Meng Tingting, Xuan Yimin, Peng Shengjie
School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.
College of Materials Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.
iScience. 2022 Mar 18;25(4):104113. doi: 10.1016/j.isci.2022.104113. eCollection 2022 Apr 15.
High-performance thermally chargeable supercapacitors (TCS) greatly depend on the design of electrode materials. The unique features of succulents of absorbing water for sustaining their lives during long severe droughts imply that there exist vast spaces inside these plants, which inspires us of fabricating biomass-based electrodes by means of such succulents to develop highly efficient TCS. The optimized porous carbon prepared from succulents presents a high specific surface area of up to 3188 m g, resulting in the superior capability of accommodating a vast amount of ions and promising thermal charging performance. The TCS with this carbon electrode can generate an open-circuit voltage of 565 mV under a temperature difference of 50°C with a temperature coefficient as high as 11.1 mV K. This article provides a new method for the preparation of porous carbon from biomass for the TCS system.
高性能热充电超级电容器（TCS）在很大程度上依赖于电极材料的设计。多肉植物在长期严重干旱期间吸收水分以维持生命的独特特性表明，这些植物内部存在大量空间，这启发我们利用此类多肉植物制造生物质基电极，以开发高效的TCS。由多肉植物制备的优化多孔碳具有高达3188 m²/g的高比表面积，从而具备容纳大量离子的卓越能力以及良好的热充电性能。这种碳电极的TCS在50°C的温差下可产生565 mV的开路电压，温度系数高达11.1 mV/K。本文为TCS系统从生物质制备多孔碳提供了一种新方法。
