大气压冷等离子体制备石墨烯基贵金属电催化剂及其机理研究

针对高效燃料电池研发需求，在冷等离子体调控制备金属催化剂基础上，本项目拟开展大气压冷等离子体制备石墨烯基贵金属电催化剂及其机理研究工作。首先，采用大气压冷等离子体处理石墨烯基材料，重点研究等离子体对石墨烯剥离、氮掺杂、刻蚀、缺陷和含氧官能团的影响，通过系统实验研究，建立等离子体对石墨烯的活性面积、边缘缺陷、空位及平面内掺杂和功能化的调控规律。通过发射光谱原位诊断，傅里叶变换红外光谱和质谱等在线分析，以及其他离线表征技术，揭示大气压冷等离子体处理石墨烯机理。其次，以等离子体处理石墨烯为载体，采用大气压冷等离子体制备石墨烯基贵金属电催化剂，结合密度泛函理论计算，建立结构调控规律并探明构效关系。最后，基于以上研究，开展大气压冷等离子体一步制备高性能石墨烯基贵金属电催化剂研究。该项目顺利开展将制备出高性能石墨烯基贵金属电催化剂，并为基于等离子体处理的二维材料及应用提供实验基础和理论依据。

To meet the research and development requirements of high-efficiency fuel cells, this project intends to carry out the research on preparation of graphene-based noble metal electrocatalysts by atmospheric-pressure (AP) cold plasma and its mechanism, based on our previous research on controllable synthesis of metal catalysts by cold plasma. First of all, AP cold plasma will be adopted to process the graphene-based materials. The emphasis will be focused on the plasma effects on exfoliation, nitrogen doping, etching, defects and oxygen-containing functional groups of graphene. Through systematic experimental study, the regulation rules of active area, edge defect, vacancy, in-plane doping and functionalization of graphene by AP cold plasma will be established. Through in situ optical emission spectroscopy (OES), online analysis techniques such as Fourier transform infrared spectroscopy (FTIR) and mass spectrometry (MS), and other offline characterization techniques, the AP cold plasma treatment mechanism of graphene will be disclosed. Secondly, AP cold plasma will be used to prepare graphene-based supported noble metal catalysts using the plasma-treated graphene as support. Combined with the density functional theory (DFT), the structure regulation rule will be established, and the structure-property relationship will be disclosed. Finally, based on the above research, one-step preparation of high-performance graphene-based noble metal electrocatalysts by AP cold plasma will be conducted. The successful implementation of this project will prepare high-performance graphene-based noble metal electrocatalysts and provide experimental and theoretical support for the preparation and application of two-dimensional materials based on plasma treatment.