Efficient bubble/precipitate traffic enables stable seawater reduction electrocatalysis at industrial-level current densities.

ABSTRACT: Seawater electroreduction is attractive for future H₂ production and intermittent energy storage, which has been hindered by aggressive Mg²⁺/Ca²⁺ precipitation at cathodes and consequent poor stability. Here we present a vital microscopic bubble/precipitate traffic system (MBPTS) by constructing honeycomb-type 3D cathodes for robust anti-precipitation seawater reduction (SR), which massively/uniformly release small-sized H₂ bubbles to almost every corner of the cathode to repel Mg²⁺/Ca²⁺ precipitates without a break. Noticeably, the optimal cathode with built-in MBPTS not only enables state-of-the-art alkaline SR performance (1000-h stable operation at -1 A cm^-2) but also is highly specialized in catalytically spl

SUBMITTER: Liang J 

PROVIDER: S-EPMC10997793 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature