N, P co‐doped hierarchical porous graphene as a metal‐free bifunctional air cathode for Zn − air batteries

N, P co‐doped hierarchical porous graphene as a metal‐free bifunctional air cathode for Zn − air batteries

The development of high‐efficiency Zn−air batteries represents one of the emerging energy storage and conversion technologies. In this work, hierarchically structured N, P co‐doped graphene (NPHG) has been synthesized through the chemical polymerization of aniline and phytic acid in the presence of...

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Bibliographic Details
Main Authors: Zhou, Lijun, Zhang, Chunyan, Cai, Xiaoyi, Qian, Yao, Jiang, Haifeng, Li, Baosheng, Lai, Linfei, Shen, Zexiang, Huang, Wei
Other Authors: Energy Research Institute @ NTU (ERI@N)
Format: Article
Language:English
Published: 2020
Subjects:
Science::Chemistry
Zn-air Battery
Graphene
Online Access:https://hdl.handle.net/10356/139719
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Institution: Nanyang Technological University
Language: English
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Summary:The development of high‐efficiency Zn−air batteries represents one of the emerging energy storage and conversion technologies. In this work, hierarchically structured N, P co‐doped graphene (NPHG) has been synthesized through the chemical polymerization of aniline and phytic acid in the presence of SiO2 nanoparticles and applied as air cathodes for rechargeable Zn−air batteries, owing to its high bifunctional oxygen electrocatalytic activities. The P−N bond, rather than P−C or P=N bonds, in NPHG is proposed to be responsible for the high catalytic activity. The rechargeable Zn−air batteries assembled from this NPHG exhibited much higher reversibility and better stability as compared with a benchmark Pt/C catalyst.

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