Abstract In this study, aloe peel-derived honeycomb-like porous carbons (AP-HC) are controllably prepared by combining simple hydrothermal carbonization with chemical activation. A morphology transformation from the spherical structure (AP-SC) to the honeycomb-like structure (AP-HC) is achieved for biomass-derived carbon materials and is accompanied by an increase in the specific surface area from 13 to 1286 m2 g−1. The AP-HC as a counter electrode (CE) for dye-sensitized solar cells (DSSCs) exhibits remarkable catalytic activity for I3- ion reduction and a high power conversion efficiency (PCE) of 6.92% that matches the Pt-based DSSC's performance (7.19%). As a working electrode in supercapacitors (SCs), a high specific capacitance of 264 F g−1 at 0.5 A g−1 is achieved in a three-electrode system. Additionally, a high retention rate of ∼77.45% (ranging from 0.5 to 30.0 A g−1) and superior cycling performance (91% capacitance retention after 5000 cycles) are also demonstrated. This study provides an efficient strategy for fabricating morphology-controllable porous bio-based carbon with higher specific surface area (1286 m2 g−1) that exhibits significant potential for new energy devices.

中文翻译：

---

芦荟皮衍生的蜂窝状生物基碳具有可控的形态及其优异的电化学性能用于新能源设备

摘要 本研究通过简单的水热碳化和化学活化相结合，可控地制备了芦荟皮衍生的蜂窝状多孔碳（AP-HC）。生物质衍生的碳材料实现了从球形结构 (AP-SC) 到蜂窝状结构 (AP-HC) 的形态转变，并伴随比表面积从 13 增加到 1286 m2 g-1 . AP-HC 作为染料敏化太阳能电池 (DSSC) 的对电极 (CE) 表现出显着的 I3- 离子还原催化活性和 6.92% 的高功率转换效率 (PCE)，与 Pt 基 DSSC 的性能相匹配。 7.19%)。作为超级电容器 (SC) 中的工作电极，在三电极系统中实现了 0.5 A g-1 下 264 F g-1 的高比电容。此外，保留率高达~77。还展示了 45%（范围从 0.5 到 30.0 A g-1）和优异的循环性能（5000 次循环后电容保持率为 91%）。该研究为制造具有更高比表面积（1286 m2 g-1）的形态可控多孔生物基碳提供了一种有效的策略，该碳在新能源设备方面具有显着的潜力。