您的位置: 专家智库 > >

李旭宁

作品数:1 被引量:0H指数:0
供职机构:中国科学院大连化学物理研究所更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
相关领域:理学电气工程更多>>

文献类型

  • 1篇中文期刊文章

领域

  • 1篇电气工程
  • 1篇理学

主题

  • 1篇CARBON
  • 1篇CATALY...
  • 1篇FE
  • 1篇HIGHLY
  • 1篇IRON
  • 1篇N-C

机构

  • 1篇中国科学院
  • 1篇中国科学院大...

作者

  • 1篇姜鲁华
  • 1篇孙公权
  • 1篇王军虎
  • 1篇谷领峥
  • 1篇金具涛
  • 1篇李旭宁

传媒

  • 1篇Chines...

年份

  • 1篇2016
1 条 记 录,以下是 1-1
排序方式:
A Fe-N-C catalyst with highly dispersed iron in carbon for oxygen reduction reaction and its application in direct methanol fuel cells
2016年
Exploring non‐precious metal catalysts for the oxygen reduction reaction (ORR) is essential for fuel cells and metal–air batteries. Herein, we report a Fe‐N‐C catalyst possessing a high specific surface area (1501 m2/g) and uniformly dispersed iron within a carbon matrix prepared via a two‐step pyrolysis process. The Fe‐N‐C catalyst exhibits excellent ORR activity in 0.1 mol/L NaOH electrolyte (onset potential, Eo=1.08 V and half wave potential, E1/2=0.88 V vs. reversible hydrogen electrode) and 0.1 mol/L HClO4 electrolyte (Eo=0.85 V and E1/2=0.75 V vs. reversible hydrogen electrode). The direct methanol fuel cells employing Fe‐N‐C as the cathodic catalyst displayed promising per‐formance with a maximum power density of 33 mW/cm2 in alkaline media and 47 mW/cm2 in acidic media. The detailed investigation on the composition–structure–performance relationship by X‐ray diffraction, X‐ray photoelectron spectroscopy and Mo-ssbauer spectroscopy suggests that Fe‐N4, together with graphitic‐N and pyridinic‐N are the active ORR components. The promising direct methanol fuel cell performance displayed by the Fe‐N‐C catalyst is related to the intrinsic high catalytic activity, and critically for this application, to the high methanol tolerance.
谷领峥姜鲁华李旭宁金具涛王军虎孙公权
共1页<1>
聚类工具0