Enhanced electrochemical performance of carbon materials derived from wood pitch via green ball-milling

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-05-09 DOI:10.1016/j.biombioe.2025.107967

Junwei Wu, Ningning Tan, Haijun Li, Yaohang Weng, Biao Huang, Beili Lu, Lirong Tang

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Abstract

Wood pitch, a byproduct of bamboo and wood production, is a promising raw material for carbon substances because of its high carbon yield and aromatic structures. In this study, a green, solvent-free ball-milling method was employed to control the degree of oxidation of wood pitch by adjusting the milling time. The degree of oxidation degree was positively correlated with the milling time, reaching 0.4 (O/C atomic ratio) at 11 h. The ball-milling process reduced the particle size and enhanced the exposure of the oxygen-containing groups, thereby improving the reactivity. Prolonging the milling time increased the number of oxygen-containing functional groups in wood pitch, improving the electrochemical performance of porous carbon materials. After 9 h of ball-milling, the resulting carbon material exhibited a specific capacitance of 297 F/g at a current density of 1 A/g. It demonstrates advantages such as environmental friendliness, low cost, and easy functionalization, making it a highly promising electrode material for supercapacitors.

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通过绿球磨提高木沥青碳材料的电化学性能

木沥青是竹木生产的副产品，由于其高碳收率和芳香结构，是一种很有前途的碳物质原料。本研究采用绿色无溶剂球磨法，通过调整球磨时间来控制木沥青的氧化程度。氧化程度与球磨时间呈正相关，在11 h时达到0.4 （O/C原子比）。球磨过程减小了颗粒尺寸，增强了含氧基团的暴露，从而提高了反应性。延长磨矿时间增加了木沥青中含氧官能团的数量，提高了多孔碳材料的电化学性能。球磨9 h后，得到的碳材料在电流密度为1 a /g时的比电容为297 F/g。它具有环境友好、成本低、易于功能化等优点，是一种非常有前途的超级电容器电极材料。

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.