A team of scientists led by the University of Glasgow has discovered a more efficient method of splitting water into hydrogen and oxygen using electricity which it says could almost double the amount of hydrogen produced per millivolt. Researchers from universities across Europe have discovered a way to greatly increase the efficiency of water electrolysis, potentially doubling the amount of hydrogen produced during the process. ‘Green hydrogen’ – electrolysis powered by renewable energy with zero carbon emissions – is touted by many as a vital part of the energy transition, either as a transport fuel or long term electricity storage option. However, renewable energy electrolysis is still pricey compared to the same process when powered by fossil fuel and the fate of green hydrogen will hang on continuing clean energy price falls, according to some analysts. Reducing the amount of energy required to perform hydrolysis, of course, would be another way of cracking the nut. The European research team, led by Scotland’s University of Glasgow, worked with electrodes coated in a molybdenum telluride catalyst and found that when electricity was applied to the electrodes in a particular pattern of high-current pulses, the amount of hydrogen produced during electrolysis increased. By optimizing the pulse pattern, the team said it was able to almost halve the amount of electricity needed to produce a given amount of hydrogen.
PV Magazine 30th Oct 2019 read more »
Energy Networks Association report urges switch to hydrogen boilers, investment in carbon capture and storage development, and major energy efficiency programme. The annual cost of delivering a net zero gas grid could prove up to £13bn lower by 2050 if the UK switches to low carbon gases such as biomethane and hydrogen alongside the transition to renewable electricity.
Business Green 30th Oct 2019 read more »