Defect-rich boron doped carbon nanotubes as an electrocatalyst for hybrid Li–air batteries

文献信息

发布日期 2021-11-19
DOI 10.1039/D1CY01832A
影响因子 6.119
作者

Yuyang Wang, Mingfu Yu, Tianyu Zhang, Zhichao Xue, Ying Ma, Hong Sun


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摘要

Carbon nanotubes (CNTs) have been used as a cathode material for hybrid Li–air batteries (HLABs); however, their catalytic abilities for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are relatively limited. Herein, to improve their catalytic performance, we have synthesized a boron-doped CNT (BC3NT) with varying boron contents. The Raman spectrum proves that the more defects are due to the higher boron content. And HLABs based on BC3NT show great cyclability and catalytic performance in air, with an overpotential value of 0.3 V for 200 hours at a current density of 0.05 mA cm−2. Furthermore, theoretical calculations with density functional theory (DFT) confirm the effects of topological defects of BC3NT on the ORR and OER. Since boron is doped into the CNT, BC3NT containing a large amount of defect rings is obtained. And the generation of defects was conducive to the battery reaction. Accordingly, as a positive electrode material for HLABs, BC3NT is more conducive to the ORR and OER, and the topological defect ring generated by it improved the ORR and OER performance.

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来源期刊

Catalysis Science & Technology

Catalysis Science & Technology
CiteScore: 5.91
自引率: 4.5%
年发文量: 600

Catalysis Science & Technology is committed to publishing research reporting high-quality, cutting-edge developments across the catalysis community at large. The journal places equal focus on publications from the heterogeneous, homogeneous, thermo-, electro-, photo-, organo- and biocatalysis communities. Works published in the journal feature a balanced mix of fundamental, technology-oriented, experimental, computational, digital and data-driven original research, thus appealing to catalysis practitioners in both academic and industrial environments. Original research articles published in the journal must demonstrate new catalytic discoveries and/or methodological advances that represent a significant advance on previously published work, from the molecular to the process scales. We welcome rigorous research in a wide range of timely or emerging applications related to the environment, health, energy and materials. Catalysis Science & Technology publishes Communications, Articles, Reviews and Perspectives. More details regarding manuscript types may be found in the Information for Authors section.

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