Green Synthesis of Porous Honeycomblike Carbon Materials for Supercapacitor Electrodes

• DOI: 10.1021/acs.iecr.0c00828
• Publication Date: 2020-07-14T06:48:40Z
• Authors: Kang Sun; Jihui Li; Dichao Wu; Jianchun Jiang
• Keywords: Carbon fibers

Gel precursors based on molecular-modification are becoming a promising strategy for the construction of functional carbon materials. In this paper, sodium alginate was used as precursor to get insoluble gels by introducing Ca2+, and then, 3-dimensional porous honeycomblike materials were prepared following one-step carbonization process. The influence heating rate morphology, structure, electrochemical performance sample also discussed. at 6 °C/min possessed ideal architecture best performance. framework consisted many interconnected bubblelike units, being an open unimpeded which can reduce migration resistance electrolyte in capacitance with is 339 F/g 1 A/g. It maintain almost 85% when current density up 20 A/g, exhibits low diffusion excellent cycling stability. This research establishes new links among environmental improvement, biomass conversion, renewable energy utilization.