manufactured · input
Purified Water (for Electrolysis)
Feedstock for green hydrogen production via electrolysis. PEM electrolyzers require ultrapure water (resistivity >1 MOhm-cm) to prevent membrane degradation. Water stress in arid regions constrains siting of large-scale green hydrogen projects in Chile, Australia, and the Middle East.
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1 essential American goods rely on purified water (for electrolysis) somewhere upstream in their supply chain.