钴/氮共掺杂石墨烯复合材料制备及其氧还原性能研究  

Preparation of Co/N-doped graphene composites for oxygen reduction reaction

作　　者：张亚婷[1,2] 李思祎 贺新福 张娜娜[1] 李可可 林港[1] 段瑛峰 Zhang Ya-ting;Li Si-yi;He Xin-fu;Zhang Na-na;Li Ke-ke;Lin Gang;Duan Ying-feng(School of Chemistry and Chemical Engineering,Xi’an University of Science and Technology,Shanxi Xi'an 710054,China;Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Natural Resources,Shaanxi Xi'an 710021,China)

机构地区：[1]西安科技大学化学与化工学院,陕西西安710054 [2]自然资源部煤炭资源勘查与综合利用重点实验室,陕西西安710021

出　　处：《炭素技术》2022年第3期24-31,共8页Carbon Techniques

基　　金：国家自然科学基金(U1810113,U1203292);陕西省软科学研究计划(2019JLP-12,2019-TD-021)。

摘　　要：开发炭基氧还原反应(ORR)催化剂,以替代昂贵且不稳定的铂基催化剂,对其在能量转换和储存方面的应用具有重要意义。通过一种简单方法成功制得具有分级多孔结构和高比表面积(439 m^(2)/g)等特点的钴/氮共掺杂石墨烯复合材料(CoNDAC@CG)。进一步考察Co-NDAC@CG材料的氧还原性能可知,Co-NDAC@CG在碱性电解质中表现出较好的ORR活性(E=0.84 V,J=4.73 mA/cm^(2)),同时具有良好的电化学稳定性和抗甲醇性。The development of carbon-based oxygen reduction reaction(ORR)catalysts to replace the expensive and unstable platinum-based catalysts is of great significance for their optimal utilization in energy conversion and storage.In this study,a facile operation protocol is presented for constructing a cobalt and nitrogen codoped graphene hierarchical porous carbon material(denoted as Co-NDAC@CG),which has the characteristics of hierarchical porous structure and high surface area(439 m^(2)·g).Further investigation of the oxygen reduction performance of Co-NDAC@CG material shows that Co-NDAC@CG has excellent ORR activity in alkaline electrolyte(E=0.84 V,J=4.73 mA/cm^(2)),and exhibits outstanding electrochemical stability and methanol tolerance.

关 键 词：炭基材料 氧还原反应 电催化 N掺杂 

分 类 号：TB333[一般工业技术—材料科学与工程]