Synthesis and characterization of carbon coated LiCo1/3Ni1/3Mn1/3O2 and bio-mass derived graphene like porous carbon electrodes for aqueous Li-ion hybrid supercapacitor. (January 2018)

• Record Type: Journal Article
• Authors: Ramkumar, B.; Yuvaraj, S.; Surendran, S.; Pandi, K.; Ramasamy, Hari Vignesh; Lee, Y.S.; Kalai Selvan, R.
• Is Part Of: Journal of physics and chemistry of solids. Volume 112(2018)
• Page Start: 270
• Page End: 279
• Publication Date: 2018-01
• Subjects: Li-hybrid supercapacitor -- Porous carbon -- Bio-mass -- Layered metal oxide -- Specific capacity; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2017.09.012
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: For the fabrication of aqueous Li-ion hybrid supercapacitor, carbon coated LiCo1/3 Ni1/3 Mn1/3 O2 (or LiCo1/3 Ni1/3 Mn1/3 O2 @C composite) is synthesized by polymeric precursor method with subsequent thermal decomposition procedures for carbon coating. Graphene like porous carbon is obtained by chemical activation from the biomass of Agave Americana . The XRD analysis reveals that LiCo1/3 Ni1/3 Mn1/3 O2 is having a hexagonal layered structure and activated carbon exists in both amorphous and graphitic nature. The TEM image infers that LiCo1/3 Ni1/3 Mn1/3 O2 particles having the non-uniform shape with sub-micron size and the LiCo1/3 Ni1/3 Mn1/3 O2 particles are embedded into amorphous carbon cloud in the composite. The activated carbon shows the specific surface area of 1219 m 2 g −1 . Finally, the fabricated aqueous LiCo1/3 Ni1/3 Mn1/3 O2 @C‖AC hybrid supercapacitor delivers the specific capacitance of 56 F g −1 with good capacity retention even after 5000 cycles. Graphical abstract: Highlights: LiCo1/3 Ni1/3 Mn1/3 O2 @C composite is synthesized by polymeric precursor method. Activated carbon is obtained from the biomass of Agave Americana using chemical activation. The activated carbon shows the specific surface area of 1219 m 2 g −1 . Fabricated LiCo1/3 Ni1/3 Mn1/3 O2 @C‖AC hybrid supercapacitor delivers the specific capacitance of 56 F g −1