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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pristine carbon nitride as active material for high-performance metal-free supercapacitors: simple, easy and cheap

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Author(s):
Goncalves, Roger [1] ; Lima, Thiago M. [2, 3] ; Paixao, Marcio W. [2] ; Pereira, Ernesto C. [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, Ctr Dev Funct Mat CDMF, Mail Box 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, Ctr Excellence Res Sustainable Chem CERSusChem, Mail Box 676, BR-13565905 Sao Carlos, SP - Brazil
[3] Fed Fluminense Univ, Inorgan Chem Dept, BR-24020150 Niteroi, RJ - Brazil
Total Affiliations: 3
Document type: Journal article
Source: RSC ADVANCES; v. 8, n. 61, p. 35327-35336, 2018.
Web of Science Citations: 3
Abstract

Understanding the basic properties of pristine carbon nitride electrodes is of great importance for their further applications as supercapacitor materials. To this end, a comparative study of unmodified carbon nitride is crucial to understand the difference between the bare material and its composite counterparts described in the literature. Therefore, the aim of this paper is to explore the electrochemical behaviour of casting-produced C3N4 electrodes using cyclic voltammetry, charge/discharge curves and impedance spectroscopy. The results from this study show a capacitance value of 113.7 F g(-1) at 0.2 A g(-1) with an impressive retention of 89.2% after 5000 charge and discharge cycles at 3.0 A g(-1). In addition, this material shows a large amount of specific energy (76.5 W h kg(-1)) at an operation power of 11.9 W kg(-1), decreasing only 10.7% due to the electrochemical aging process. Hence, C3N4 constitutes a long-life pristine material with a large amount of energy and a moderate operation power with better performance than other C3N4-based composites found in the literature. These results are important to gain a better understanding of the inherent properties of carbon nitride - to further design composites with higher specific capacitance, longer lifetime, and specific energy. (AU)

FAPESP's process: 17/06536-0 - Green chemistry: sustainable synthetic methods employing catalysis, benign solvents, safer reagents and bio-renewable feedstock
Grantee:Thiago de Melo Lima
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/10897-2 - Characterization of the redox and ageing processes in self assembled films of conducting polymers
Grantee:Wania Aparecida Christinelli
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 14/50249-8 - Green chemistry: sustainable synthetic methods employing benign solvents, safer reagents, and bio-renewable feedstock
Grantee:Arlene Gonçalves Corrêa
Support type: Research Grants - Research Centers in Engineering Program
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 15/17141-1 - Development and mechanism studies of new synthetic methodologies for the synthesis of bioactive compounds
Grantee:Ricardo Samuel Schwab
Support type: Regular Research Grants