TY  - JOUR
AU  - Shah, Laiba
AU  - Siddiqa, Syeda Farahat
AU  - Ullah, Javid
AU  - Ullah, Atta
AU  - Sadiq, Adnan
AU  - Ahmad, Ibrar
AU  - Hayat, Khizar
AU  - Shah, Said Karim
PY  - 2026
DA  - 2026/08/14
TI  - Thermal Conversion of Cobalt Based Hexacyanoferrates into Derived Cobalt Oxides for Supercapacitor Applications
JO  - Journal of Advanced Electronic Materials
T2  - Journal of Advanced Electronic Materials
JF  - Journal of Advanced Electronic Materials
VL  - 2
IS  - 3
SP  - 89
EP  - 100
DO  - 10.62762/JAEM.2026.780043
UR  - https://www.icck.org/article/abs/JAEM.2026.780043
KW  - cobalt hexacyanoferrates
KW  - thermal conversion
KW  - derived oxides
KW  - pseudocapacitor
KW  - cyclic voltammetry
KW  - kinetics
AB  - We report the synthesis of cobalt-based hexacyanoferrate (Co-HCF) via a simple co-precipitation method and its subsequent conversion to a derived oxide through thermal treatment. Comprehensive characterization was performed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). XRD confirms the cubic crystal structure corresponding well to the JCPDS card no. 00-024-0327. FTIR confirms the presence of functional groups in Co-HCF, while the annealing process results in the complete removal of the cyanide ligands, yielding the derived oxide. SEM and EDX analyses confirm the cubic morphology and elemental composition of the prepared samples. Furthermore, electrochemical evaluation using cyclic voltammetry (CV) revealed that Co-HCF delivered a higher specific capacitance (\(C_s\)) of \SI{624}{\farad\per\gram} at \SI{5}{\milli\volt\per\second}, highlighting pseudocapacitive behavior due to its open framework structure and abundant redox-active cobalt centers. In contrast, the annealed sample exhibited comparatively lower \(C_s\) of \SI{143}{\farad\per\gram} under identical conditions, attributed to the partial collapse of the open HCF channels. This work demonstrates a controlled conversion route from Co-HCF to derived oxide, offering a promising pathway for next-generation supercapacitors (SCs) and sustainable energy storage technologies.
SN  - 3070-5649
PB  - Institute of Central Computation and Knowledge
LA  - English
ER  - 

@article{Shah2026Thermal,
  author = {Laiba Shah and Syeda Farahat Siddiqa and Javid Ullah and Atta Ullah and Adnan Sadiq and Ibrar Ahmad and Khizar Hayat and Said Karim Shah},
  title = {Thermal Conversion of Cobalt Based Hexacyanoferrates into Derived Cobalt Oxides for Supercapacitor Applications},
  journal = {Journal of Advanced Electronic Materials},
  year = {2026},
  volume = {2},
  number = {3},
  pages = {89-100},
  doi = {10.62762/JAEM.2026.780043},
  url = {https://www.icck.org/article/abs/JAEM.2026.780043},
  abstract = {We report the synthesis of cobalt-based hexacyanoferrate (Co-HCF) via a simple co-precipitation method and its subsequent conversion to a derived oxide through thermal treatment. Comprehensive characterization was performed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). XRD confirms the cubic crystal structure corresponding well to the JCPDS card no. 00-024-0327. FTIR confirms the presence of functional groups in Co-HCF, while the annealing process results in the complete removal of the cyanide ligands, yielding the derived oxide. SEM and EDX analyses confirm the cubic morphology and elemental composition of the prepared samples. Furthermore, electrochemical evaluation using cyclic voltammetry (CV) revealed that Co-HCF delivered a higher specific capacitance (\(C\_s\)) of \SI{624}{\farad\per\gram} at \SI{5}{\milli\volt\per\second}, highlighting pseudocapacitive behavior due to its open framework structure and abundant redox-active cobalt centers. In contrast, the annealed sample exhibited comparatively lower \(C\_s\) of \SI{143}{\farad\per\gram} under identical conditions, attributed to the partial collapse of the open HCF channels. This work demonstrates a controlled conversion route from Co-HCF to derived oxide, offering a promising pathway for next-generation supercapacitors (SCs) and sustainable energy storage technologies.},
  keywords = {cobalt hexacyanoferrates, thermal conversion, derived oxides, pseudocapacitor, cyclic voltammetry, kinetics},
  issn = {3070-5649},
  publisher = {Institute of Central Computation and Knowledge}
}