先进锂离子电池负极用氮掺杂碳涂层SnO2纳米管

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Frontiers of Materials Science Pub Date : 2023-10-16 DOI:10.1007/s11706-023-0663-7

Junhai Wang, Jiandong Zheng, Liping Gao, Chunyu Meng, Jiarui Huang, Sang Woo Joo

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引用次数: 0

摘要

采用基于MoO3纳米棒的牺牲模板法、多巴胺聚合和煅烧工艺合成了n掺杂碳层的二氧化锡纳米管(SnO2/N-C NTs)。应用于锂离子电池中，SnO2/N-C纳米管表现出优异的电化学性能，在0.1 a·g−1下首次放电容量为1722.3 mAh·g−1,100次循环放电容量为1369.3 mAh·g−1。优异的电化学性能归因于n掺杂碳层和管状结构，有效提高了复合材料的导电性，加速了Li+和电子的迁移，并在一定程度上缓解了阳极的体积变化。

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SnO2 nanotubes with N-doped carbon coating for advanced Li-ion battery anodes

Tin dioxide nanotubes with N-doped carbon layer (SnO₂/N-C NTs) were synthesized through a MoO₃ nanorod-based sacrificial template method, dopamine polymerization and calcination process. Applied to the Li-ion battery, SnO₂/N-C NTs exhibited excellent electrochemical properties, with a first discharge capacity of 1722.3 mAh·g⁻¹ at 0.1 A·g⁻¹ and a high capacity of 1369.3 mAh·g⁻¹ over 100 cycles. The superior electrochemical performance is ascribed to the N-doped carbon layer and tubular structure, which effectively improves the electrical conductivity of the composites, accelerates the migration of Li⁺ and electrons, and alleviates the volume change of the anode to a certain extent.

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来源期刊

Frontiers of Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

3.70%

发文量

515

期刊介绍： Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community. The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to): Biomaterials including biomimetics and biomineralization; Nano materials; Polymers and composites; New metallic materials; Advanced ceramics; Materials modeling and computation; Frontier materials synthesis and characterization; Novel methods for materials manufacturing; Materials performance; Materials applications in energy, information and biotechnology.