Abstract
The utilization of in-situ resources such as food waste or plants grown on Mars combined with the available Martian regolith and atmosphere presents a path towards battery separators with increased sustainability, energy density, and durability. Separators that focus on CO2 reduction take advantage of both a highly relevant source of materials on Mars and a solution to an increasingly relevant problem of the increase of atmospheric CO2 on Earth.In this paper we evaluate the electrochemical and thermal properties of gel electrolytes synthesized from food waste and their performance in CO2 reduction. Our work focuses on the extraction of pectins from soybean hull and tomato pomace as sources of inedible biomass. Cross-linking and ionic activity of the pectin-based gel electrolytes are determined by the integration of monovalent and divalent cations. A biomass-based polymer electrolyte provides a novel method of using in-situ resources for chemical conversion and energy storage that is critical for long-term space travel.
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