用于高性能锂离子电池的 N、P 共掺硬碳阳极,具有更高的容量保持率和循环稳定性。

IF 3.5 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Penglun Zheng, Jing Wu, Haihan Zhao, Junwei Li, Zhihong Liu, Yun Zheng
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引用次数: 0

摘要

与传统的石墨负极相比,掺杂杂原子的聚合物碳材料因其高孔隙率和多孔结构而具有较高的容量保持率。因此,它们在锂离子电池(LIB)负极中有着巨大的应用潜力。本研究采用双酚 A(C 源)、三聚氰胺(N 源)和 9,10-二氢-9-氧杂-10-磷菲-10-氧化物(P 源),通过一锅法合成了 N、P 共掺聚合物前驱体材料(MBPp)。在不同的热解温度下,制备出了掺杂 N、P 的硬碳材料(MBPs),产生了微孔、中孔和大孔结构。MBP 材料作为 LIB 阳极具有优异的电化学性能。值得注意的是,MBP-900 在 1000 mA g-1 (0.005-2.0 V 电压范围内)的可逆容量为 262 mAh g-1,循环 1000 次后容量保持率为 97.2%。这些发现凸显了 MBP 材料在推动 LIB 聚合物阳极材料开发方面的重要意义,因为 MBP 材料具有大量缺陷、较大的层间隙和出色的循环稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
N, P co-Doped Hard Carbon Anodes for High-Performance Lithium-Ion Batteries with Enhanced Capacity Retention and Cycle Stability.

Compared to the traditional graphite anode, heteroatom-doped polymer carbon materials have high capacity retention due to their high porosity and porous structure. Therefore, they have great potential for application in lithium-ion battery (LIB) anodes. In this work, an N, P co-doped precursor polymer material (MBPp), synthesized via a one-pot method using bisphenol-A (C-source), melamine (N-source), and 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (P-source). The resulting N, P-co-doped hard carbon materials (MBPs) were prepared at various pyrolysis temperatures, yielding microporous, mesoporous, and macroporous structures. MBP materials demonstrated excellent electrochemical performance as LIB anodes. Notably, MBP-900 achieved a reversible capacity of 262 mAh g-1 at 1000 mA g-1 (in 0.005-2.0 V voltage range) with a capacity retention rate of 97.2% after 1000 cycles. These findings highlight the significance of MBP materials, which possess numerous defects, large layer gaps, and excellent cycle stability, in advancing the development of polymer anode materials for LIBs.

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来源期刊
Chemistry - An Asian Journal
Chemistry - An Asian Journal 化学-化学综合
CiteScore
7.00
自引率
2.40%
发文量
535
审稿时长
1.3 months
期刊介绍: Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).
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