燃料电池产能-原位制备H2O2一体化系统利用燃料电池作为反应器，通过阴极2e氧还原反应（ORR）原位制备H2O2，同时对外输出电能，其发展和实际应用的瓶颈在于高效催化2eORR材料的研发。本项目围绕开发新型、高效光电催化2eORR电极材料而展开研究，拟以具有可见光响应的p型半导体聚三噻吩（pTTh）材料为基体，采用“pTTh设计合成-掺杂调控-助催化剂复合”的技术路线，通过调控掺杂元素N、P、O的组分及构型改善pTTh的电荷分离效率和导电性，进而复合碳量子点（CQDs）助催化剂加速电荷转移以改善催化动力学过程；创新采用超快时间分辨瞬态吸收光谱技术，深入探究电极表面的电荷转移过程；揭示电极的组成、结构与其光电催化性能的内在关联，阐明光电催化反应机理，以期获得高性能的光电阴极材料。本项目成果为一体化电能与H2O2共生系统提供关键材料支撑和技术支持。

An integrated system based on fuel cell to generate electricity-in situ synthesize hydrogen peroxide is that using fuel cell as reactor, hydrogen peroxide can be in-situ prepared by cathodic 2e ORR, simultaneously outputting electric energy. The key to its development and real application lies on the research and development of high-efficient catalytic materials of 2e ORR . The present proposal focuses on the development of novel, high-efficient photoelectrocatalytic 2e ORR electrode materials, choosing p-type semiconductor polyterthiophene (pTTh) with visible light response as the basement, adopting “pTTh design and synthesis-doping control-cocatalyst complex” as technical route, improving the charge separation efficiency and conductivity of pTTh by adjusting the compositions and configurations of doped N, P, O elements, accelerating the charge transfer process of pTTh surface by reuniting with carbon quantum dots cocatalysts, further enhancing the catalytic kinetics, deeply exploring the charge transfer process on the electrode surface via innovatively adopting ultrafast time-resolved transient adsorption spectroscopy technology, revealing the intrinsic relationships between the compositions and structures of the electrode and its photoelectrocatalytic performance, elucidating the mechanism of photoelectrocatalytic reaction, aiming at obtaining the photoelectrical cathodic material with outstanding performance. Through the project, it is expected to provide both key materials and technical support for the integrated system with electricity and H2O2 co-generation.