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Crumpled Nitrogen-Doped Graphene for Supercapacitors with High Gravimetric and Volumetric Performances.
ACS Appl Mater Interfaces. 2015 Oct 14; 7(40):22284-91.AA

Abstract

Graphene is considered a promising electrochemical capacitors electrode material due to its high surface area and high electrical conductivity. However, restacking interactions between graphene nanosheets significantly decrease the ion-accessible surface area and impede electronic and ionic transfer. This would, in turn, severely hinder the realization of high energy density. Herein, we report a strategy for preparation of few-layer graphene material with abundant crumples and high-level nitrogen doping. The two-dimensional graphene nanosheets (CNG) feature high ion-available surface area, excellent electronic and ion transfer properties, and high packing density, permitting the CNG electrode to exhibit excellent electrochemical performance. In ionic liquid electrolyte, the CNG electrode exhibits gravimetric and volumetric capacitances of 128 F g(-1) and 98 F cm(-3), respectively, achieving gravimetric and volumetric energy densities of 56 Wh kg(-1) and 43 Wh L(-1). The preparation strategy described here provides a new approach for developing a graphene-based supercapacitor with high gravimetric and volumetric energy densities.

Authors+Show Affiliations

Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing, 210016, P. R. China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26399912

Citation

Wang, Jie, et al. "Crumpled Nitrogen-Doped Graphene for Supercapacitors With High Gravimetric and Volumetric Performances." ACS Applied Materials & Interfaces, vol. 7, no. 40, 2015, pp. 22284-91.
Wang J, Ding B, Xu Y, et al. Crumpled Nitrogen-Doped Graphene for Supercapacitors with High Gravimetric and Volumetric Performances. ACS Appl Mater Interfaces. 2015;7(40):22284-91.
Wang, J., Ding, B., Xu, Y., Shen, L., Dou, H., & Zhang, X. (2015). Crumpled Nitrogen-Doped Graphene for Supercapacitors with High Gravimetric and Volumetric Performances. ACS Applied Materials & Interfaces, 7(40), 22284-91. https://doi.org/10.1021/acsami.5b05428
Wang J, et al. Crumpled Nitrogen-Doped Graphene for Supercapacitors With High Gravimetric and Volumetric Performances. ACS Appl Mater Interfaces. 2015 Oct 14;7(40):22284-91. PubMed PMID: 26399912.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Crumpled Nitrogen-Doped Graphene for Supercapacitors with High Gravimetric and Volumetric Performances. AU - Wang,Jie, AU - Ding,Bing, AU - Xu,Yunling, AU - Shen,Laifa, AU - Dou,Hui, AU - Zhang,Xiaogang, Y1 - 2015/10/02/ PY - 2015/9/25/entrez PY - 2015/9/25/pubmed PY - 2015/9/25/medline KW - confinement carbonization KW - electrochemistry KW - graphene KW - supercapacitor KW - volumetric performance SP - 22284 EP - 91 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 7 IS - 40 N2 - Graphene is considered a promising electrochemical capacitors electrode material due to its high surface area and high electrical conductivity. However, restacking interactions between graphene nanosheets significantly decrease the ion-accessible surface area and impede electronic and ionic transfer. This would, in turn, severely hinder the realization of high energy density. Herein, we report a strategy for preparation of few-layer graphene material with abundant crumples and high-level nitrogen doping. The two-dimensional graphene nanosheets (CNG) feature high ion-available surface area, excellent electronic and ion transfer properties, and high packing density, permitting the CNG electrode to exhibit excellent electrochemical performance. In ionic liquid electrolyte, the CNG electrode exhibits gravimetric and volumetric capacitances of 128 F g(-1) and 98 F cm(-3), respectively, achieving gravimetric and volumetric energy densities of 56 Wh kg(-1) and 43 Wh L(-1). The preparation strategy described here provides a new approach for developing a graphene-based supercapacitor with high gravimetric and volumetric energy densities. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/26399912/Crumpled_Nitrogen_Doped_Graphene_for_Supercapacitors_with_High_Gravimetric_and_Volumetric_Performances_ L2 - https://dx.doi.org/10.1021/acsami.5b05428 DB - PRIME DP - Unbound Medicine ER -
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