Abstract Controllable synthesis of various nanostructured carbons with different textural parameters to achieve excellent electrochemical performance has attracted tremendous attention in recent years. Herein, a facile one-step Zn involved self-sacrificing template combined with KOH activation strategy has been developed for the producing porous carbon frameworks (PCFs) from sustainable biomass. The resulting PCFs display an interconnected 3D structure with large specific surface area and abundant mesoporous, which is beneficial to capacitive energy storage. Specifically, PCF-1 prepared with 1 g of Zn power presents a large specific capacitance of 285 F/g at 1 A/g and still remain a large value of 220 F/g at 50 A/g in 6 M KOH aqueous electrolyte. Moreover, it also displays an outstanding capacitive performance in 1 M Li2SO4 electrolyte within 0–1.6 V. The basic principle behind this good performance are closely associated with the interconnected 3D structure architecture and abundant mesoporous resulting from Zn involved self-sacrificing template and KOH activation, which is in favour of rapid ionic mass transport. Concerning the facile and efficient process, this Zn involved self-sacrificing template combined with KOH activation strategy is a promising strategy towards functional carbons for electrochemical capacitive storage.

中文翻译：

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一种简单的锌涉及自牺牲模板辅助策略，用于具有高离子扩散系数的水性超级电容器的多孔碳框架

摘要 近年来，可控合成具有不同结构参数的各种纳米结构碳以实现优异的电化学性能受到了极大的关注。在此，已经开发了一种简单的一步 Zn 涉及自牺牲模板与 KOH 活化策略相结合，用于从可持续生物质中生产多孔碳框架 (PCF)。由此产生的 PCF 显示出具有大比表面积和丰富介孔的互连 3D 结构，这有利于电容储能。具体而言，用 1 g Zn 粉制备的 PCF-1 在 1 A/g 下具有 285 F/g 的大比电容，并且在 6 M KOH 水性电解质中在 50 A/g 下仍保持 220 F/g 的大值。此外，它还在 0-1 范围内的 1 M Li2SO4 电解质中显示出出色的电容性能。6 V. 这种良好性能背后的基本原理与互连的 3D 结构结构和由 Zn 产生的丰富介孔密切相关，涉及自牺牲模板和 KOH 活化，这有利于快速离子质量传输。关于简便高效的过程，这种涉及自牺牲模板的 Zn 结合 KOH 活化策略是一种用于电化学电容存储的功能碳的有前途的策略。