Thursday, 1 June 2017

Cheap, Scalable Water Splitting Fuels Future Hydrogen Economy

Source: R&D, 31st May 2017, by Penn State Materials Research Institute

Penn State Materials Research Institute reported, "(...) However, experimentally, there are drawbacks to using MoS2 as a catalyst. In its stable phase, MoS2 is a semiconductor, which limits its ability to conduct electrons. To get around that problem, the team added reduced graphene oxide, a highly conducting form of carbon. Then, to further decrease the free energy, they alloyed the MoS2 with tungsten to create a thin film with alternating graphene and tungsten-molybdenum disulfide layers. The addition of tungsten lowers the electrical voltage required to split water by half, from 200 millivolts with pure MoS2, to 96 millivolts with the tungsten-molybdenum alloy. (...)"

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