Results 1 to 10 of about 62,450 (242)

Stoichiometry-grain size-specific capacitance interrelationships in nickel oxide. [PDF]

RSC Adv, 2022
Grain size, stoichiometry and specific capacitance in NiO are interrelated.
Parashtekar A, Bourgeois L, Tatiparti SSV.   +2 more
europepmc   +3 more sources

CO₂-Derived Nanocarbons with Controlled Morphology and High Specific Capacitance. [PDF]

ACS Omega, 2023
The conversion of CO2 to nanocarbons addresses a dual goal of harmful CO2 elimination from the atmosphere along with the production of valuable nanocarbon materials. In the present study, a simple one-step metallothermic CO2 reduction to nanocarbons was performed at 675 °C with the usage of a Mg reductant.
Giannakopoulou T, Todorova N, Plakantonaki N, Vagenas M, Sakellis E, Papargyriou D, Katsiotis M, Trapalis C.   +7 more
europepmc   +3 more sources

Chemical Tuning of Specific Capacitance in Functionalized Fluorographene. [PDF]

Chem Mater, 2019
Owing to its high surface area and excellent conductivity, graphene is considered an efficient electrode material for supercapacitors. However, its restacking in electrolytes hampers its broader utilization in this field. Covalent graphene functionalization is a promising strategy for providing more efficient electrode materials.
Vermisoglou EC, Jakubec P, Bakandritsos A, Pykal M, Talande S, Kupka V, Zbořil R, Otyepka M.   +7 more
europepmc   +4 more sources

Dominant role of wettability in improving the specific capacitance

Green Energy & Environment, 2019
Here we report a strategy to enhance the energy density of supercapacitors by increasing the utilization rate of the specific surface area (SSA) via wettability improvement.
Tongtong Liu, Kai Wang, Yongxiu Chen, Shuangliang Zhao, Yongsheng Han   +4 more
doaj   +2 more sources

Specific Capacitance Characteristics of Carbons, Activated by Potassium Hydroxide

Фізика і хімія твердого тіла, 2016
This work is devoted to the study of the charge accumulation in the electric double layer on polarized electrode of the electrochemical systems. A series of samples of the nanoporous carbon material obtained from natural raw materials.
I. M. Budzulyak, B. I. Rachiy, V. M. Vashchynsky, M. V. Berkeschuk   +3 more
doaj   +2 more sources

Enhanced Specific Capacitance and Stability of Polyaniline by Nafion Doping

ChemElectroChem, 2022
Polyaniline (PANI) is a promising electrode material for supercapacitors, but its reported specific capacitance is much lower than its theoretical capacitance. This is because the PANI molecular chains are tightly packed, and the electrolyte is left with
Xudong Fu, Chunguang Xia, Jingwen Qu, Shulin Lei, Xingping Zuo, Zihan Mao, Qingting Liu, Ping Luo, Rong Zhang, Prof. Shengfei Hu   +9 more
doaj   +2 more sources

Polypyrrole Hybrid Nanocomposite Electrode Materials with Outstanding Specific Capacitance

Energies
This paper discusses the results of our investigation of the effect of processing parameters on the electrochemical properties of poly(vinylidene fluoride) single-walled carbon nanotube sheets and PVDF-CNTs modified by solution cast polyimide coating ...
Andekuba Andezai, Jude O. Iroh
doaj   +2 more sources

Imperceptible Supercapacitors with High Area‐Specific Capacitance [PDF]

Small, 2021
AbstractImperceptible electronics will make next‐generation healthcare and biomedical systems thinner, lighter, and more flexible. While other components are thoroughly investigated, imperceptible energy storage devices lag behind because the decrease of thickness impairs the area‐specific energy density.
Jin Ge, Minshen Zhu, Eric Eisner, Yin Yin, Haiyun Dong, Dmitriy D. Karnaushenko, Daniil Karnaushenko, Feng Zhu, Libo Ma, Oliver G Schmidt   +9 more
openaire   +2 more sources

Preparation of Super Activated Carbon from Various Parts of Nelumbo nucifera and its Application as Electrode Material in Supercapacitors

International Journal of Electrochemical Science, 2021
In this study, five parts of Nelumbo nucifera (the lotus stem, lotus leaf, lotus seedpod, lotus seed and lotus root) were used to prepare super activated carbon with an ultra-high specific surface area.
Lin Hu, Shuai Liu, Yating Pan, Liyun Huang, Qujin Cui, Yijia Huang, Juan Tang, Wenyuan Xu, Jianping Liu   +8 more
doaj   +1 more source

Enhancing gravimetric and volumetric capacitance in supercapacitors with nanostructured partially graphitic activated carbon

Electrochemistry Communications, 2023
The volumetric and gravimetric capacitance of supercapacitors are primarily influenced by the specific surface area and porosity required for the formation of electric double layers in the electrode material, and these capacitance are known to have a ...
Jeong Han Lee, Yong-Mook Kang, Kwang Chul Roh   +2 more
doaj   +1 more source