TY - JOUR
T1 - Facile synthesis of fibrous, mesoporous Ni1 − xO nanosponge supported on Ni foam for enhanced pseudocapacitor applications
AU - Naik, Amarja P.
AU - Salkar, Akshay V.
AU - Peña, Gerardo D.J.Guerrero
AU - Sawant, Jyoti V.
AU - Bharath, G.
AU - Banat, Fawzi
AU - Bhosale, Sheshanath V.
AU - Morajkar, Pranay P.
N1 - Funding Information:
The authors would like to thank Prof. B. R. Srinivasan for his constant support and guidance throughout this work. Authors thank the following funding agencies for their financial support, namely DST/INNO-INDIGO (DST/IMRCD/INNO-INDIGO/BIOCFD/2017(G)), DST SERB (ECR/2015/000047), New Delhi. Miss Amarja P. Naik also acknowledges Goa University for Ph.D. research studentship.
Funding Information:
The authors would like to thank Prof. B. R. Srinivasan for his constant support and guidance throughout this work. Authors thank the following funding agencies for their financial support, namely DST/INNO-INDIGO (DST/IMRCD/INNO-INDIGO/BIOCFD/2017(G)), DST SERB (ECR/2015/000047), New Delhi. Miss Amarja P. Naik also acknowledges Goa University for Ph.D. research studentship.
Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - Abstract: Fibrous mesoporous Ni1 − xO nanosponge with excellent pseudocapacitive properties was synthesized by controlled calcination of [Ni(H2O)4(4-nba)2]·2H2O; a 4-nitrobenzoate (4-nba) coordinated compound. Control experiments with compounds such as [Ni(H2O)6](4-nba)2·2H2O; a non-coordinated 4-nba compound and the [Ni(H2O)6]Cl2, without any 4-nba resulted in the formation of only agglomerated NiO nanoparticles.This proved the significance of 4-nba ligation with Ni2+ in [Ni(H2O)4(4-nba)2]·2H2O to produce highly porous, sponge-like nanostructures, without the need of hydrothermal or solvothermal treatment. The detailed structural characterization confirmed the formation of highly crystalline, mesoporous Ni1 − xO nanosponge.Further, the results obtained from electrochemical investigation by cyclic voltammetry and galvanostatic charge–discharge studies demonstrated that the fibrous, nanosponge-like Ni1 − xO exhibited good electrochemical properties with a high specific capacitance of 1236.84 Fg−1 at a current density of 1 Ag−1 and excellent capacitance retention of ~ 95% even after 10000 charge–discharge cycles at the current density of 6 Ag−1. The improved pseudocapacitive performance and extremely high cycling stability were attributed to extensive mesoporous network, effective distribution of electroactive sites and an improved electrode–electrolyte interaction due to fibrous and spongy nature of the material.The synthesis process is simple and scalable for industrial applications. Graphic abstract: [Figure not available: see fulltext.]
AB - Abstract: Fibrous mesoporous Ni1 − xO nanosponge with excellent pseudocapacitive properties was synthesized by controlled calcination of [Ni(H2O)4(4-nba)2]·2H2O; a 4-nitrobenzoate (4-nba) coordinated compound. Control experiments with compounds such as [Ni(H2O)6](4-nba)2·2H2O; a non-coordinated 4-nba compound and the [Ni(H2O)6]Cl2, without any 4-nba resulted in the formation of only agglomerated NiO nanoparticles.This proved the significance of 4-nba ligation with Ni2+ in [Ni(H2O)4(4-nba)2]·2H2O to produce highly porous, sponge-like nanostructures, without the need of hydrothermal or solvothermal treatment. The detailed structural characterization confirmed the formation of highly crystalline, mesoporous Ni1 − xO nanosponge.Further, the results obtained from electrochemical investigation by cyclic voltammetry and galvanostatic charge–discharge studies demonstrated that the fibrous, nanosponge-like Ni1 − xO exhibited good electrochemical properties with a high specific capacitance of 1236.84 Fg−1 at a current density of 1 Ag−1 and excellent capacitance retention of ~ 95% even after 10000 charge–discharge cycles at the current density of 6 Ag−1. The improved pseudocapacitive performance and extremely high cycling stability were attributed to extensive mesoporous network, effective distribution of electroactive sites and an improved electrode–electrolyte interaction due to fibrous and spongy nature of the material.The synthesis process is simple and scalable for industrial applications. Graphic abstract: [Figure not available: see fulltext.]
UR - https://www.scopus.com/pages/publications/85086169304
U2 - 10.1007/s10853-020-04884-0
DO - 10.1007/s10853-020-04884-0
M3 - Article
AN - SCOPUS:85086169304
SN - 0022-2461
VL - 55
SP - 12232
EP - 12248
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 26
ER -