TY - JOUR
T1 - Ni Prussian Blue Analogue/Mesoporous Carbon Composite as Electrode Material for Aqueous K-Ion Energy Storage
T2 - Effect of Carbon-Framework Interaction on Its Electrochemical Behavior
AU - Vázquez-Samperio, Juvencio
AU - Sánchez-Padilla, N. M.
AU - Acevedo-Peña, Próspero
AU - Cano, Arely
AU - Nava, Noel
AU - Morales-Acosta, D.
AU - Oliver-Tolentino, Miguel
N1 - Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/11/8
Y1 - 2018/11/8
N2 - This study evaluates the interaction of mesoporous carbon (MC) and nitrogen doped mesoporous carbon (NMC) with Nickel prussian blue analogues (Ni-PBA) and its effect on electrochemical properties and energy storage. The Raman, IR, Mossbauer and XPS results reveal that MC-NiPBA composite exhibited a large modification to covalent character of carbon and an increase in defects of carbonaceous material. This latter is associated with the oxidation of carbon sites and reduction of iron in hexacyanoferrate during composite synthesis, which increase the charge subtraction in Fe (Low Spin) through CN ligand, due to sp-d hybridization between nickel and carbon structure. Electrochemical impedance spectroscopy characterization showed that the interaction between MC and NiPBA decreases the paste resistance and improves the chemical capacitance of the material, whereas, the apparent diffusion coefficient for K-ion in Ni-PBA is not affected by the presence of mesoporous carbon. The cyclic voltammetry and galvanostatic characterization confirm the enhancement of MC-NiPBA capacitance during charge/discharge process due to their synergetic interaction. However, the donor/acceptor characteristics of nitrogen modify the orbital hybridization in doped carbon, inhibiting the carbon-framework interaction.
AB - This study evaluates the interaction of mesoporous carbon (MC) and nitrogen doped mesoporous carbon (NMC) with Nickel prussian blue analogues (Ni-PBA) and its effect on electrochemical properties and energy storage. The Raman, IR, Mossbauer and XPS results reveal that MC-NiPBA composite exhibited a large modification to covalent character of carbon and an increase in defects of carbonaceous material. This latter is associated with the oxidation of carbon sites and reduction of iron in hexacyanoferrate during composite synthesis, which increase the charge subtraction in Fe (Low Spin) through CN ligand, due to sp-d hybridization between nickel and carbon structure. Electrochemical impedance spectroscopy characterization showed that the interaction between MC and NiPBA decreases the paste resistance and improves the chemical capacitance of the material, whereas, the apparent diffusion coefficient for K-ion in Ni-PBA is not affected by the presence of mesoporous carbon. The cyclic voltammetry and galvanostatic characterization confirm the enhancement of MC-NiPBA capacitance during charge/discharge process due to their synergetic interaction. However, the donor/acceptor characteristics of nitrogen modify the orbital hybridization in doped carbon, inhibiting the carbon-framework interaction.
KW - Impedance
KW - Ni-Prussian Blue Analogue
KW - composites
KW - energy storage
KW - mesoporous carbon
UR - http://www.scopus.com/inward/record.url?scp=85056196009&partnerID=8YFLogxK
U2 - 10.1002/slct.201801333
DO - 10.1002/slct.201801333
M3 - Artículo
SN - 2365-6549
VL - 3
SP - 11441
EP - 11450
JO - ChemistrySelect
JF - ChemistrySelect
IS - 41
ER -