Biomass-derived ant colony-like ion diffused redox porous carbon toward economical and high-performance quasi-solid-state supercapacitor,International Journal of Energy Research

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Biomass-derived ant colony-like ion diffused redox porous carbon toward economical and high-performance quasi-solid-state supercapacitor
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-09-15 , DOI: 10.1002/er.7272
Edugulla Girija Shankar ₁ , Amit Kumar Das ₁ , Jae Su Yu ₁

Affiliation

Present work successfully demonstrates the synthesis of ion diffused ant colony-like porous carbon structure (PSWC) with high surface roughness from seaweed using a facile pre-carbonization NaCl treatment, followed by carbonization at 800°C. X-ray photoelectron spectroscopy and energy-dispersive X-ray spectroscopy studies confirm the retention of natural redox groups such as pyrrolic N, pyridinic N, oxidized sulfur, carboxyl, Fe³⁺, and Zn²⁺ and the diffusion of Na⁺ and Cl⁻ ions in the PSWC. The electrochemical analysis of PSWC reveals that NaCl treatment further enhances the performance, and the redox groups and transition metal ions facilitate the faradic battery-type energy storage with an excellent specific capacitance of 904.44 F g⁻¹ at 1 A g⁻¹ of current density in a classic three-electrode system. The fabricated polyvinyl alcohol-potassium hydroxide gel electrolyte-based quasi-solid-state asymmetric supercapacitor device exhibits good energy density and power density of 52.15 Wh kg⁻¹ and 362.14 W Kg⁻¹, respectively with a superior cyclic life (98.94% capacitance retention after 10 000 cycles). The overall eco-friendliness, low cost, availability, facile synthesis process, sustainability, facile upscale synthesis, and excellent electrochemical properties provide a potential application of PSWC in advanced energy storage systems.

中文翻译：

生物质衍生蚁群离子扩散氧化还原多孔碳制备经济高效准固态超级电容器

目前的工作成功地证明了使用简便的预碳化 NaCl 处理，然后在 800°C 下碳化，从海藻中合成具有高表面粗糙度的离子扩散蚁群状多孔碳结构 (PSWC)。X 射线光电子能谱和能量色散 X 射线能谱研究证实了天然氧化还原基团如吡咯 N、吡啶 N、氧化硫、羧基、Fe ³⁺和 Zn ^{2+的保留以及 Na}⁺和 Cl的扩散^-PSWC 中的离子。PSWC 的电化学分析表明，NaCl 处理进一步提高了性能，氧化还原基团和过渡金属离子促进了法拉第电池型储能，在 1 A g ^-1的电流密度下具有 904.44 F g ^-1的优异比电容在经典的三电极系统中。所制造的聚乙烯醇-氢氧化钾凝胶电解质基准固态非对称超级电容器装置表现出良好的能量密度和功率密度，分别为 52.15 Wh kg ^-1和 362.14 W Kg ^-1，分别具有优异的循环寿命（10 000 次循环后的 98.94% 电容保持率）。整体的生态友好性、低成本、可用性、简便的合成工艺、可持续性、简便的高档合成和优异的电化学性能为 PSWC 在先进的储能系统中提供了潜在的应用。

更新日期：2021-09-15

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