DataVXACS Applied Nano MaterialsPaper
journal article·2020-01-24

Iron-Containing Porphyrins Self-Assembled on ZnO Nanoparticles as Electrocatalytic Materials for Oxygen Reduction

Jia Li, Xiang Zhu, Jianyu Wang, Zhiyan Rui, Shiqiao Zhang, Yuxin Li, Rui Ding, Wenxiang He, Jianguo Liu, Zhigang Zou

ACS Applied Nano Materials· Volume 3· Issue 1
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Source abstract

Abstract

Nonprecious metal electrocatalysts (NPMEs) have been recognized as highly promising oxygen electroreduction catalysts, but improving their activity and stability in acidic electrolyte remains critical. Here, we integrated self-assembly technology induced by rotary evaporation with the hard-template method to synthesize Fe–N-codoped NPMEs with large specific surface areas and hierarchical pore structure. The presence of Fe3+ assisted complete removal of the ZnO hard template at a relatively low temperature, which is beneficial for both the in situ growth of micropores/mesopores within the carbon layers and the retention of more nitrogen-containing groups. The obtained Fe–N–C/ZnO porous carbon material exhibited outstanding oxygen reduction reaction catalytic activity, along with respectable electrochemical stability in a perchloric acid electrolyte. Applied in fuel cells, the electrocatalyst loading was reduced to 2.0 mg/cm2 because of increased mass transfer arising from the hierarchical porous structure and resulting in a power density of 700 mW/cm2.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterialsCatalysis & 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

Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, China

Kunshan Innovation Institute of Nanjing University and Kunshan Sunlaite New Energy Company, Ltd., 1699 South Zuchongzhi Road, Suzhou 215347, China

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · Natural Science Foundation of Jiangsu Province · Government of Jiangsu Province · Nanjing University · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Liaoning Province

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