用于电容式去离子和锂硫电池的聚吡咯纳米带衍生纳米结构多孔碳

IF 2.6 4区 化学 Q3 POLYMER SCIENCE
Quanqi Zhang, Kanglong Shi, Chuan Sun, Wen Wen, Shuai Han, Qing-Chao Zhao, Yongpeng Li, Zhuyin Sui
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引用次数: 0

摘要

纳米结构多孔碳具有高比表面积、丰富的孔隙结构、优异的导电性和化学稳定性,已成为电容式去离子和锂硫电池等先进能源利用技术的优良电极材料。在这项工作中,通过控制吡咯氧化聚合过程中氧化剂的浓度和表面活性剂的添加量,可以调节聚吡咯的形貌和尺寸。通过蒸汽活化聚吡咯颗粒和纳米带,成功制备出了形态可控的纳米结构多孔碳。在电容去离子实验中,合成的纳米结构碳纳米带(NCNR)因其丰富的孔隙结构和较大的比表面积(1258 m2 g-1)而表现出优异的电化学性能。在 500 mg L-1 的 NaCl 溶液中,它在 1.2 V 下的电吸附容量为 12.9 mg g-1。此外,当 NCNR 用作锂硫电池中硫的宿主材料时,它的放电容量显著提高,循环稳定性极佳(在 0.5 C 的速率下循环 200 次后,容量保持在 672 mA h g-1),为解决锂硫电池容量衰减问题提供了新思路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanostructured porous carbon derived from polypyrrole nanoribbons for capacitive deionization and lithium–sulfur batteries

Nanostructured porous carbons, with its high specific surface area, rich pore structure, excellent conductivity and chemical stability, have become an excellent electrode material in advanced energy utilization technologies such as capacitive deionization and lithium–sulfur batteries. In this work, by controlling the concentration of oxidants and the addition of surfactants during the oxidative polymerization of pyrrole, the morphology and size of polypyrrole can be regulated. Nanostructured porous carbons with controllable morphology were successfully prepared by steam activation of polypyrrole particles and nanoribbons. In capacitive deionization experiment, the synthesized nanostructured carbon nanoribbon (NCNR) exhibits excellent electrochemical properties due to their rich pore structure and large surface area (1258 m2 g–1). In a 500 mg L–1 NaCl solution, it has an electrosorption capacity of 12.9 mg g–1 at 1.2 V. In addition, when NCNR is used as a host material for sulfur in lithium–sulfur batteries, it exhibits significantly improved discharge capacity and excellent cycling stability (maintaining a capacity of 672 mA h g–1 after 200 cycles at a rate of 0.5 C), providing new ideas for solving the problems of capacity degradation faced by lithium–sulfur batteries.

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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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