Typically, TMPs are synthesized by precipitation from solution, hydrothermal methods, molten salt, microwave, or mechanochemical syntheses . Thereby, highly crystalline and/or amorphous bulk TMPs can be obtained. In particular, the amorphous state is often desired, because the absence of long-range ordering in TMPs enhances their reaction kinetics compared to the crystalline equivalents . Even assuming similar chemical composition, crystalline and amorphous compounds may in general exhibit completely different physicochemical properties such as solubility, reactivity, or adsorption. For example, amorphization of pharmaceutical ingredients is a well-known strategy to improve their solubility and hence biomedical activity . In the case of electrocatalysis, the amorphicity of the material enhances the overall free Gibbs energy of formation which could potentially lead to significantly improved cell potential and higher open circuit voltages in amorphous electrodes compared to crystalline bulk counterparts . However, the as-synthesized TMP solids, crystalline or amorphous, typically exhibit low surface area, which must be increased by engineering the porosity into the material.