title: 3D Graphene Frameworks/Co3O4Composites Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection.
abstract: 3D graphene frameworks/Co3O4composites are produced by the thermal explosion method, in which the generation of Co3O4nanoparticles, reduction of graphene oxide, and creation of 3D frameworks are simultaneously completed. The process prevents the agglomeration of Co3O4particles effectively, resulting in monodispersed Co3O4nanoparticles scattered on the 3D graphene frameworks evenly. The prepared 3D graphene frameworks/Co3O4composites used as electrodes for supercapacitor display a definite improvement on electrochemical performance with high specific capacitance (≈1765 F g-1at a current density of 1 A g-1), good rate performance (≈1266 F g-1at a current density of 20 A g-1), and excellent stability (≈93% maintenance of specific capacitance at a constant current density of 10 A g-1after 5000 cycles). In addition, the composites are also employed as nonenzymatic sensors for the electrochemical detection of glucose, which exhibit high sensitivity (122.16 µA mM-1cm-2) and noteworthy lower detection limit (157 × 10-9M, S/N = 3). Therefore, the authors expect that the 3D graphene frameworks/Co3O4composites described here would possess potential applications as the electrode materials in supercapacitors and nonenzymatic detection of glucose.
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Bao
authors.affiliation: College of Materials Science and Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Shu
authors.initials: S
authors.lastname: Chen
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Chang
authors.initials: C
authors.lastname: Peng
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Li
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Xu
authors.affiliation: Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
authors.forename: Yashao
authors.initials: Y
authors.lastname: Chen
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Encai
authors.initials: E
authors.lastname: Ou
authors.affiliation: State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
authors.forename: Weijian
authors.initials: W
authors.lastname: Xu
keywords: 3D graphene frameworks; electrochemical properties; nonenzymatic sensors; sol-gel process; thermal explosion method