Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (4): 1149-1164.doi: 10.19799/j.cnki.2095-4239.2021.0718

• Special issue of International Outstanding Young Scientists for Energy Storage • Previous Articles     Next Articles

Development and application of multiphysics models for electrochemical energy storage and conversion systems

Nan LIN1(), Ulrike KREWER2, Jochen ZAUSCH3, Konrad STEINER3, Haibo LIN4, Shouhua FENG1   

  1. 1.State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Changchun 130012, Jilin, China
    2.Institute for Applied Materials-Electrochemical Technologies, Karlsruhe 76131, Germany
    3.Fraunhofer Institute for Industrial Mathematics, Kaiserslautern 67663, Germany
    4.College of Chemistry Jilin University, Changchun 130012, Jilin, China
  • Received:2021-12-30 Revised:2022-03-11 Online:2022-04-05 Published:2022-04-11
  • Contact: Nan LIN E-mail:nanlin@jlu.edu.cn

Abstract:

The use of electrochemical energy storage and conversion technology is a primary method for addressing energy and environmental problems. The key scientific and technological issues of its material development, optimization and design, and system management for industrial-scale applications have received a lot of attention. This paper describes three application cases: lithium-ion batteries, supercapacitors, and proton exchange membrane water electrolysis (PEMWE), as well as the multiphysics models that were developed for each. We discovered and investigated the interactions of transport phenomena, electrochemistry, and current density distributions in the large-format pouch cell based on such experimentally validated models; we introduced "electrostatic image forces" to study the effects of hierarchically porous structures on double layer and pseudocapacitance of the supercapacitor; we considered the transient-state issues in PEMWE engineering, and investigate the effects of two-phase flow transport phenomena on the electrolytic performance. The results show that high C-rate operations and jelly roll materials with low thermal conductivities significantly increase the heterogeneity of internal reactions and current density distributions. It also claims that the volume ratio of micro and mesopores influences the allocation of alternative capacitances in the hierarchical pores and ion transport processes. PEMWE requires materials with high hydrophilia and high liquid saturations in the flow channels to improve electrolytic performance. As a result, the multiphysics models can help with theoretical interpretation and optimization in the areas of material design, process analysis, and system management optimization.

Key words: multiphysics modelling, electrochemical energy storage, electrochemical engineering, lithium-ion batteries, supercapacitors, water electrolysis

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