Biomass-based three-dimensional network porous carbon anodes derived from discontinuous activation for high performance Li-ion batteries

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-10-16 DOI:10.1016/j.diamond.2024.111676

Rui Ding , Litao Chen , Na Li , Qihua Zhou , Xianwen Zhang

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Abstract

An approach of discontinuous activation and frozon-dry pretreatment toward a three-dimensional network porous carbon was proposed by using apple as the carbon source. The porous carbon, characterized by its high surface area and abundant porosity, was optimized through the manipulation of temperature and activator quantities during the activation process. The sample obtained by first calcining at 500 °C and then at 800 °C shows ultra-high rate electrochemical performance of over 900 mA h g⁻¹ after 100 cycles and over 500 mA h g⁻¹ after 500 cycles under the condition of charging and discharging current density of 0.2 A g⁻¹ due to the high porosity. It is ascribed to the unique porous structure that can make the electrolyte and lithium ion transport and path short on the surface and inside the electrode material, further enhance its fast transport ability. The described approach represents an innovative and potentially impactful method for producing porous carbon electrodes with excellent electrochemical performance, particularly in the context of high-rate capability lithium-ion batteries.

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基于生物质的三维网络多孔碳阳极，源自用于高性能锂离子电池的非连续活化技术

该研究以苹果为碳源，提出了一种非连续活化和冻干预处理的方法，以获得三维网络多孔碳。在活化过程中，通过调节温度和活化剂的用量，优化了以高比表面积和丰富的孔隙率为特征的多孔碳。在充放电电流密度为 0.2 A g-1 的条件下，先在 500 °C 煅烧、再在 800 °C 煅烧得到的样品由于孔隙率高，在循环 100 次后显示出超过 900 mA h g-1 的超高速率电化学性能，在循环 500 次后显示出超过 500 mA h g-1 的超高速率电化学性能。这要归功于独特的多孔结构，它可以使电极材料表面和内部的电解质和锂离子传输和路径变短，进一步提高其快速传输能力。所述方法是生产具有优异电化学性能的多孔碳电极的一种创新且具有潜在影响的方法，尤其适用于高倍率锂离子电池。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.