Results 231 to 240 of about 3,451 (265)

Graphene–MnO2 nanocomposite for high-performance asymmetrical electrochemical capacitor

Materials Research Bulletin, 2014
Abstract Graphene–MnO2 (GR–MnO2) nanocomposites with different MnO2 amounts have been synthesized by a simple redox reaction between GR and KMnO4 at 70 °C, in which GR as a supporting substrate to grow MnO2. Ultrathin MnO2 nanoflakes with a layered structure are dispersed on the surface of GR nanosheets, and the incorporation of MnO2 nanoflakes onto ...
Gaini Zhang, Lijun Ren, LingJuan Deng, Jianfang Wang, Liping Kang, Zong-Huai Liu   +5 more
openaire   +1 more source

HQ Asymmetric Super Capacitor: Graphite-Li4Ti5O12/Ionic Liquid/Carbon

ECS Transactions, 2006
Hybrid supercapacitor that contain high-surface-area carbon and metal oxide electrodes are attracting interest for use in electrochemical devices. Metal oxide electrodes containing Li4Ti5O12 in liquid electrolytes (ionic liquid or nonaqueous liquid) were investigated.
K. Zaghib, Patrick Charest, Abdelbast (. Guerfi, Martin Dontigny, Kim Kinoshita   +4 more
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

Symmetric/Asymmetric Hybrid Multilevel Inverters Integrating Switched-Capacitor Techniques

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
In conventional hybrid multilevel inverters (MLIs), the voltage balance controls of floating capacitors are usually realized by redundant switching states using high-frequency modulation. The switching frequency, as well as the switching loss, is hence increased, and the topologies are limited to low-frequency output occasions as a result.
Junfeng Liu, Jialei Wu, Jun Zeng
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   +3 more sources

Chemically Stable NiMoO ₄ /NRGO Asymmetric Capacitor

ChemistrySelect
Abstract In this work, a chemically stable NiMoO 4 /NRGO nanocomposite was prepared via a facile hydrothermal method. The flower‐like structure of NiMoO 4 (NMO) nanoparticles is randomly distributed on the surface of nitrogen‐doped ...
Raja Shejini, Kannusamy Mohanraj, Johnson Henry, Ganesan Sivakumar   +3 more
openaire   +1 more source

Oxides free materials for asymmetric capacitor

2022
Prabhakarn Arunachalam, Mabrook S. Amer, Govindhasamy Murugadoss, Pugalenthi Ramesh   +3 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Understanding the physics of the asymmetric flying capacitor

29th Conference on Precision Electromagnetic Measurements (CPEM 2014), 2014
V.G. Souza, M. Cattani, A. Vannucci
openaire   +1 more source

Electrode Potentials in Electrochemical Double-Layer Capacitors with Asymmetric Electrode Thicknesses

SSRN Electronic Journal, 2022
Kyung Min Lee, Ketack Kim
openaire   +1 more source