材料科学
铝
阴极
电池(电)
甲醇
对偶(语法数字)
氮气
兴奋剂
燃料电池
化学工程
冶金
光电子学
电气工程
功率(物理)
有机化学
化学
艺术
工程类
文学类
物理
量子力学
作者
Kousik Bhunia,Jun Ho Seok,Muthukumar Perumalsamy,Keyru Serbara Bejigo,Vijaykumar Elumalai,Sang Uck Lee,Sang‐Jae Kim
出处
期刊:Nano Energy
[Elsevier]
日期:2024-07-01
卷期号:: 109966-109966
标识
DOI:10.1016/j.nanoen.2024.109966
摘要
A noble metal-free atomically dispersed dual metal (Fe and Mn) anchored nitrogen (N)-doped reduced graphene oxide (rGO) is synthesized as a high-performance oxygen reduction reaction (ORR) electrocatalyst for alkaline direct methanol fuel cell and aluminium-air battery (AAB). The as-synthesized FeMn-NrGO catalyst exhibits a half-wave potential of 0.84 V for ORR and a low onset potential of 0.96 Vvs (RHE). The theoretical study reveals that the synergetic coupling of Mn and Fe with pyridinic and pyrrolic nitrogen weakening adsorption bond strength of the O* intermediates to the active site of the catalyst, thereby improving the for ORR performance. The synthesized Fe3Mn1-NrGO cathode catalyst assembled alkaline direct methanol fuel cell (DMFC) demonstrates a peak power density of 65 mW/cm2 extending an effective strategy to enhance the ORR kinetics of the non-noble metal-based catalyst for fuel cell application. Furthermore, the synthesized Fe3Mn1-NrGO also exhibits excellent ORR activity in 3.5 wt% NaCl solution and demonstrates a peak power density of 11.2 mW/cm2 aqueous NaCl electrolyte-based AAB system.
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