It is highly desired for the development of efficient bifunctional electrocatalyst for both oxygen reduction reaction （ORR） and oxygen evolution reaction （OER） in renewable energy technologies. In this work, cobal...It is highly desired for the development of efficient bifunctional electrocatalyst for both oxygen reduction reaction （ORR） and oxygen evolution reaction （OER） in renewable energy technologies. In this work, cobalt, nitrogen-codoped carbon was prepared by a facile one-step method and demonstrated to exhibit good elec- trocatalytic performance for ORR and OER via a complete four-electron process. Besides, the catalyst prepared at 900 ℃ also displayed excellent stability for both ORR and OER. Furthermore, the origin of catalytic activity was also explored, which was attributed to the synergistic effects of metallic Co and quaternary N.展开更多
The concentric cable of cobalt nanowires(nanotubes) encapsulated in carbon nanotubes has been prepared by using “ second order template” method, combined with electrodeposition. The products were characterized by SE...The concentric cable of cobalt nanowires(nanotubes) encapsulated in carbon nanotubes has been prepared by using “ second order template” method, combined with electrodeposition. The products were characterized by SEM, TEM, XRD and Raman, respectively. The C/Co composite nanowires(nanotubes) were about 60μ m in length, and the thickness can be adjusted by changing the reaction conditions. This method could be extended to construct an array of multi layer nanotubes, composed of various metals, encapsulated in carbon nanotubes.展开更多
基金supported by the National Basic Research Program of China (2012CB825803, 2013CB932702)the National Natural Science Foundation of China (51422207, 51132006,51572179, 21471106, and 21501126)+2 种基金the Specialized Research Fund for the Doctoral Program of Higher Education (20123201110018)a Suzhou Planning Project of Science and Technology (ZXG2012028)the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
文摘It is highly desired for the development of efficient bifunctional electrocatalyst for both oxygen reduction reaction （ORR） and oxygen evolution reaction （OER） in renewable energy technologies. In this work, cobalt, nitrogen-codoped carbon was prepared by a facile one-step method and demonstrated to exhibit good elec- trocatalytic performance for ORR and OER via a complete four-electron process. Besides, the catalyst prepared at 900 ℃ also displayed excellent stability for both ORR and OER. Furthermore, the origin of catalytic activity was also explored, which was attributed to the synergistic effects of metallic Co and quaternary N.
文摘The concentric cable of cobalt nanowires(nanotubes) encapsulated in carbon nanotubes has been prepared by using “ second order template” method, combined with electrodeposition. The products were characterized by SEM, TEM, XRD and Raman, respectively. The C/Co composite nanowires(nanotubes) were about 60μ m in length, and the thickness can be adjusted by changing the reaction conditions. This method could be extended to construct an array of multi layer nanotubes, composed of various metals, encapsulated in carbon nanotubes.
