NDLI: High capacitive performance of exfoliated biochar nanosheets from biomass waste corn cob

Content Provider	Royal Society of Chemistry (RSC)
Author	Genovese, Matthew Jiang, Junhua Holm, Nancy Lian, Keryn
Copyright Year	2015
Abstract	A high performance exfoliated biochar carbon with a layered nanosheet structure was prepared from a low cost agricultural residue (corn cob) via a novel synthesis strategy involving biomass pre-treatment, nitrogen pyrolysis, and a high temperature thermal–chemical flash exfoliation. The exfoliation strategy resulted in porous carbon nanosheets with BET specific surface area of 543.7 m2 g−1, far higher than the 7.9 m2 g−1 of the natural biochar produced without any pre- or post-treatment modifications. The exfoliated material also showed increased oxygen functionality in the form of electrochemically active quinone and pyrone surface groups. This combination of high specific surface area and highly active surface functional groups resulted in very promising capacitive performance, demonstrating a high capacitance of 221 F g−1, over 100 times greater than the natural biochar. The exfoliated biochar electrodes fabricated without any conductive or organic additives showed outstanding high rate capability retaining 78% of their low rate capacitance at a fast 40 A g−1 discharge. This combination of high capacitance and fast charge–discharge capability distinguishes this material from most other high surface area activated carbons; in fact, the electrochemical behaviour more closely resembles that of designer nanomaterials such as graphene and carbon nanotubes. The biochar electrodes were also extremely durable showing only a 3% reduction in capacitance after 5000 successive potential cycles. The exfoliation strategy developed here could provide a novel route for the low cost production of high performance energy storage materials from a variety of waste biomass feedstocks.
Starting Page	2903
Ending Page	2913
Page Count	11
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	6
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta06110a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	BET Biochar Carbon Nanosheet Maize Biomass Nitrogen Pyrolysis Specific surface area Oxygen Quinone Capacitance Electrochemistry Nanomaterials Graphene Carbon nanotube
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Hierarchical NiCo₂O₄ nanosheets/nitrogen doped graphene/carbon nanotube film with ultrahigh capacitance and long cycle stability as a flexible binder-free electrode for supercapacitors

A Comparative Study on Biochar from Slow Pyrolysis of Corn Cob and Cassava Wastes

Free-standing vertically-aligned nitrogen-doped carbon nanotube arrays/graphene as air-breathing electrodes for rechargeable zinc–air batteries

Zinc cobalt sulfide nanosheets grown on nitrogen-doped graphene/carbon nanotube film as a high-performance electrode for supercapacitors

Self-templating synthesis of nitrogen-decorated hierarchical porous carbon from shrimp shell for supercapacitors

Enhanced capacitive deionization performance of graphene/carbon nanotube composites

Three-dimensional graphene-based hierarchically porous carbon composites prepared by a dual-template strategy for capacitive deionization

Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(ii) and Cd(ii) removal

Biochar synthesis from mineral and ash-rich waste biomass, part 2: characterization of biochar and co-pyrolysis mechanism for carbon sequestration

High capacitive performance of exfoliated biochar nanosheets from biomass waste corn cob

Similar Documents

Hierarchical NiCo2O4 nanosheets/nitrogen doped graphene/carbon nanotube film with ultrahigh capacitance and long cycle stability as a flexible binder-free electrode for supercapacitors

A Comparative Study on Biochar from Slow Pyrolysis of Corn Cob and Cassava Wastes

Free-standing vertically-aligned nitrogen-doped carbon nanotube arrays/graphene as air-breathing electrodes for rechargeable zinc–air batteries

Zinc cobalt sulfide nanosheets grown on nitrogen-doped graphene/carbon nanotube film as a high-performance electrode for supercapacitors

Self-templating synthesis of nitrogen-decorated hierarchical porous carbon from shrimp shell for supercapacitors

Enhanced capacitive deionization performance of graphene/carbon nanotube composites

Three-dimensional graphene-based hierarchically porous carbon composites prepared by a dual-template strategy for capacitive deionization

Biochar-supported carbon nanotube and graphene oxide nanocomposites for Pb(ii) and Cd(ii) removal

Biochar synthesis from mineral and ash-rich waste biomass, part 2: characterization of biochar and co-pyrolysis mechanism for carbon sequestration

High capacitive performance of exfoliated biochar nanosheets from biomass waste corn cob

Hierarchical NiCo₂O₄ nanosheets/nitrogen doped graphene/carbon nanotube film with ultrahigh capacitance and long cycle stability as a flexible binder-free electrode for supercapacitors