...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>New Journal of Chemistry >A non-traditional biomass-derived N, P, and S ternary self-doped 3D multichannel carbon ORR electrocatalyst
【24h】

A non-traditional biomass-derived N, P, and S ternary self-doped 3D multichannel carbon ORR electrocatalyst

机译：非传统生物质衍生的N，P和S三元自掺杂3D多通道碳矿石电催化剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The synthesis of high-efficiency and low-cost electrocatalysts for the oxygen reduction reaction (ORR) is currently one of the main targets for the commercialization of fuel cells. In this work, a non-traditional N (5.43%), P (0.71%), and S (0.30%) ternary self-doped 3D multichannel carbon ORR electrocatalyst derived from spinach leaves is synthesized for the first time, using one-step annealing technology. The as-synthesized electrocatalyst (S-850) successfully avoids the shortcomings of traditional biomass-derived catalysts, such as those posed by solid micron-sized blocks and a lack of heteroatomic species. The advantageous properties exhibited by the electrocatalyst are mainly attributed to loose mesophyll cell space, various plant proteins, and chlorophyll. Based on the unique multichannel porous structure and ternary heteroatom doping, S-850 exhibits a higher limiting diffusion current density of 5.19 mA cm(-2)at 0.5 V, and better durability and CO/methanol tolerance than commercial 20% Pt/C (5.10 mA cm(-2)at 0.5 V) in O-2-saturated 0.1 M KOH solution. This work also includes density functional theory (DFT) calculations, which further reveal the mechanism of N, P, and S ternary self-doping in the spinach-derived ORR catalysts. Considering the availability of spinach around the world, this spinach-derived carbon material may also be extended to other areas, such as supercapacitors, sensors, and metal-air batteries.
机译：高效率和低成本的电催化剂的氧还原反应（ORR）的合成是目前的用于燃料电池的商业化的主要目标之一。在这项工作中，非传统的N（5.43％），P（0.71％），和S（0.30％）从菠菜叶首次合成衍生的三元自掺杂3D多声道碳ORR电催化剂，使用一步法退火技术。所合成的电极催化剂（S-850）在成功避免了传统的源自生物质的催化剂，如那些由固体微米大小的块和缺乏杂原子的物种造成的缺点。由电催化剂所表现出的有利特性主要归因于松散叶肉细胞的空间，各种植物的蛋白质，和叶绿素。基于独特的多通道的多孔结构和三元杂原子掺杂，S-850展品5.19毫安厘米（-2）高的极限扩散电流密度在0.5 V，和更好的耐久性和CO /甲醇公差比商业20％的Pt / C（ 5.10毫安厘米（-2）在0.5 V）在O-2-饱和的0.1M KOH溶液。这项工作也包括密度泛函理论（DFT）计算，其进一步揭示的N，P的机构，和S的菠菜来源的ORR催化剂三元自掺杂。考虑到世界各地的菠菜的可用性，这菠菜来源的碳材料也可以被扩展到其他领域，如超级电容器，传感器，和金属 - 空气电池。

著录项

  • 来源
    《New Journal of Chemistry》 |2020年第34期|共11页
  • 作者

    Huang Nai-bao; Zhang Jun-jie; Sun Yin; Sun Xian-nian; Qiu Zhong-yu; Ge Xiao-wen;

  • 作者单位

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

    Dalian Maritime Univ Coll Transportat Engn Dalian 116026 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号