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<p>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) electrosynthesis via the oxygen reduction reaction offers a sustainable alternative to the industrial anthraquinone process. However, the poor energy efficiency (EE) of current catalysts and systems hinders their industrial application. Here a techno-economic analysis indicates that this electrochemical process becomes economically viable if the EE exceeds 39% at a current density of 300 mA cm<sup>−2</sup>. Guided by theoretical calculations, we report a class of single-site catalysts with oxygen functional group-coordinated <i>p</i>-block main-group metals. We find that oxygen functional groups induce electron-deficient Sn sites via electronic interactions, optimizing the adsorption strength of key H<sub>2</sub>O<sub>2</sub> intermediates. Using the Sn<sub>1</sub>/C(O) as the cathodic catalyst in an electrolyser, an industrial current density of 300 mA cm<sup>−2</sup> is realized with an ultralow cell voltage of 1.17 V, achieving an EE of 43% and stability exceeding 200 h. This work contributes towards the industrial implementation and economic viability of large-scale electrochemical H<sub>2</sub>O<sub>2</sub> synthesis.</p><p></p>

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Industrial electrosynthesis of hydrogen peroxide over p-block metal single sites

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • Yu Gu,
  • Yingjun Tan,
  • Hao Tan,
  • Ying Han,
  • Dongfang Cheng,
  • Fangxu Lin,
  • Zhengyi Qian,
  • Lingyou Zeng,
  • Shipeng Zhang,
  • Ruijin Zeng,
  • Youxing Liu,
  • Hongyu Guo,
  • Mingchuan Luo,
  • Shaojun Guo

摘要

Hydrogen peroxide (H2O2) electrosynthesis via the oxygen reduction reaction offers a sustainable alternative to the industrial anthraquinone process. However, the poor energy efficiency (EE) of current catalysts and systems hinders their industrial application. Here a techno-economic analysis indicates that this electrochemical process becomes economically viable if the EE exceeds 39% at a current density of 300 mA cm−2. Guided by theoretical calculations, we report a class of single-site catalysts with oxygen functional group-coordinated p-block main-group metals. We find that oxygen functional groups induce electron-deficient Sn sites via electronic interactions, optimizing the adsorption strength of key H2O2 intermediates. Using the Sn1/C(O) as the cathodic catalyst in an electrolyser, an industrial current density of 300 mA cm−2 is realized with an ultralow cell voltage of 1.17 V, achieving an EE of 43% and stability exceeding 200 h. This work contributes towards the industrial implementation and economic viability of large-scale electrochemical H2O2 synthesis.