Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (6): 1108-1113.doi: 10.3866/PKU.WHXB201703222

• ARTICLE • Previous Articles     Next Articles

Statistic Thermodynamic Model of Hydrogen Absorption on Metal Powders

Guang-Xin WU1,2,3,*(),Wang-Jun PENG1,2,3,Jie-Yu ZHANG1,2,3   

  1. 1 State Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai 200072, P. R. China
    2 Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University, Shanghai 200072, P. R. China
    3 Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, P. R. China
  • Received:2016-12-09 Published:2017-05-19
  • Contact: Guang-Xin WU E-mail:gxwu@shu.edu.cn
  • Supported by:
    The project was supported by the National Natural Science Foundation of China(51104098);The project was supported by the National Natural Science Foundation of China(51674163);Science and Technology Committee of Shanghai, China(14521100603);Science and Technology Committee of Shanghai, China(16ZR1412000)

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Abstract:

Based on zero-order Bragg-Williams approximation, a new statistic thermodynamic model is presented herein. The distinctive feature of the new model is that an apparent compressibility factor α is introduced to correct the volume change of high-pressure gases and ensure no loop-like curves are obtained in the fitting results. The new model is successfully applied to investigate hydrogen absorption on metal powders. Our results indicate that the model works very well and can be used to predict PCT curves at different temperatures. Hence, our new model exhibits significant potential for application in practical systems.

Key words: Statistic thermodynamic theory, Hydriding process, Hydrogen storage materials powder