4.8 Article

A high-precision approach to reconstruct distribution of relaxation times from electrochemical impedance spectroscopy

Journal

JOURNAL OF POWER SOURCES
Volume 308, Issue -, Pages 1-6

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.01.067

Keywords

Distribution of relaxation time (DRT); Impedance spectroscopy; Fuel cells

Funding

  1. Natural Science Foundation of China [51402066, 51371070]
  2. Fundamental Research Funds for the Central Universities [HIT. NSRIF. 20167]
  3. China Postdoctoral Science Foundation [2015M571410]
  4. Science and Technology on Advanced Composites in Special Environment Laboratory of Harbin Institute of Technology

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A new Tikhonov regularization approach without adjusting parameters is proposed for reconstructing distribution of relaxation time (DRT). It is capable of eliminating the pseudo peaks and capturing discontinuities in the DRT, making it feasible to resolve the number and the nature of electrochemical processes without making assumptions. (C) 2016 Elsevier B.V. All rights reserved.

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