文献类型：会议

作　　者：云斯宁

作者单位：西安建筑科技大学,材料科学与工程学院功能材料研究所

会议文献：第九届新型太阳能材料科学与技术学术研讨会论文集

会议名称：第九届新型太阳能材料科学与技术学术研讨会

会议日期：20220507

会议地点：中国北京

出版日期：20220500

学会名称：中国科学院物理研究所清洁能源实验室

语　　种：中文

摘　　要：We developed successfully a series of metal-N-C catalyst by a simple chemical method, when metal-N-C materials(Co-N-C, Fe-N-C, Mn-N-C, Fe/Co-N-C, Mo/Co-N-C, Nb/Co-N-C, Bi/Co-N-C, Mn/Co-N-C, etc.,) were used as counter electrodes catalyst for dye sensitized solar cells, and they achieved higher power conversion efficiencies than that of Pt electrode under the same conditions. A PCE of 7.98% for Mo/Co-N-C;a PCE of 8.35% for Fe/Co-N-C;a PCE of 7.46% for Nb/Co-N-C;a PCE of 7.65% for Bi/Co-N-C, Pt(7.10%). We also successfully prepared single atom dispersed metal-NC catalysts that were applied into solar cells, and yield a higher PCE level than that of noble Pt electrode. The intrinsic catalytic mechanism of electrocatalysts is studied by insighting their electronic structures, work functions, bonding, and ion-adsorption behaviors, using first-principle DFT-calculations. We propose a general strategy for synthesizing a high-performance defect-rich carbon-based catalyst, and offers valuable insight into the role of magnetic metals in catalysis, which can be used to guide the design of high-performance catalysts in the energy field. These catalysts have been further applied in supercapacitors, hydrogen evolution generation, and anaerobic digestion, and the related mechanism has been clarified.

关 键 词：Dye-sensitized solar cells  Counter electrode  ZIF-8  ELECTROCATALYST DFT calculations  

分 类 号：TM914.4]