DataVXAdvanced Materials InterfacesPaper
journal article·2022-05Open access

Polyhedral Carbon Anchored on Carbon Nanosheet with Abundant Atomic Fe‐Nx Moieties for Oxygen Reduction

Dong Liu, Chenxi Huyan, Yuanyuan Zhao, Terence Xiaoteng Liu, Ding Wang, Jining Sun, Sheng Dai, Fei Chen, Ben Bin Xu

Advanced Materials Interfaces· Volume 9· Issue 15
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Source abstract

Abstract

Abstract Carbon‐based single‐atom iron electrocatalysts with nitrogen coordination (CSAIN) have recently shown enormous promise to replace the costly Pt for boosting the cathodic oxygen reduction reaction (ORR) in fuel cells. However, there remains a great challenge to achieve highly efficient CSAIN catalysts for the ORR in acidic electrolytes. Herein, a novel CSAIN catalyst is synthesized by pyrolyzing a precursor mixture consisting of metal–organic framework and conductive polymer hybrid. After pyrolysis at a high temperature, the CSAIN with a structure of carbon nanosheet supported polyhedral carbon is achieved, where the unique structure endows CSAIN with expediting electron transfer and mass transport, as well as largely exposed surface to host atomically dispersed iron active sites. As a result, the optimal CSAIN catalyst shows a high ORR activity with its half‐wave potential of 0.77 V (vs RHE) and a Tafel slope of 74.1 mV dec–1, which are comparable to that of commercial Pt/C catalyst (0.80 V and 81.9 mV dec–1).
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Research context

Energy storagePolymersNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemical Engineering and Technology Xi'an Jiaotong University Xi'an 710049 P. R. China

The 41 ^{st} Institute of the Forth Academy China Aerospace Science and Technology Corporation Xi'an Shaanxi 710025 P. R. China

Mechanical and Construction Engineering Faculty of Engineering and Environment Northumbria University Newcastle upon Tyne NE1 8ST UK

Faculty of Engineering and Physical Sciences University of Southampton University Road Southampton SO17 1BJ UK

School of Mechanical Engineering Dalian University of Technology Dalian 116024 P. R. China

School of Chemical and Process Engineering University of Leeds Leeds LS2 9JT UK

Funding

China Postdoctoral Science Foundation · National Natural Science Foundation of China · Engineering and Physical Sciences Research Council

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