首页|Heteroatom anchors Fe-Mn dual-atom catalysts with bi-functional oxygen catalytic activity for low-temperature rechargeable flexible Zn-air batteries

Heteroatom anchors Fe-Mn dual-atom catalysts with bi-functional oxygen catalytic activity for low-temperature rechargeable flexible Zn-air batteries

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
M-N-C(M=Fe,Co,Ni,etc.)catalyst owns high catalytic activity in the oxygen catalytic reaction which is the most likely to replace the Pt-based catalysts.But it is still a challenge to further increase the active site density.This article constructs the high-efficiency FeMn-N/S-C-1000 catalyst to realize ORR/OER bifunctional catalysis by hetero-atom,bimetal(Fe,Mn)doped simultaneously strategy.When evaluated it as bi-functional electro-catalysts,FeMn-N/S-C-1000 exhibits excellent catalytic activity(E1/2=0.924 V,Ej=10=1.617 V)in alkaline media,outperforms conventional Pt/C,RuO2 and most non-precious-metal cat-alysts reported recently.Such outstanding performance is owing to N,S co-coordinated with metal to form multi-types of single atom,dual atom active sites to carry out bi-catalysis.Importantly,nitrite poi-son test provides the proof that the active sites of FeMn-N/S-C are more than that of single-atom catalysts to promote catalytic reactions directly.To better understand the local structure of Fe and Mn active sites,XAS and DFT were employed to reveal that FeMn-N5/S-C site plays the key role during catalysis.Notably,the FeMn-N/S-C-1000 based low-temperature rechargeable flexible Zn-air also exhibits superior dis-charge performance and extraordinary durability at-40 ℃.This work will provide a new idea to design diatomic catalysts applied in low-temperature rechargeable batteries.

FeMn-N/S-C-1000ORROERRechargeable flexible Zn-air batteries

Yuting He、Hongtao Li、Yi Wang、Yufei Jia、Yongning Liu、Qiang Tan

展开 >

State Key Laboratory for Mechanical Behaviour of Materials,School of Materials Science & Engineering,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China

国家自然科学基金Basic Research Foundation of Xi'an Jiaotong Universityinstrument analysis center of Xi'an Jiaotong University for material structure characterization,including XPS and Raman and

21603171xjh012020027

2024

10.1016/j.jechem.2023.10.061

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.90(3)
  • 84