Notably, the catalytic ability frequently exhibits an opposite trend compared to the adsorption capacity . This finding underscores the significance of achieving an optimal balance in the hydrogencatalyst interaction strength. An excessively strong binding may impede the desorption of H2, while an insufficient binding may hinder the initial adsorption of hydrogen atoms. This balance is often described by the Sabatier principle, which states that the optimal catalyst should bind the reactants neither too strongly nor too weakly. The enthalpy of hydrogen adsorption and desorption on catalyst surfaces significantly affects the catalytic hydrogen evolution reaction. The optimization of this parameter through various strategies, such as strain engineering , doping , or the design of novel materials like La2Sr2PtO7+δ , can result in enhanced catalytic performance. The comprehension and manipulation of these enthalpy effects are imperative for the development of more efficient and cost-effective hydrogen evolution catalysts.