In Situ Coupling Strategy for the Preparation of FeCo Alloys and Co4N Hybrid for Highly Efficient Oxygen Evolution

Zhu, Xiang; Jin, Tian; Tian, Chengcheng; Lu, Chenbao; Liu, Xiaoming; Zeng, Min; Zhuang, Xiaodong; Yang, Shize; He, Lin; Liu, Honglai; Dai, Sheng

doi:10.1002/adma.201704091

In Situ Coupling Strategy for the Preparation of FeCo Alloys and Co₄N Hybrid for Highly Efficient Oxygen Evolution

Journal Article · Wed Oct 25 04:00:00 EDT 2017 · Advanced Materials

DOI:https://doi.org/10.1002/adma.201704091· OSTI ID:1462887

^[1]; Jin, Tian ^[2]; Tian, Chengcheng ^[1]; Lu, Chenbao ^[3]; ^[4]; Zeng, Min ^[5]; Zhuang, Xiaodong ^[3]; ^[4]; He, Lin ^[5]; Liu, Honglai ^[6]; ^[7]

The Univ. of Tennessee, Knoxville, TN (United States)
The Univ. of Tennessee, Knoxville, TN (United States); East China Univ. of Science and Technology, Shanghai (China)
Shanghai Jiao Tong Univ. Shanghai (China)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Chinese Academy of Sciences, Lanzhou (China)
East China Univ. of Science and Technology, Shanghai (China)
The Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

An in situ coupling approach is developed to create a new highly efficient and durable cobalt-based electrocatalyst for the oxygen evolution reaction (OER). Using a novel cyclotetramerization, a task-specific bimetallic phthalocyanine-based nanoporous organic framework is successfully built as a precursor for the carbonization synthesis of a nonprecious OER electrocatalyst. The resultant material exhibits an excellent OER activity with a low overpotential of 280 mV at a current density of 10 mA cm^–2 and high durability in an alkaline medium. This impressive result ranks among the best from known Co-based OER catalysts under the same conditions. The simultaneous installation of multiple diverse cobalt-based active sites, including FeCo alloys and Co₄N nanoparticles, plays a critical role in achieving this promising OER performance. Lastly, this innovative approach not only enables high-performance OER activity to be achieved but simultaneously provides a means to control the surface features, thereby tuning the catalytic property of the material.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1462887

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 47 Vol. 29; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
FeCo alloy nanoparticles
cobalt nitride
cyclotetramerization
in situ coupling
oxygen evolution reaction