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Ultrathin 2D Co3O4 and Co3V2O8 nanosheets have been produced from our modified hydrothermal technique (MHT). Both the materials have been proved to be extraordinary electrode materials for pseudocapacitors. The neat nanosheets of Co3O4 and Co3V2O8 exhibit a record specific capacitance value of 1256 F g(-1) and 4194 F g(-1) at 1 A g(-1) current density, respectively.
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http://dx.doi.org/10.1039/c5cc06005b | DOI Listing |
Nanotechnology
September 2025
Shanghai Polytechnic University, No. 2360 Jinhai Road, Shanghai 201209, P.R. China, Shanghai, Shanghai, 201209, CHINA.
A series of Ni-MOF materials were synthesized by a one-step solvothermal method under different reaction conditions, including metal source, organic ligand, reaction time and reaction temperature. The results demonstrated that the Ni-MOFs synthesized with Ni(NO3)2•6H2O as the metal source had higher crystallinity and a more uniform crystalline structure than those with NiCl2•6H2O. Different organic ligands led to the formation of Ni-MOFs in various morphologies.
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September 2025
Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3880, South Africa.
To overcome the potential issue of active site blockage by surfactants in colloidal synthesis, alternative synthetic approaches must be explored. In this study, we investigated both solvent-free and colloidal thermolysis routes to synthesize nickel sulfides (NiS and NiS) using sulfur-based Ni complexes, [Ni(SCO(CH))] (Ni-Xan) and [Ni(SCN(CH))] (Ni-DTC) as precursors. The solvent-free decomposition of these complexes produced ligand-free NiS and NiS in the absence or presence of triphenylphosphine (TPP), respectively.
View Article and Find Full Text PDFSmall
September 2025
School of Mechanical Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
Core-shell electrodes provide a potential and innovative approach for significantly enhancing the performance and capacity of supercapacitors (SCs) by combining two distinct materials. The capabilities of these advanced electrodes surpass those of conventional single electrodes. Specifically, these exhibit better energy storage, higher power density, and improved overall performance.
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September 2025
Laboratory for New Ceramics, Department of Ceramic Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
Polymer-derived ceramics are a versatile class of multifunctional materials synthesized the high-temperature treatment of a preceramic polymer. In this work, we report the synthesis of a vanadium carbide-embedded carbonaceous hybrid by pyrolyzing a modified preceramic polymer incorporating vanadium acetylacetonate in a polysilsesquioxane followed by hydrofluoric acid etching. The structural and microscopic characterisation confirmed the uniform distribution of nanoparticulate vanadium carbide in the matrix.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
We report the synthesis of three-dimensional (3D) graphene/mesoporous carbon/ZIF-derived microporous carbon (G/MC/ZDC-A) heterostructures through an interface-reinforced assembly. This hierarchical architecture synergistically integrates 2D graphene nanosheets with 0D ZDC nanoparticles a mesoporous carbon "binder", effectively mitigating the agglomeration issue while establishing continuous charge transport pathways. When configurated as symmetric supercapacitors with EMIMBF electrolyte, the obtained G/MC/ZDC-A demonstrates decent capacitive performance: a high specific capacitance (240 F g at 0.
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