The growing demand for proficient and sustainable energy storage and supply technologies has led to the growing development of advanced ionomer membranes, metal catalysts, and electrodes. These membranes have crucial functions in electrochemical devices such as fuel cells, electrolyzers, and others. They permit the efficient transfer of protons and other ionic species, and they also have important reactant barrier functions in the devices. Perfluorosulfonic acid (PFSA) membranes are commonly preferred ionomer membranes due to their excellent properties such as high proton conductivity, low gas permeability, and chemical and thermal stabilities. Multilayer system of ionomer membrane, electrode, catalyst layers (CLs), gas diffusion layers (GDLs), and bipolar plates are collectively referred to as membrane electrode assemblies (MEAs). They are well adopted in proton exchange membrane fuel cells (PEMFC) as the core component due to their versatile compatibility with different fuels such as H2, ammonia, and alcohols (ethanol, methanol, and glycol) [4]. Despaired fuel cells as a result of MEA deterioration processes often lead to stock piling of high-cost membranes that pose an environmental threat. Additionally, the lack of recycling processes for the ionomer membrane from secondary sources, such as electrolyzers and end-of-life (EoL) fuel cells, remains a significant challenge to sustainability associated with high material costs and environmental adversity. To address the concerns, the investigation of the sustainable recovery process of the ionomer membrane through membrane dissolution using less robust and hazardous solvents seeks to resolve the issue. The design and optimization of the novel recovery processes are investigated with methods that minimize waste generation, preserve the structural integrity of the membrane, and have low power input.

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Development of a Sustainable Recovery Process and Characterization of Ionomer Membrane

  • Bethuel K. S. Langa,
  • Azile Nqombolo,
  • Edson L. Meyer,
  • Mojeed A. Agoro,
  • Nicholas Rono

摘要

The growing demand for proficient and sustainable energy storage and supply technologies has led to the growing development of advanced ionomer membranes, metal catalysts, and electrodes. These membranes have crucial functions in electrochemical devices such as fuel cells, electrolyzers, and others. They permit the efficient transfer of protons and other ionic species, and they also have important reactant barrier functions in the devices. Perfluorosulfonic acid (PFSA) membranes are commonly preferred ionomer membranes due to their excellent properties such as high proton conductivity, low gas permeability, and chemical and thermal stabilities. Multilayer system of ionomer membrane, electrode, catalyst layers (CLs), gas diffusion layers (GDLs), and bipolar plates are collectively referred to as membrane electrode assemblies (MEAs). They are well adopted in proton exchange membrane fuel cells (PEMFC) as the core component due to their versatile compatibility with different fuels such as H2, ammonia, and alcohols (ethanol, methanol, and glycol) [4]. Despaired fuel cells as a result of MEA deterioration processes often lead to stock piling of high-cost membranes that pose an environmental threat. Additionally, the lack of recycling processes for the ionomer membrane from secondary sources, such as electrolyzers and end-of-life (EoL) fuel cells, remains a significant challenge to sustainability associated with high material costs and environmental adversity. To address the concerns, the investigation of the sustainable recovery process of the ionomer membrane through membrane dissolution using less robust and hazardous solvents seeks to resolve the issue. The design and optimization of the novel recovery processes are investigated with methods that minimize waste generation, preserve the structural integrity of the membrane, and have low power input.