Ping Xinyu, Xue Yurui, Wu Han, Chen Siao, Chen Siyi, Gao Yang, Li Yuliang
CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
Natl Sci Rev. 2025 May 2;12(7):nwaf177. doi: 10.1093/nsr/nwaf177. eCollection 2025 Jul.
Controlled selective growth of an interface with high-density active sites is the key to constructing efficient and long-term stable proton exchange membrane water electrolysis, which can effectively promote an acidic oxygen evolution reaction. Herein, a 2D all-carbon graphdiyne (GDY) is used as an ideal support to grow a new generated interface of RuO /GDY and finally to achieve the directed and controlled production of high-density Ru atom defects. The metal atom defect-rich interface not only afforded high intrinsic activity by facilitating the adsorption/desorption ability of reaction intermediates, but also enhanced structural stability by forming interfacial chemical bonds. RuO /GDY shows a small overpotential of 157 mV at 10 mA cm and 100 h of stability in acidic electrolyte. The proton exchange membrane water electrolyser when using RuO /GDY as the anodic catalyst only requires 1.47 V to achieve 1000 mA cm and the estimated cost of hydrogen production is US $0.78 kg H.
控制选择性生长具有高密度活性位点的界面是构建高效且长期稳定的质子交换膜水电解的关键，这能够有效促进酸性析氧反应。在此，二维全碳石墨炔（GDY）被用作理想载体，以生长RuO /GDY的新生成界面，并最终实现高密度Ru原子缺陷的定向可控生成。富含金属原子缺陷的界面不仅通过促进反应中间体的吸附/解吸能力提供了高本征活性，还通过形成界面化学键增强了结构稳定性。RuO /GDY在酸性电解质中于10 mA cm时显示出157 mV的小过电位以及100小时的稳定性。当使用RuO /GDY作为阳极催化剂时，质子交换膜水电解槽仅需1.47 V即可达到1000 mA cm，且估计制氢成本为0.78美元/千克H。
