DMFC阳极催化剂用GRQD-NiCo2O4复合物的制备与电催化活性分析

doi:10.19964/j.issn.1006-4990.2020-0434

无机盐工业 ›› 2021, Vol. 53 ›› Issue (7): 109-112.doi: 10.19964/j.issn.1006-4990.2020-0434

DMFC阳极催化剂用GRQD-NiCo₂O₄复合物的制备与电催化活性分析

李雪莲(),吴东恩,邵学兰,黄德友,蒯贤芬

常州工程职业技术学院化工学院,江苏常州 213164

收稿日期:2020-08-02 出版日期:2021-07-10 发布日期:2021-07-13
作者简介:李雪莲（1979— ）,女,硕士,副教授,主要研究化学品合成与功能材料的制备;E-mail： czlxl2015@163.com。
基金资助:
江苏省高等职业院校教师专业带头人高端研修项目资助(2019GRFX008);国家级职业教育教师教学创新团队建设项目(360A10-04-2019-0017-1/1-72);江苏高校青蓝工程资助;江苏省高等职业教育高水平骨干专业建设项目(苏高教[2017]17号文,第80号)

Preparation and electro-catalytic activity analysis of GRQD-NiCo₂O₄complexes for DMFC anode catalysts

Li Xuelian(),Wu Dongen,Shao Xuelan,Huang Deyou,Kuai Xianfen

School of Chemical Engineering,Changzhou Vocational Institute of Engineering,Changzhou 213164,China

Received:2020-08-02 Online:2021-07-10 Published:2021-07-13

摘要/Abstract

摘要：

采用水热法制备GRQD-NiCo₂O₄复合物,利用XRD、SEM及TEM分析其微结构,并探讨其作为DMFC阳极催化剂使用时的电化学性能。微结构分析表明所得GRQD-NiCo₂O₄复合物皆为具NiCo₂O₄单一相的尖晶石结构,且GRQD质量浓度高于0.25 g/mL后表面形貌将转变GRQD与NiCo₂O₄相互结合的状态。电化学分析表明添加GRQD可有效增强NiCo₂O₄的导电性并提升其电化学稳定性,其中GRQD质量浓度为0.25 g/mL时所得样品经500次循环测试后电流密度约为77.5 A/g,与循环5次后相比其电流密度剩余量最大（约为69.7%）,该样品作为DMFC阳极催化剂使用时性价比最佳。

关键词: DMFC阳极催化剂, GRQD-NiCo₂O₄复合物, 微结构, 电催化活性

Abstract:

：GRQD-NiCo₂O₄ complexes were prepared by hydrothermal method,the microstructure was analyzed by XRD,SEM and TEM,and the electro-catalytic activity as DMFC anode catalysts was discussed.The microstructure analysis showed that the GRQD-NiCo₂O₄ complexes were spinel-type structure with NiCo₂O₄ single phase,and when the concentration of GRQD was higher than 0.25 g/mL,the surface morphology would change the state that GRQD and NiCo₂O₄ combined with each other.Electrochemical analysis showed that adding GRQD could effectively enhance the conductivity and electrochemical stability of NiCo₂O₄.When the concentration of GRQD was 0.25 g/mL,the current density of the sample obtained after 500 cycles was about 77.5 A/g,and the remaining current density was the largest（about 69.7%） compared with that after 5 cycles.The sample had the best cost performance as DMFC anode catalyst.

Key words: DMFC anodic catalysts, GRQD-NiCo₂O₄ complexes, microstructure, electro-catalytic activity

中图分类号:

O643.36

李雪莲,吴东恩,邵学兰,黄德友,蒯贤芬. DMFC阳极催化剂用GRQD-NiCo₂O₄复合物的制备与电催化活性分析[J]. 无机盐工业, 2021, 53(7): 109-112.

Li Xuelian,Wu Dongen,Shao Xuelan,Huang Deyou,Kuai Xianfen. Preparation and electro-catalytic activity analysis of GRQD-NiCo₂O₄complexes for DMFC anode catalysts[J]. Inorganic Chemicals Industry, 2021, 53(7): 109-112.

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GRQD质量浓度/（g·mL^-1）	最大电流密度/（A·g^-1）		电流剩余量/%
GRQD质量浓度/（g·mL^-1）	循环5次	循环500次	电流剩余量/%
0.00	79.8	48.5	60.8
0.05	89.1	61.1	68.5
0.25	111.2	77.5	69.7
0.50	137.3	90.8	66.1

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DMFC阳极催化剂用GRQD-NiCo₂O₄复合物的制备与电催化活性分析

Preparation and electro-catalytic activity analysis of GRQD-NiCo₂O₄complexes for DMFC anode catalysts

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