Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (7): 1378.doi: 10.7503/cjcu20150012

• Physical Chemistry • Previous Articles     Next Articles

Effect of IrO2 Modification of Ti Mesh on Electrochemical Performance of Collector Layer for Solid Polymer Electrolyte Electrolyzer

SONG Yukun1,2, LÜ Hong1,2,*(), HAO Chuanpu1,2, MI Cangen1,3   

  1. 1. Clean Energy Automotive Engineering Center,2. School of Automotive Studies, Tongji University, Shanghai 201804, China
    3. College of Materials Science and Engineering, Hunan University, Changsha 410012, China
  • Received:2015-01-07 Online:2015-07-10 Published:2015-06-17
  • Contact: LÜ Hong E-mail:lvhong@tongji.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21306141)

Abstract:

Modified Ti meshes used as anode collector layer of solid polymer electrolyte(SPE) electrolyzer were prepared through Adams fusion method. The Ti mesh modification synchronized with IrO2 preparation. The physico-chemical properties of the modified Ti meshes and IrO2 catalyst were studied by scanning electron microscopy(SEM), X-ray diffraction(XRD) and transmission electron microscopy(TEM). An IrO2 layer was formed onto the Ti mesh’s surface and the size of anode catalyst IrO2 was in nanoscale. The SPE electrolyzer employing modified Ti mesh showed a higher performance due to the extension of three-phase activity sites from catalyst layer to diffusion layer. 100 mesh Ti mesh showed lower Rct and better catalyst loadings compared with 50 mesh one, and owned a good durability as well. Ti meshes with different catalyst loadings were tested and the Ti mesh with 1.38%(mass fraction) catalyst loading exhibited the best performance, which yielded a potential of 2.028 V at a current density of 1 A/cm2.

Key words: Solid polymer electrolyte(SPE) electrolyzer, Adams fusion method, Anode collector, IrO2 catalyst, Modified Ti mesh

CLC Number: 

TrendMD: