Synthesis of graphene-like porous carbon from biomass for electrochemical energy storage applications

Graphene-like porous carbon (GLC) was synthesized from walnut shell (WSh) by carbonization and thermochemical activation process. The obtained samples of graphene-like porous carbon based on walnut shell (GLC-WSh) were characterized by physicochemical analysis in order to optimize the synthesis proc...

Full description

Saved in:
Bibliographic Details
Published in:Diamond and related materials 2021-11, Vol.119, p.108560, Article 108560
Main Authors: Yeleuov, Mukhtar, Daulbayev, Chingis, Taurbekov, Azamat, Abdisattar, Alisher, Ebrahim, Rabi, Kumekov, Serik, Prikhodko, Nikolay, Lesbayev, Bakytzhan, Batyrzhan, Karakozov
Format: Article
Language:English
Subjects:
Additives
Biomass energy production
Biowaste derived
Carbon
Desalination
Electrochemical analysis
Electrochemical double layer capacitor
Energy storage
Few-layer graphene
Graphene
Graphene-like porous carbon
Lithium-ion batteries
Optimization
Raman spectra
Rechargeable batteries
Rocket propellants
Seawater
Synthesis
Walnut shell
Walnuts
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Graphene-like porous carbon (GLC) was synthesized from walnut shell (WSh) by carbonization and thermochemical activation process. The obtained samples of graphene-like porous carbon based on walnut shell (GLC-WSh) were characterized by physicochemical analysis in order to optimize the synthesis process. The optimum condition of GLC-WSh synthesis was determined to meet the basic requirements for various applications such as an active material for supercapacitors, lithium-ion battery, as energy-intensive additives in order to increase the efficiency of high-energy rocket fuels, and as a membrane for desalination of seawater. The Raman spectra confirmed the presence of few-layer graphene in GLC-WSh with on average number of 5–7 graphene layers. The specific surface area (SSA) was determined using nitrogen adsorption/desorption analysis. The SSA is 2800 m2 g−1 according to Brunauer-Emmett-Teller method. The mass yield of GLC-WSh from the initial mass of the WSh was 21%. The synthesized GLC-WSh powder was applied as an active material for an electrochemical double layer capacitor. Electrochemical characterization showed a high specific capacitance value of 263 F/ g and columbic efficiency of 99.4% at a gravimetric current density of 1000 mA/ g. [Display omitted] •Synthesis of biowaste derived graphene like porous carbon from walnut shell by simple chemical method•Analysis of supercapacitor properties•Detailed analysis of galvanometric charging-discharging properties
ISSN:0925-9635
1879-0062
DOI:10.1016/j.diamond.2021.108560