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可充电空气电池的合金合甲酸多聚合物基电催化剂

Yogesh Kumar¹, Srinu Akula¹, Elo Kibena-Põldsepp¹

¹Institute of Chemistry, University of Tartu, 50411 Tartu, Estonia.

Materials (Basel, Switzerland)

|July 29, 2023

概括

这项研究开发了一种新型的和辅助多孔碳催化剂 (CoN-PC-2),用于增强可充电空气电池 (RZAB). 催化剂显示出改善的氧气减少和演化反应,提高了电池的性能和稳定性.

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
储能储能储能储能储能储能

背景情况:

可充电的空气电池 (RZAB) 提供高能量密度和成本效益,但面临氧气反应缓慢和循环能力差的挑战.
有效的电催化剂对于克服RZAB中的这些局限性至关重要.

研究的目的:

为了合成和表征一种新型的和配合的多孔碳 (CoN-PC-2) 催化剂.
评估CoN-PC-2在氧降解反应 (ORR) 和氧演化反应 (OER) 中的电催化活性.
评估CoN-PC-2作为可充电空气电池中的阴极催化剂的性能.

主要方法:

制备用二甲基伊米达和为剂的多孔碳 (CoN-PC-2) 来自使用二甲基伊米达和类素前体的化聚合物网络.
催化剂的ORR和OER活动的电化学表征.
使用CoN-PC-2催化剂制造和测试RZAB.

主要成果:

CoN-PC-2催化剂对ORR (半波电位为0.81V) 和OER (E_j=10为1.70V) 均表现出显著的电催化活性.
使用 CoN-PC-2 的 RZAB 实现了 158 mW cm-2 的峰值功率密度.
电池在充放电循环过程中表现出极好的稳定性.

结论:

开发的CoN-PC-2催化剂有效地解决了RZABs中缓慢的氧反应动力学.
这种分层的多孔碳材料对先进的储能应用有很大的前景.
该研究为商业RZAB设计先进的碳材料提供了洞察力.

关键词:

电催化剂是一种电催化剂.的兴奋剂的兴奋剂.非贵金属催化剂非贵金属催化剂氧气进化反应反应氧气进化反应氧减少反应反应的氧减少反应.黄醇-甲 formaldehyde 网络中的一个.可充电的空气电池可以充电.

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