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Effect of La Doping on Microstructure and Electrocatalytic Performance of NiCo / Cu Electrode
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Affiliation:

College of Materials Science and Engineering,Zhejiang University of Technology

Clc Number:

TQ153.2,TG178

Fund Project:

the National Natural Science Foundation of China (No.51101140) and the Natural Science Foundation of Zhejiang Province (No. LY16E010004 )

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    Abstract:

    In this study, catalytic electrode prepared via a simple one-step hydrothermal method to load La-doped NiCo on a copper sheet. XRD, FESEM, cyclic voltammetry and other tests were used to study the influence of the molar ratio of NiCo salt and the amount of La doped on the microstructure of the sample and the electrocatalytic oxidation performance of methanol. The results show that the introduction of Co increases the particle size, and the performance get better when the molar ratio of Ni2 +/Co2 + in the solution is 8: 2. The doping of La affect the morphology of the particles. As the doping amount of La increases, the peak current density can increase and then decrease. The sample doped with 10-4 mol/L La obtained superior performance; the peak current density reached 50.36 mA/cm2. After 2000 cycles, it retained nearly 100% of the initial current density. It has good stability and can be used with direct methanol fuel cell (DMFC).

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[Wang Gui, Tang Yiping, Cao Huazhen, Zheng Guoqu, Hou Guangya. Effect of La Doping on Microstructure and Electrocatalytic Performance of NiCo / Cu Electrode[J]. Rare Metal Materials and Engineering,2020,49(12):4230~4235.]
DOI:10.12442/j. issn.1002-185X.20191106

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History
  • Received:December 30,2019
  • Revised:February 12,2020
  • Adopted:February 21,2020
  • Online: January 13,2021
  • Published: