High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies
Shen; Mengxia; Zheng LR(郑黎荣); Zheng; Li-Rong; He; Wenhui; Ruan; Changping; Jiang; Chunhuan; Ai; Kelong; Lu; Lehui
刊名NANO ENERGY
2015
卷号17页码:120-130
关键词Catalysis Direct methanol fuel cell Non-precious metal catalyst Oxygen reduction reaction Self-assembly
学科分类Chemistry; Science & Technology - Other Topics; Materials Science; Physics
DOI10.1016/j.nanoen.2015.08.007
文章类型Article
英文摘要Enhancing the catalytic activity of non-precious metal catalysts (NPMCs) for oxygen reduction reaction (ORR) requires determination of active centers and a better understanding of the structure-activity relationship. However, key technical challenges in controlling the structural uniformity of NPMCs and maximizing the number of exposed active sites make this goal hard to achieve. Here, inspired by the facile self-assembly strategy for DNA metallization, we have fabricated Co-adenine nanoconnposite spheres (Co-A NSs) with uniform structures and well-recognized Co-N-4 configuration. Direct pyrolysis of Co-A NSs leads to the formation of monodisperse rambutan-like Co-N/C composites with high porosity and degree of graphitization, as well as homogeneous and high-density Co-N active sites, which endow them with excellent ORR catalytic activity in both base and acid conditions. With Co-N/C as the cathode catalyst, the assembled alkaline direct methanol fuel cell (ADMFC) generates extremely high open-circuit voltage (0.80 V) and unprecedentedly high maximum output power density (40.1 mW cm(-2)), which is successfully utilized to illuminate a light-emitting diode (LED) lantern. Moreover, the easily controlled structure of Co-N/C catalysts enables us to further reveal their structure-activity relationship, which may provide guidance for future design of advanced electrocatalysts. (C) 2015 Elsevier Ltd. All rights reserved.
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
收录类别SCI ; EI
WOS记录号WOS:000366149000014
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被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228905
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Shen,Mengxia,Zheng LR,et al. High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies[J]. NANO ENERGY,2015,17:120-130.
APA Shen.,Mengxia.,郑黎荣.,Zheng.,Li-Rong.,...&Lehui.(2015).High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies.NANO ENERGY,17,120-130.
MLA Shen,et al."High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies".NANO ENERGY 17(2015):120-130.
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