Boron-Induced Nitrogen Fixation in 3D Carbon Materials for Supercapacitors

Peng Sun; Jian Huang; Feng Xu; Jijian Xu; Tianquan Lin; Wei Zhao; Wujie Dong; Fuqiang Huang

doi:10.1021/acsami.0c02535

journal article·2020-06-24

Boron-Induced Nitrogen Fixation in 3D Carbon Materials for Supercapacitors

Peng Sun, Jian Huang, Feng Xu, Jijian Xu, Tianquan Lin, Wei Zhao, Wujie Dong, Fuqiang Huang

ACS Applied Materials & Interfaces· Volume 12· Issue 25

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Source abstract

Abstract

Nitrogen-rich carbon materials attract great attention because of their admirable performance in energy storage and electrocatalysis. However, their conductivity and nitrogen content are somehow contradictory because good conductivity requires high-temperature heat treatment, which decomposes most of the nitrogen species. Herein, we propose a facile method to solve this problem by introducing boron (B) to fix the nitrogen in a three-dimensional (3D) carbon material even at 1000 °C. Besides, this N-rich carbon material has a high content of pyrrolic nitrogen due to the selective stabilization of B, which is favorable in electrochemical reactions. Density functional theory (DFT) investigation demonstrates that B reduces the energy level of neighboring N species (especially pyrrolic nitrogen) in the graphene layer, making it difficult to escape. Thus, this carbon material simultaneously, achieves high conductivity (30 S cm^-1) and nitrogen content (7.80 atom %), thus showing an outstanding capacitance of 412 F g^-1 and excellent rate capability.

Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Energy storage Nanomaterials Catalysis & surfaces Materials processing

OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Electrocatalysts for Energy Conversion

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

Affiliations

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, P. R. China

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China

State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Chinese Academy of Sciences

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