碳.氧气电催化剂的电催化作用包装-热解的战略.空气电池是一种空气电池.

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