Results 221 to 230 of about 3,602 (261)

Asymmetric hybrid capacitor based on Co3O4 nanowire electrode

Ionics, 2020
In this work, Co3O4 nanowires grown on Ni foam have been synthesized through a facile hydrothermal approach, revealing large capacity of 310.4 C g−1 and superior cycling stability of 80.3% capacity retention after 6000 cycles. The asymmetric supercapacitors were fabricated based on Co3O4//AC device, which delivers an energy density of 0.4 mWh cm−3 at ...
Yue Zhao, Henqi Liu, Pengfei Hu, Jianrong Song, Li Xiao   +4 more
openaire   +1 more source

Asymmetric electronic deformation in graphene molecular capacitors

International Journal of Quantum Chemistry
AbstractAsymmetric deformation density analysis is applied on bilayer graphene flakes as molecular capacitors to identify the extent of asymmetric distribution of electrons and holes when exposed to bias voltage. Three triangular, orthorhombic, and hexagonal symmetries for graphene flakes are considered in two sizes and electric field potential is ...
S. Salehfar, S. M. Azami
openaire   +1 more source

Cu-doped NiO for aqueous asymmetric electrochemical capacitors

Ceramics International, 2014
Abstract In this work, the influence of Cu doping on the electrochemical properties of NiO was investigated regarding its performance as electrodes in aqueous supercapacitors. NiO and Ni1−xCuxO (x=0.5–3%) cathode materials were synthesized via a citrate-gel process.
Guohui Yuan, Yunfu Liu, Min Yue, Hongju Li, Encheng Liu, Youyuan Huang, Dongliang Kong   +6 more
openaire   +1 more source

A New Asymmetric Switched-Capacitor Inverter for Photovoltaic Systems

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020
This paper presents a new switched-capacitor multi-level inverter (SCMLI) for photovoltaic systems which can eliminate the leakage current. The traditional SCMLI suffer from the H-Bridge to obtain negative levels, which create variable common mode voltage (CMV) and so generates the leakage current.
Mehdi Samizadeh, Xiaoteng Li, Xu Yang, Bagher Karami, Wenjie Chen, Alaaeldin Hassan, Mohamad Abou Houran, Majid Kamranian   +7 more
openaire   +1 more source

Hybrid lithium-ion capacitors with asymmetric graphene electrodes

Journal of Materials Chemistry A, 2017
A dual-graphene LIC delivered a high energy density of 222 W h kg−1 with a power density of 410 W kg−1.
Yige Sun, Jie Tang, Faxiang Qin, Jinshi Yuan, Kun Zhang, Jing Li, Da-Ming Zhu, Lu-Chang Qin   +7 more
openaire   +1 more source

Comparing Symmetric and Asymmetric Electrochemical Capacitors: A Modeling Approach

ECS Meeting Abstracts, 2013
Abstract not Available.
John Staser, John W. Weidner
openaire   +1 more source

Electrochemical capacitance of NiO/Ru0.35V0.65O2 asymmetric electrochemical capacitor

Journal of Power Sources, 2007
Abstract A designed asymmetric hybrid electrochemical capacitor was presented where NiO and Ru0.35V0.65O2 as the positive and negative electrode, respectively, both stored charge through reversible faradic pseudocapacitive reactions of the anions (OH−) with electroactive materials.
Chang-Zhou Yuan, Bo Gao, Xiao-Gang Zhang
openaire   +1 more source

Asymmetric electrochemical capacitors—Stretching the limits of aqueous electrolytes

MRS Bulletin, 2011
Abstract
Jeffrey W. Long, Daniel Bélanger, Thierry Brousse, Wataru Sugimoto, Megan B. Sassin, Olivier Crosnier   +5 more
openaire   +1 more source

Asymmetrical Electrochemical Capacitors Using Heteropoly Acid Electrolytes

ECS Meeting Abstracts, 2008
Abstract not Available.
Keryn K. Lian, Changming Li
openaire   +1 more source

High-Energy MnO₂ Nanowire/Graphene and Graphene Asymmetric Electrochemical Capacitors

ACS Nano, 2010
In order to achieve high energy and power densities, we developed a high-voltage asymmetric electrochemical capacitor (EC) based on graphene as negative electrode and a MnO(2) nanowire/graphene composite (MGC) as positive electrode in a neutral aqueous Na(2)SO(4) solution as electrolyte.
Wu, Zhong-Shuai, Ren, Wencai, Wang, Da-Wei, Li, Feng, Liu, Bilu, Cheng, Hui-Ming   +5 more
openaire   +5 more sources