N-doped graphene coupled with Co nanoparticles as an efficient electrocatalyst for oxygen reduction in alkaline media
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- 作者：Geng Zhanga ; zhanggeng@mail.hzau.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Wangting Lub ; Feifei Caoa ; Zhidong Xiaoa ; Xinsheng Zhenga
- 关键词：Oxygen reduction reaction ; Noble metal-free electrocatalyst ; N-doped graphene ; Encapsulation ; Pyrolysis
- 刊名：Journal of Power Sources
- 出版年：2016
- 出版时间：20 January 2016
- 年：2016
- 卷：302
- 期：Complete
- 页码：114-125
- 全文大小：4291 K
文摘
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A noble metal-free electrocatalyst with high ORR activity was reported.
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The catalyst was prepared by a one-step pyrolysis of sucrose, urea and Co(NO3)2.
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The catalyst was in the form of N-doped graphene coupled with Co NPs.
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The synergistic effect between encased Co NPs and carbon shell is the key in ORR.
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High methanol-tolerance and stability was presented by the catalyst.