Nitrogen-doped lignin mesoporous carbon/nickel/oxide nanocomposites with excellent lithium storage properties

IF 9.6 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Ping-Xian Feng, Qi-Liang Chen, Dong-Jie Yang, Huan Wang
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引用次数: 0

Abstract

Developing high-capacity carbon-based anode materials is crucial for enhancing the performance of lithium-ion batteries (LIBs). In this study, we presented a nitrogen-doped lignin mesoporous carbon/nickel/nickel oxide (NHMC/Ni/NiO) nanocomposite for developing high-capacity LIBs anode materials through carbonization and selective etching strategies. The synthesized NMHC/Ni/NiO-0.33 composite exhibited a highly regular microstructure with well-dispersed Ni/NiO particles. The composite had a surface area of 408 m2⋅g−1, a mesopore ratio of 75.0%, and a pyridine–nitrogen ratio of 58.9%. The introduction of nitrogen atoms reduced the disordered structure of lignin mesoporous carbon and enhanced its electrical conductivity, thus improving the lithium storage capabilities of the composite. Following 100 cycles at a current density of 0.2 A⋅g−1, the composite demonstrated enhanced Coulomb efficiency and rate performance, achieving a specific discharge capacity of 1230.9 mAh⋅g−1. At a high-current density of 1 A⋅g−1, the composite exhibited an excellent specific discharge capacity of 714.6 mAh⋅g−1. This study presents an innovative method for synthesizing high-performance anode materials of LIBs.

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来源期刊
Rare Metals
Rare Metals 工程技术-材料科学:综合
CiteScore
12.10
自引率
12.50%
发文量
2919
审稿时长
2.7 months
期刊介绍: Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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