Which process limits hydrogen storage density in metal hydrides at room temperature?

💡 Explanation

When hydrogen interacts with metal hydrides, kinetic energy overcomes dissociation, a barrier hindering absorption because hydrogen molecules must break into atoms before bonding, limiting the rate at room temperature. Therefore kinetic dissociation limits storage, rather than thermal instability, electronic effect, or oxidation which are separate and often relevant issues at elevated temperatures or specific material conditions.

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