Graphene functionalized bio-carbon xerogel for achieving high-rate and high-stability supercapacitors

Biomass carbons have attracted considerable attention in the pursuit of cheap and renewable electrode materials. However, a low-energy route (like hydrothermal carbonization) is still a challenge for achieving bio-carbon electrodes with high-performance. Herein, a high-rate and high stability supercapacitor was fabricated based on graphene functionalized bio-carbon xerogel. The supercapacitor shows comparable or even higher performance than reported supercapacitors derived from bio-carbons and graphene-based materials, which can be attributed to sandwich-like porous structure that carbon spheres interspersed between porous graphene nanoplatelets.

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背景与挑战

背景概述

该数据集聚焦于利用石墨烯功能化生物碳干凝胶制备高性能超级电容器的研究。通过构建三明治状多孔结构，其中碳球分散在多孔石墨烯纳米片之间，实现了高倍率和高稳定性的电容性能，优于或相当于现有生物碳和石墨烯基材料。