鸡蛋黄热解制备高效双功能电催化剂

摘要

廉价高效的可催化氧还原反应（ORR）和析氧反应的双功能电催化剂是实现可再生燃料电池和金属-空气电池等化学电源大规模商业化应用的关键因素。以鸡蛋黄和六水合氯化钴为前驱体，采用简单的一步热解法制备了杂原子掺杂碳材料（HDC）负载Co₂P纳米颗粒双功能电催化剂（Co₂P-HDC）。采用SEM、TEM、XRD以及XPS等表征手段对所得催化剂的微观形貌、晶体结构以及表面元素组成进行了分析表征。运用旋转圆盘电极（RDE）技术考察了Co₂P-HDC在碱性介质中催化ORR和OER的性能。结果表明，Co₂P-HDC催化剂表现出与商品Pt/C催化剂相当的ORR催化活性以及优于Pt/C催化剂的OER催化活性和耐久性，有望应用于金属-空气电池、可再生燃料电池等化学电源中，并为鸡蛋黄的高附加值利用提供新的途径。

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	邵泽超
	王宇新

关键词：鸡蛋黄双功能电催化剂氧还原反应析氧反应

Abstract：

Cost-efficient bi-functional electrocatalyst which can catalyze the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) is key to the widespread commercialization of regenerative fuel cells and metal-air batteries. In this study, a heteroatoms doped carbon (HDC) supported Co₂P nanoparticles (Co₂P-HDC) bi-functional electrocatalyst was prepared via a facile one step pyrolysis in molten salt with hen's egg yolk and cobalt chloride as precursor. The structural and functional properties of the as-obtained Co₂P-HDC are studied via SEM, TEM, XRD and XPS. A rotating disk electrode (RDE) was used to characterize the electrocatalytic performance of Co₂P-HDC towards ORR and OER in an alkaline media. In fact, the Co₂P-HDC catalyst demonstrates similar ORR activity and higher OER activity and stability as compared with a commonly used commercial Pt/C catalyst, and is expected to find application in metal-air batteries, regenerative fuel cells, etc. Furthermore, this would also be a new way to make good use of the yolk.

Keywords： egg yolk； bi-functional electrocatalyst； oxygen reduction reaction； oxygen evolution reaction

Received 2015-05-12;

Fund:

天津市科技支撑计划（15ZCZDSF00040）。

Corresponding Authors: 王宇新,E-mail:yxwang@tju.edu.cn. Email: yxwang@tju.edu.cn

About author: 邵泽超(1991-),男,硕士研究生,现从事应用电化学方面的研究.

引用本文:

邵泽超, 王宇新.鸡蛋黄热解制备高效双功能电催化剂[J]. 化学工业与工程, 2017,34(5): 83-88

Shao Zechao, Wang Yuxin.An Efficient Bi-functional Electrocatalyst Prepared from Pyrolyzed Egg Yolk[J]. Chemcial Industry and Engineering, 2017,34(5): 83-88

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