CAJ | 학술논문

开发低成本、高效的空气电极催化剂是发展锂空气电池的关键课题之一。采用邻菲咯啉(phen)为配体制备Co(phen)2配合物，负载于BP2000碳载体上，并分别在600、700、800和900°C的温度下进行热处理，制备得到碳支撑的Co-N催化剂(Co-N/C)。对催化剂的氧还原反应/析氧反应(ORR/OER)活性进行了表征，并且与典型的CoTMPP/C催化剂进行了比较。同时研究了煅烧温度对Co-N/C催化剂的组成和结构的影响。电化学测试结果表明，热处理温度为700-800°C时催化剂具有较好的电化学性能。 Co-N/C催化剂具有电化学性能优良与低成本的特点，是一种良好的锂氧气电池催化剂。
개발저성본、고효적공기전겁최화제시발전리공기전지적관건과제지일。채용린비각람(phen)위배체제비Co(phen)2배합물，부재우BP2000탄재체상，병분별재600、700、800화900°C적온도하진행열처리，제비득도탄지탱적Co-N최화제(Co-N/C)。대최화제적양환원반응/석양반응(ORR/OER)활성진행료표정，병차여전형적CoTMPP/C최화제진행료비교。동시연구료단소온도대Co-N/C최화제적조성화결구적영향。전화학측시결과표명，열처리온도위700-800°C시최화제구유교호적전화학성능。 Co-N/C최화제구유전화학성능우량여저성본적특점，시일충량호적리양기전지최화제。
The development of low-cost and effective electrocatalysts for air electrodes is critical for practical applications of lithium/oxygen batteries. In the present work, phenanthroline (phen) was used as a ligand to prepare a Co(phen)2 complex. The Co(phen)2 complex was coated on BP2000 and then heat treated at 600, 700, 800, and 900 °C, to obtain carbon-supported Co-N (Co-N/C) catalysts. The catalytic activities in oxygen reduction reaction/oxygen evolution reaction (ORR/OER) of the prepared catalysts were measured and compared with those of a typical carbon-supported cobalt tetramethoxyphenylporphyrin (CoTMPP/C) catalyst. The influence of the calcination temperature on the composition and structure of the Co-N/C catalysts was investigated. Electrochemical tests showed that the Co-N/C catalysts prepared at 700 and 800 °C gave better performances, comparable to that of the CoTMPP/C catalyst. The superior electrochemical performance of the prepared Co-N/C catalysts and the low cost of the phenanthroline chelating agent make Co-N/C a promising cheap catalyst for lithium/oxygen batteries.