用于超级电容器柔性电极的一步法自组装生物质碳气凝胶/碳纳米管/纤维素纳米纤维复合材料

IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
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引用次数: 0

摘要

灵活轻便的储能设备对可穿戴电子设备至关重要。生物质材料因其生物相容性和无毒性,正在成为理想的柔性电极元件。在这项研究中,菠萝叶纤维被用来制造活性生物质碳气凝胶(Bio-CAA)。然后,将碳纳米管(CNTs)作为导电添加剂,与坚固的菠萝叶纤维素纳米纤维(CNFs)相结合,建立了一个坚固的三维框架。利用一步自组装法,成功合成了碳气凝胶/碳纳米管/碳纳米纤维(Bio-CAA/CNT/CNF)柔性复合电极材料。Bio-CAA 的多孔结构有效地减少了碳纳米管的聚集,从而显著提高了电极材料的电化学性能。表征结果表明,碳气凝胶复合材料在压片后具有很高的比表面积(684.275 m2 g-1)。该材料轻而坚固,可任意弯曲并恢复原状,在 88% 的应变率下可承受 400 Kpa 的压力,表现出优异的机械性能。在三电极系统中,基于 Bio-CAA/CNT/CNF = 19:1:1 的电极在电流密度为 1 A g-1 时的电容为 481 F g-1。基于 CAA/CNT/CNF = 19:1:1 的固态对称超级电容器(SSC)显示出卓越的循环稳定性,在电流密度为 5 A g-1 的条件下,循环 10,000 次后仍能保持 91.7 % 的电容。在功率密度为 500 W kg-1 时,它的能量密度达到 39.63 Wh kg-1。这种基于生物质衍生碳气凝胶的复合材料具有卓越的储能能力,其轻质特性使其非常适合用于柔性显示器、可穿戴设备及相关领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

One-step self-assembled biomass carbon aerogel/carbon nanotube/cellulose nanofiber composite for supercapacitor flexible electrode

One-step self-assembled biomass carbon aerogel/carbon nanotube/cellulose nanofiber composite for supercapacitor flexible electrode

Flexible and exceptionally lightweight energy storage devices are crucial for wearable electronic gadgets. Biomass materials are emerging as ideal flexible electrode components due to their biocompatibility and non-toxic nature. In this study, pineapple leaf fibers were utilized to create activated biomass carbon aerogel (Bio-CAA). Then, carbon nanotubes (CNTs) were integrated as conductive additives, combined with sturdy pineapple leaf cellulose nanofibers (CNFs) to establish a robust 3D framework. Utilizing a one-step self-assembly method, carbon aerogel/carbon nanotube/carbon nanofiber (Bio-CAA/CNT/CNF) flexible composite electrode materials were successfully synthesized. The porous structure of Bio-CAA effectively minimized the aggregation of CNTs, thereby significantly enhancing the electrochemical performance of the electrode material. The characterization indicated that the carbon aerogel composite exhibited a high specific surface area (684.275 m2 g−1) after tablet compression. The material was light yet robust, capable of being bent arbitrarily and recovering its original shape and withstanding 400 Kpa of pressure at an 88 % strain rate, demonstrating excellent mechanical properties. In a three-electrode system, the Bio-CAA/CNT/CNF = 19:1:1 based electrode exhibited a capacitance of 481 F g−1 at a current density of 1 A g−1. The CAA/CNT/CNF = 19:1:1 based solid symmetric supercapacitor (SSC) displayed excellent cycling stability, preserving 91.7 % capacitance after 10,000 cycles at a current density of 5 A g−1. It achieved an energy density of 39.63 Wh kg−1 at a power density of 500 W kg−1. This biomass-derived carbon aerogel-based composite material demonstrates exceptional energy storage capabilities, and its lightweight attributes make it highly suitable for use in flexible displays, wearable devices, and related fields.

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来源期刊
Diamond and Related Materials
Diamond and Related Materials 工程技术-材料科学:综合
CiteScore
6.00
自引率
14.60%
发文量
702
审稿时长
2.1 months
期刊介绍: DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.
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