Which mechanism limits ionic conductivity in solid-state electrolytes within lithium-ion batteries at low temperatures?

💡 Explanation

At low temperatures, solid-state electrolytes exhibit decreased ionic conductivity due to increased grain boundary resistance because ion transport is impeded by energy barriers increased at interfaces hindering ion hopping. Therefore, grain boundary resistance limits conductivity, rather than bandgap, salt decomposition, or polymer mobility which involve different temperature-dependent limitations.

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