Enabling hydride decomposition without heat treatments

For hydrogen embrittlement resistance or, potentially, for hydrogen storage, controlling hydrides is the key in HCP metals. Conventional approach for hydride decomposition relies on high-temperature thermal processes that may compromise material integrity. We present here an electrochemical process which can decompose hydrides and extract hydrogen at room temperature via surface-driven reactions. Using Ti-6Al-4V alloy as a model system, this study demonstrates that this method effectively removes hydrides without degrading the microstructure or mechanical properties, with tensile properties fully recovered to the as received state. Furthermore, no hydride reformation was observed after treatment, confirming efficient hydrogen removal. Compared to thermal decomposition, this electrochemical process offers distinct advantages, including mild operating conditions, scalable design, on-demand control via applied voltage, and compatibility with renewable energy sources. These features extend its potential beyond hydrogen embrittlement mitigation, enabling integration into distributed hydrogen storage and energy systems.