Porous Co3O4 decorated nitrogen-doped graphene electrocatalysts for efficient bioelectricity generation in MFCs
Porous Co3O4 decorated nitrogen-doped graphene electrocatalysts for efficient bioelectricity generation in MFCs
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DOI：
10.1016/j.ijhydene.2018.04.074
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发表时间：
2018-05
影响因子：
7.2
通讯作者：
Liang Tan;Si-Jie Li;Xiao-Tong Wu;Nan Li;Zhao‐Qing Liu
中科院分区：
文献类型：
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作者：
Liang Tan;Si-Jie Li;Xiao-Tong Wu;Nan Li;Zhao‐Qing Liu
高性能、低成本、坚固耐用的氧还原反应(ORR)催化剂在微生物燃料电池(MFC)的发展中起着至关重要的作用。在本论文中，我们成功地合成了一种新型的纳米Co3O4(NPs)修饰的三维多孔结构的掺氮石墨烯(3DGN-Co3O4)，并将其应用于MFC中的ORR催化剂。3DGN-Co3O4作为碱性条件下的正极催化剂，由于具有三维多孔结构、高本征电导率和掺氮石墨烯与Co3O4NPs之间的协同效应，在碱性条件下具有显著的电化学性能和优异的循环稳定性。此外，基于3D GN-Co3O4阴极的MFC自组装提供了578M/m−2的高功率密度，甚至可以与商用的PT/C相媲美。
High-performance, low-cost, and robust oxygen reduction reaction (ORR) catalysts have played a very crucial role in the development of microbial fuel cells (MFCs). Herein, A novelin-situCo3O4nanoparticles (NPs) modified nitrogen-doped graphene with three-dimensional porous structure (3D GN-Co3O4) has been successfully synthesized and employed as an efficient ORR catalyst in MFCs. Benefiting from 3D porous architecture feature, highly intrinsic conductivity and synergistic effect between nitrogen-doped graphene and Co3O4NPs, the 3D GN-Co3O4as a cathode catalyst in alkaline condition realizes significantly enhanced electrochemical performance and outstanding cycling stability. Furthermore, the self-assembly of MFCs based on the 3D GN-Co3O4cathode offers a high power density of 578 ± 10 mW m−2, which is even comparable to the commercial Pt/C.