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<p>Existing technologies for chlorine (Cl<sub>2</sub>) synthesis are generally suffered from low productivity or high production cost. Guided by Bernoulli’s principle, here we report an efficient yet cost-effective electrochemical system for Cl<sub>2</sub> electrosynthesis, which is composed of anodic chlorine evolution reaction (CER) connected to gas chamber by triple-phase gas diffusion layer. The key is to modulate gas diffusion layer by Bernoulli’s principle, wherein the pressure difference at triple-phase boundary drives oriented Cl<sub>2</sub> migration directly into gas chamber, thus preventing the crossover of anodic/cathodic products. By further joining with a pH-tolerant catalyst, a standalone prototype device is built for high-rate Cl<sub>2</sub> production, operating at the Faradaic efficiencies of 96.3% ~ 87.6% in the current density range of 0.1 ~ 1.14 A cm<sup>−2</sup>, having superior Cl<sub>2</sub> synthesis performance. Further technical-economic evaluations of our synthetic scheme demonstrate reduced Cl<sub>2</sub> production cost, saving 6.75% (1.17 million dollar per year) as comparison to conventional chlor-alkali design. We expect these findings offer broader opportunities to develop industrially production processes for other chemical commodities.</p>

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Bernoulli’s principle-mediated Cl2 electrosynthesis

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月24日

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  • Zhihao Nie,
  • Guoliang Xu,
  • Jingjing Duan,
  • Markus Antonietti,
  • Sheng Chen

摘要

Existing technologies for chlorine (Cl2) synthesis are generally suffered from low productivity or high production cost. Guided by Bernoulli’s principle, here we report an efficient yet cost-effective electrochemical system for Cl2 electrosynthesis, which is composed of anodic chlorine evolution reaction (CER) connected to gas chamber by triple-phase gas diffusion layer. The key is to modulate gas diffusion layer by Bernoulli’s principle, wherein the pressure difference at triple-phase boundary drives oriented Cl2 migration directly into gas chamber, thus preventing the crossover of anodic/cathodic products. By further joining with a pH-tolerant catalyst, a standalone prototype device is built for high-rate Cl2 production, operating at the Faradaic efficiencies of 96.3% ~ 87.6% in the current density range of 0.1 ~ 1.14 A cm−2, having superior Cl2 synthesis performance. Further technical-economic evaluations of our synthetic scheme demonstrate reduced Cl2 production cost, saving 6.75% (1.17 million dollar per year) as comparison to conventional chlor-alkali design. We expect these findings offer broader opportunities to develop industrially production processes for other chemical commodities.