Electric double-layer capacitors (EDLCs) are high-power, long-cycle energy storage device with a wide operational temperature range, making them a promising technology for transportation, micro-grids, and the Internet of Things. The activated carbon, serving as a key material for EDLCs, exhibits exceptional attributes including an elevated surface area, substantial tap density, and abundant nanoporosity. Plants have long been regarded as the most promising precursors for produce activated carbon, owing to their abundant availability, diverse range of species, and renewable nature. This study provides a review on plant-derived activated carbons for electric double-layer capacitors (EDLCs). The initial section of this mini review briefly elucidates the advantages and operational mechanism of EDLCs. Subsequently, plant-derived precursors for activated carbon are categorized into four distinct groups: agricultural and forestry residues, aquatic biomass, fruit shells, and plant-based molecules. The subsequent section of the review discusses the prerequisites for activated carbon production, along with the mechanisms and methodologies employed in its preparation. Furthermore, this study reviews recent advancements in utilizing plant materials as precursors for activated carbon production and explores catalytic graphitization techniques to enhance their electrochemical performance in EDLCs. Finally, the concluding remarks are presented in the fourth section, outlining prospects for potential applications in EDLCs and future research directions for plant-derived active carbon.

中文翻译：

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双电层电容器用植物活性炭研究进展

双电层电容器（EDLC）是一种高功率、长周期的储能器件，具有较宽的工作温度范围，使其成为交通、微电网和物联网领域极具前景的技术。活性炭作为双电层电容器的关键材料，具有卓越的特性，包括较高的表面积、较高的振实密度和丰富的纳米孔隙率。长期以来，植物因其丰富的可用性、多样的物种范围和可再生性而被认为是生产活性炭的最有前途的前体。本研究对用于双电层电容器（EDLC）的植物源活性炭进行了综述。本小型评论的第一部分简要阐述了 EDLC 的优势和运行机制。随后，活性炭的植物源前体被分为四个不同的组：农业和林业残留物、水生生物质、果壳和植物分子。综述的后续部分讨论了活性炭生产的先决条件，以及其制备过程中采用的机制和方法。此外，本研究回顾了利用植物材料作为活性炭生产前体的最新进展，并探索催化石墨化技术以增强其在双电层电容器中的电化学性能。最后，第四部分进行了总结，概述了双电层电容器的潜在应用前景以及植物源活性炭的未来研究方向。