Green hydrogen supply chain concerns

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Fom pv magazine Global

A document published by the European Commission for the bloc’s Council of Ministers has identified various supply chain concerns related to the planned ramping up of green hydrogen production on the continent.

With the EU having already noted potential future shortages of solar panel and battery storage raw materials such as cobaltlithiumaluminiumnickel, steel and copper; various basic materials needed for electrolysers, fuel cells and hydrogen storage have also been identified by the commission as potentially problematic.

The Strategic dependencies and capacities document published by the commission a week ago identified 30 raw materials which are sourced by the EU – and global rivals – from a limited number of countries. Of those, the commission identified 13 materials as critical to the deployment of green hydrogen production, with the EU aiming for 6 GW of renewable hydrogen electrolyser capacity by 2024 and 40 GW this decade, from a base of less than 1 GW last year.

Catalysts

Most of the critical materials are catalysts, stated the commission study, with platinum, for example, accounting for around half the cost of a fuel cell stack. South Africa is the world’s primary source of platinum, noted the study, with Russia and Zimbabwe the next biggest suppliers. In terms of more processed materials needed for fuel cells, the EU is currently capable of producing only around 15-20% of them and is critically reliant on non-EU nations for four components: CFCs; certain polymers; carbon and cloth paper; and nanomaterials and carbon nanotubes.

The high-quality carbon fibre needed to construct compressed hydrogen tanks for storage and transport is almost entirely sourced by the EU from Asia as well, the commission said.

Solutions to the potential European supply chain dependencies – which are currently being highlighted in the medical industry by the Covid-19 crisis – include wider recycling of renewable hydrogen components, diversification of foreign supply, stockpiling by EU member states and reducing the rare metal content of such items. For instance, the platinum content of fuel cells has already been reduced and could be at least partially replaced with more commonly available palladium.

The document also noted the global semiconductor chip shortage which is starting to be highlighted as a problem by some solar manufacturers. With the Chinese, American, South Korean and Japanese governments already planning big investments to reduce their dependency on Taiwan for the world’s smallest, most advanced, 5nm chips, the EU is heavily reliant on U.S.-held design patents and on Asian nations for packaging, testing and the fabrication of such devices.

Europe, at present, is incapable of manufacturing chips smaller than 22nm and the commission said the stipulation at least 20% of its post-Covid Recovery and Resilience Fund be spent on projects for the digital transition could go a long way to addressing the problem. That 20% would equate to member states sharing €145 billion of digital transformation investment in the next two or three years.

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