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Hydrogen Transport in Non‐Ideal Crystalline Materials
Author(s) -
Auinger Michael
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402001
Subject(s) - isothermal process , hydrogen , diffusion , thermodynamics , desorption , materials science , thermal desorption , thermal , transport phenomena , chemical physics , chemistry , physics , adsorption , organic chemistry
Hydrogen‐transport behaviour under (non‐)isothermal conditions is discussed. An extended modelling approach based on the effective diffusion coefficient is outlined for arbitrary temperature programmes, defect properties and hydrogen‐loading pressures. The influence of mathematical terms, such as the trap equilibrium reaction or microstructural changes, is critically discussed and examples of thermal desorption spectra and isothermal diffusion behaviour are given.