Hierarchical nanoarchitectonics of ZnCO3-templated porous carbon derived from lignite alkali extract for supercapacitor applications

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

Diamond and Related Materials Pub Date : 2025-05-07 DOI:10.1016/j.diamond.2025.112428

Xiaoming Yue, Yilin Wang, Zhiying Liu, Yaqing Yang, Jing Li, Quan Hou, Jiamei Zhu, Junsheng Zhu

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Abstract

Three-dimension (3D) hierarchically porous carbon (HZCP) was prepared through embedding zinc carbonate particles in the carbon skeleton followed by high-temperature activation and the decomposition of zinc carbonate. Under optimal experimental conditions of a carbon source-to-template mass ratio of 1:5, an activation temperature of 700 °C, and an activation time of an hour, the three-dimensional porous carbon HZCP-5 exhibited a specific surface area of 1865.8 m² g⁻¹, with micropores accounting for 90.83 %. Used as the supercapacitor electrodes, HZCP achieved a specific capacitance of 367.63 F g⁻¹ at a current density of 1 A g⁻¹ in a three-electrode system, maintaining 270.44 F g⁻¹ at 10 A g⁻¹ with a capacitance retention rate of 73.56 %. Additionally, these advantages could enable the devised capacitor to exhibit a capacitance retention of 95.45 % after 20,000 cycles at 1 A g⁻¹.

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褐煤碱萃取物制备的znco3模板多孔碳在超级电容器中的分级纳米结构

通过在碳骨架中包埋碳酸锌颗粒，并对碳酸锌进行高温活化和分解，制备了三维分层多孔碳（HZCP）。在碳源与模板质量比为1:5，活化温度为700℃，活化时间为1小时的最佳实验条件下，三维多孔碳HZCP-5的比表面积为1865.8 m2 g−1，微孔占90.83%。作为超级电容器电极，在三电极体系中，HZCP在电流密度为1 a g−1时的比电容为367.63 F g−1，在10 a g−1时保持270.44 F g−1，电容保持率为73.56%。此外，这些优点可以使设计的电容器在1 ag−1下经过20,000次循环后显示出95.45%的电容保持率。

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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.