High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies
文献类型：期刊论文
| ; | |
| 作者 | Shen; Mengxia; Zheng LR(郑黎荣) ; Zheng; Li-Rong; He; Wenhui; Ruan; Changping; Jiang
|
| 刊名 | NANO ENERGY
 ; NANO ENERGY
|
| 出版日期 | 2015 ; 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 Catalysis Direct methanol fuel cell Non-precious metal catalyst Oxygen reduction reaction Self-assembly |
| ISSN号 | 2211-2855 |
| DOI | 10.1016/j.nanoen.2015.08.007 |
| 文献子类 | 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.; 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. |
| 学科主题 | Chemistry; Science & Technology - Other Topics; Materials Science; Physics ; Chemistry; Science & Technology - Other Topics; Materials Science; Physics |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 收录类别 | SCI ; EI |
| 电子版国际标准刊号 | 2211-3282 |
| WOS研究方向 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000366149000014 ; WOS:000366149000014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228905]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Shen,Mengxia,Zheng LR,et al. High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies, High-performance oxygen reduction electrocatalysts derived from uniform cobalt-adenine assemblies[J]. NANO ENERGY, NANO ENERGY,2015, 2015,17, 17:120-130, 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. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。