The team was able to identify the precise gas concentrations at which point methane and ethane, acting as thermodynamic modulators, best enhance the H2 storage capacity of HNGB hydrates. Even at moderate pressure and temperature conditions (100 atmospheres and 8 °C, respectively), the scientists achieved the maximum theoretical H2 storage possible for two types of clathrate hydrate cages: two and four H2 molecules in small and large cages, respectively. This feat had not been reported before, and the unprecedented findings of this study could thus help in the design of HNGB hydrate storage media.
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