Problems of Hydrogen Energy and a Promising Direction for their Solution

In this paper, the electrochemical method of hydrogen accumulation in the electrodes of nickel-cadmium batteries, depending on their service life, has been investigated. It has been experimentally proven that hydrogen accumulates in batteries electrodes in large quantities and reaches its maximum capacity within about five years. It has been demonstrated that metal hydrides, which are hydrogen compounds, accumulate in the metal-ceramic matrices of sintered oxide-nickel electrodes. The nickel matrix has a gravimetric capacity of 20.3 weight percent and a volumetric capacity of 406 kg m-3 with a relative experimental error of 4%. , it should be noted that none of the hydrogen storage systems that exist today meet the requirements of the US DOE in all criteria. It is the lack of reliable hydrogen storage systems that can compete with the fuel tanks of cars containing gasoline that is the main obstacle to the widespread use of hydrogen energy. The measured gravimetric capacities for metal-ceramic matrices surpass previous measurements for reversible hydrogen storage systems as well as the US Department of Energy's (DOE) requirements for onboard hydrogen storage systems by almost four times. It is concluded that using the electrochemical method of hydrogen accumulation and the thermal runaway process, one can not only achieve all the criteria established by the US DOE for metal hydrides, but also significantly exceed them.