MOF衍生的花状高效氧还原性的Co_(3)O_(4)@NC制备  

MOF-derived Co_(3)O_(4)@NC with flowerlike structure for efficient oxygen reduction reaction

作　　者：王春玲[1] 王伟涛[2] Wang Chun-ling;Wang Wei-tao(Department of Aeronautical Engineering,Aeronautical Polytechnic Institute,Shaanxi Xi’an 710089,China;College of Chemistry&Chemical Engineering,Shaanxi University of Science&Technology,Shaanxi Xi'an 710021,China)

机构地区：[1]西安航空职业技术学院航空制造工程学院,陕西西安710089 [2]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《炭素技术》2021年第1期28-30,36,共4页Carbon Techniques

基　　金：国家自然基金(5130220,516320075和16722185);陕西省自然基金(2019JM-080);陕西省教育厅科研计划项目(18JK0413);西安航空职业技术学院(18XHZY-019)。

摘　　要：设计价格低廉高性能的氧还原催化剂对于能量的转化和存储具有重要的意义。采用简单的炭化和氧化两步法对于ZIF-67前驱体进行处理合成Co_(3)O_(4)@NC。结果表明,Co_(3)O_(4)@NC具有花状结构,且具有良好的氧还原性能,起始正电压为0.90V,半波电位为0.81 V。此外,Co_(3)O_(4)@NC保持良好的氧化还原稳定性。Design and synthesis of highly effective catalysts for electrochemical ORR with low cost is of great significance for energy conversion and storage.Here,MOF-derived nitrogen-doped carbon/Co_(3)O_(4)(Co_(3)O_(4)@NCs)material with flowerlike structures as an efficient electrocatalyst for oxygen reduction reaction is reported,which is fabricated by a two-step pyrolysis-oxidation strategy with a MOF(ZIF-67)as precursor.The results show that the Co_(3)O_(4)@NC owns positive onset potential of 0.90 V(vs.RHE)and half-wave potential of 0.81 V(vs.RHE).Additionally,Co_(3)O_(4)@NC presents enhanced catalytic activity and stability for ORR.

关 键 词：Co_(3)O_(4)@NC 氧还原反应 电催化剂 稳定性 

分 类 号：O643.36[理学—物理化学] TQ116.14[理学—化学]