Degradation of Electrocatalysts Performance in Direct Methanol Fuel Cells

Chem. J. Chinese Universities

• 研究论文 • Previous Articles Next Articles

Degradation of Electrocatalysts Performance in Direct Methanol Fuel Cells

CHEN Wei-Min^1,2,3, SUN Gong-Quan¹, ZHAO Xin-Sheng¹, SUN Pi-Chang¹, YANG Shao-Hua¹, XIN Qin¹*

1. Dalian Institute of Chemical Physics, CAS, Dalian 116023, China;
2. School of Environmental and Chemical Engineering, Shenyang Institute of Technology, Shenyang 110168, China;
3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received:2006-07-12 Revised:1900-01-01 Online:2007-05-10 Published:2007-05-10
Contact: XIN Qin

Abstract

Abstract: A discharge test was conducted to evaluate the degradation of the performance of electrocatalysts in direct methanol fuel cells(DMFCs). The results of transmission electron microscopy(TEM) and X-ray diffraction(XRD) analyses show that after the test, the mean particle size of the anode electrocatalyst did not change, while that of the cathode electrocatalyst increased remarkably. The main reason for the sintering of electrocatalysts is the existence of liquids. Amorphous Ru species in the anode catalyst inhibit the growing of Pt crystallites. The electrochemical surface area(ECSA) decreased after the discharge test, with a degree higher than the specific surface area(SSA), both for the anode and the cathode. Part of ruthenium was lost from the anode electrocatalyst during the discharge test.

Key words: Direct methanol fuel cell(DMFC), Electrocatalyst, Discharge test, Performance degradation

CLC Number:

TrendMD:

CHEN Wei-Min^1,2,3, SUN Gong-Quan¹, ZHAO Xin-Sheng¹, SUN Pi-Chang¹, YANG Shao-Hua¹, XIN Qin¹*. Degradation of Electrocatalysts Performance in Direct Methanol Fuel Cells[J]. Chem. J. Chinese Universities, doi: .

[1]	FAN Jianling, TANG Hao, QIN Fengjuan, XU Wenjing, GU Hongfei, PEI Jiajing, CEHN Wenxing. Nitrogen Doped Ultra-thin Carbon Nanosheet Composited Platinum-ruthenium Single Atom Alloy Catalyst for Promoting Electrochemical Hydrogen Evolution Process [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220366.
[2]	WONG Honho, LU Qiuyang, SUN Mingzi, HUANG Bolong. Rational Design of Graphdiyne-based Atomic Electrocatalysts： DFT and Self-validated Machine Learning [J]. Chem. J. Chinese Universities, 2022, 43(5): 20220042.
[3]	JIN Xiangyuan, ZHANG Libing, SUN Xiaofu, HAN Buxing. Electrocatalytic CO₂ Reduction over Single-atom Catalysts [J]. Chem. J. Chinese Universities, 2022, 43(5): 20220035.
[4]	ZHANG Xiaoyu, XUE Dongping, DU Yu, JIANG Su, WEI Yifan, YAN Wenfu, XIA Huicong, ZHANG Jianan. MOF-derived Carbon-based Electrocatalysts Confinement Catalyst on O₂ Reduction and CO₂ Reduction Reactions [J]. Chem. J. Chinese Universities, 2022, 43(3): 20210689.
[5]	HE Yujing, LI Jiale, WANG Dongyang, WANG Fuling, XIAO Zuoxu, CHEN Yanli. Zinc-based Activated Fe/Co/N Doped Biomass Carbon Electrocatalysts with High Oxygen Reduction Activity [J]. Chem. J. Chinese Universities, 2022, 43(11): 20220475.
[6]	WU Yaqiang, LIU Siming, JIN Shunjin, YAN Yongqing, WANG Zhao, CHEN Lihua, SU Baolian. Synthesis of Zn-Doped NiCoP Catalyst with Porous Double-layer Nanoarray Structure and Its Electrocatalytic Properties for Hydrogen Evolution [J]. Chem. J. Chinese Universities, 2021, 42(8): 2483.
[7]	YANG Tao, YAO Huiying, LI Qing, HAO Wei, CHI Lifeng, ZHU Jia. Density Functional Theoretical Studies on the Promising Electrocatalyst of M-BHT（M=Co or Cu） for CO₂ Reduction to CH₄ [J]. Chem. J. Chinese Universities, 2021, 42(4): 1268.
[8]	ZHAO Guoqing, YUAN Zhao, WANG Lian, GUO Zhuo. Preparation of Ni₂P/N, S co-Doped Reduced Graphene Oxide Composites and Their Electrocatalytic Properties for Hydrogen Evolution^† [J]. Chem. J. Chinese Universities, 2020, 41(7): 1575.
[9]	JIANG Yuanyuan, LI Boyu, LU Yizhong, WU Tongshun, HAN Dongxue. Oxygen Evolution Reaction Electrocatalytic Performance Analysis of Electroless Plated Ni-B_x [J]. Chem. J. Chinese Universities, 2020, 41(12): 2774.
[10]	LIN Zhouchen,HUANG Qiaoxi,LEI Ming. Fabrication and Electrocatalytic Performance of Graphene-fullerene Ammonium Iodide Composite Supported Pd Nanocatalyst for Ethanol Oxidation^† [J]. Chem. J. Chinese Universities, 2019, 40(5): 1013.
[11]	TANG Jiayi,YAO Junjie,ZHANG Xiaojun,MA Liang,ZHANG Tingmei,NIU Zheng,CHEN Xiangzhen,ZHAO Liang,JIANG Lin,SUN Yinghui. Multi-shell Hollow FeP Microspheres as Efficient Electrocatalyst for Hydrogen Evolution at All pH Values ^† [J]. Chem. J. Chinese Universities, 2019, 40(11): 2340.
[12]	SHI Yue,MAO Qing,XIAO Cheng,JING Weiyun,ZHANG Xueyuan. Nonlinear Spectroscopy Analysis for Electrocatalytic Oxidation of Methanol on PtRu/C Surface^† [J]. Chem. J. Chinese Universities, 2018, 39(9): 2017.
[13]	WANG Xiuli, HE Xingquan. Electrocatalytic Performance of Fe₉S₁₀ Nanoparticles Loaded Nitrogen and Sulphur Codoped Porous Carbon for Oxygen Reduction Reaction^† [J]. Chem. J. Chinese Universities, 2018, 39(7): 1524.
[14]	DI Muxin, XIAO Guozheng, HUANG Peng, CAO Yihuan, ZHU Ying. Co/N Co-doped Carbon Nanotube/Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction^† [J]. Chem. J. Chinese Universities, 2018, 39(2): 343.
[15]	CHEN Weimin, ZHU Zhenyu. Performances of a Hybrid Carbon Material Supported Pd Catalyst for Ethanol Electrooxidation^† [J]. Chem. J. Chinese Universities, 2018, 39(2): 337.

Degradation of Electrocatalysts Performance in Direct Methanol Fuel Cells

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments