阴离子膜燃料电池阴极Co3O4/C催化剂的制备及ORR性能

王东超; 黄乃宝; 孙银; 张俊杰; 詹溯

doi:10.16411/j.cnki.issn1006-7736.2017.03.021

大连海事大学学报 >

2017 , Vol. 43 >Issue 3: 124 - 128

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.03.021

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阴离子膜燃料电池阴极Co₃O₄/C催化剂的制备及ORR性能

王东超 ,
黄乃宝 ,
孙银 ,
张俊杰 ,
詹溯

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(大连海事大学交通运输装备与海洋工程学院，辽宁大连 116026)

王东超（1993-），女，硕士生，E-mail：295980235@qq.com.

收稿日期: 2017-03-06

修回日期: 2017-04-13

网络出版日期: 2017-04-14

基金资助

国家自然科学基金资助项目（21676040；21276036）；辽宁省自然科学基金资助项目（2014025018)；辽宁省教育厅一般项目（L2014199）；中央高校基本科研业务费专项资金资助项目（3132016341）.

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Preparation of carbon supported Co₃O₄as cathode catalyst in anion membrane fuel cell and ORR performance

WANG Dong-chao ,
HUANG Nai-bao ,
SUN Yin ,
ZHANG Jun-jie ,
ZHAN Su

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（Transportation Equipment and Ocean Engineering College,Dalian Maritime University,Dalian 116026,China）

Received date: 2017-03-06

Revised date: 2017-04-13

Online published: 2017-04-14

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摘要

为降低阴离子膜燃料电池阴极氧还原反应（oxygen reduction reaction, ORR）催化剂的成本，通过简单的超声方法制备碳担载纳米Co₃O₄（Co₃O₄/C）催化剂，通过XRD、SEM手段对其结构、形貌进行表征，并评价其催化氧还原性能.结果表明，Co₃O₄/C催化剂在碱性溶液中表现出良好的ORR催化活性：随着Co₃O₄含量增加，催化活性先增加后减小；Co₃O₄含量达50%时，催化性能达到最佳，此时，氧还原反应的极化电流密度为2.93 mA·cm^-2（@-0.8 V），氧还原反应的电子转移数为2.51.与传统的Co₃O₄/C相比，本实验采用超声法制备的Co₃O₄/C催化剂合成方法简单、成本低，且有较高的氧还原活性，因此，在阴离子膜燃料电池阴极催化剂中有良好的应用前景.

关键词： Co₃O₄; 氧还原; 催化剂

本文引用格式

王东超 , 黄乃宝 , 孙银 , 张俊杰 , 詹溯 . 阴离子膜燃料电池阴极Co₃O₄/C催化剂的制备及ORR性能[J]. 大连海事大学学报, 2017 , 43(3) : 124 -128 . DOI: 10.16411/j.cnki.issn1006-7736.2017.03.021

Abstract

In order to reduce the cost of oxygen reduction reaction (ORR) in Anion membrane fuel cell, carbon supported Co₃O₄/C was synthesized as ORR catalyst by ultrasonic method. The structure and morphology of Co₃O₄/C catalyst were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The catalytic activity of the Co₃O₄/C catalysts for ORR was evaluated. Results show that catalyst exhibites better activity for ORR in alkaline solution. With Co₃O₄content increasing in Co₃O₄/C, the catalytic activity increases first and then decreases. Thus there is an optimal content of Co₃O₄ , which is 50%. At this point, the polarized current density is 2.93 mA·cm^-2(@-0.8V), the electron transfer number of oxygen reduction reaction is 2.51. Compared with the traditional method of preparation of Co₃O₄/C catalyst, the ultrasonic method used in this experiment is simple, with the lower cost and a higher activity of oxygen reduction. Therefore, this work can provide a facile method to obtain a Co₃O₄/C catalyst and it will have good prospect of application in anion membrane fuel cell cathode catalysts.

Key words： Co₃O₄; oxygen reduction reaction; catalyst

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