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通过订购的Pd3Fe金属间电催化剂实现混合动力Li-air电池的增强循环稳定性

Zhiming Cui, Longjun Li, Arumugam Manthiram

Journal of the American Chemical Society

|May 29, 2015

概括

一种新型订购的铁 (Pd3Fe) 催化剂在性环境中提高了氧降解反应的性能. 这一进步显著改善了混合空气电池循环,实现了创纪录的耐用性.

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
催化剂是一种催化剂.

背景情况:

氧降解反应 (ORR) 对能量转换装置至关重要.
为性ORR开发高效和耐用的催化剂仍然是一个挑战.
空气电池提供高能量密度,但面临性能限制.

研究的目的:

为了合成和描述一个有序的Pd3Fe金属间催化剂.
在性条件下评估催化剂的活性和耐用性,以减少氧的反应.
评估混合空气电池系统中催化剂的性能.

主要方法:

有序的Pd3Fe金属间纳米颗粒的合成.
对ORR活性和耐久性的催化剂的电化学表征.
组装和测试使用Pd3Fe催化剂的混合空气全电池.

主要成果:

订购的Pd3Fe催化剂显示了氧降解反应的显著增强活性.
催化剂在性电解质中表现出优越的耐用性.
采用Pd3Fe催化剂的混合空气电池实现了报告中最佳的全电池循环性能 (220个循环,880小时).

结论:

订购的Pd3Fe是性氧减少反应的高效催化剂.
催化剂的性能转化为混合空气电池寿命的大幅改善.
这一发现为推进下一代储能技术提供了一个有希望的途径.

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