scholarly journals Potato Chip-Like 0D Interconnected ZnCo2O4 Nanoparticles for High-Performance Supercapacitors

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 469
Author(s):  
Siva Pratap Reddy Mallem ◽  
Mallikarjuna Koduru ◽  
Kuppam Chandrasekhar ◽  
S. V. Prabhakar Vattikuti ◽  
Ravi Manne ◽  
...  
Keyword(s):  
Electrode Material ◽  
Redox Reactions ◽  
High Performance ◽  
Potato Chip ◽  
Oxidation States ◽  
Supercapacitor Electrode ◽  
X Ray ◽  
Supercapacitor Application ◽  
Prepared Material ◽  
Charge Discharge

Zinc cobaltite (ZnCo2O4) is an emerging electrode material for supercapacitors due to its rich redox reactions involving multiple oxidation states and different ions. In the present work, potato chip-like 0D interconnected ZnCo2O4 nanoparticles (PIZCON) were prepared using a solvothermal approach. The prepared material was characterized using various analytical methods, including X-ray powder diffraction and scanning electron microscopy. The possible formation mechanism of PIZCON was proposed. The PIZCON electrode material was systematically characterized for supercapacitor application. The areal capacitance of PIZCON was 14.52 mF cm−2 at 10 µA cm−2 of current density, and retention of initial capacitance was 95% at 250 µA cm−2 following 3000 continuous charge/discharge cycles. The attained measures of electrochemical performance indicate that PIZCON is an excellent supercapacitor electrode material.

MOF/PEDOT/HPMo-based polycomponent hierarchical hollow micro-vesicles for high performance flexible supercapacitors

2021 ◽  
Vol 9 (5) ◽  
pp. 2948-2958
Author(s):  
Bing Wang ◽  
Shuo Liu ◽  
Lin Liu ◽  
Wen-Wei Song ◽  
Yue Zhang ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Cycle Stability ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitors ◽  
High Area

The three-component PCN-224/PEDOT/PMo12 supercapacitor electrode material is designed to offer high area capacitance, good cycle stability and mechanical flexibility.

scholarly journals Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
Author(s):  
Anil Yedluri ◽  
Tarugu Anitha ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

Preparation and Electrochemical Properties of LaMnO3 Powder as a Supercapacitor Electrode Material

2017 ◽  
Vol 727 ◽  
pp. 698-704 ◽  
Author(s):  
Xian Wei Wang ◽  
Xiao Er Wang ◽  
Hui Chao Zhang ◽  
Qian Qian Zhu ◽  
Dong Li Zheng ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Raw Materials ◽  
Sol Gel ◽  
Galvanostatic Charge ◽  
Supercapacitor Electrode ◽  
Lanthanum Manganate ◽  
Pure Phase ◽  
Charge Discharge

The structural and electrochemical properties of lanthanum manganate (LaMnO3) powder prepared by the sol-gel method are researched in this article. The powder calcined at 600 °C showed amorphous, and the powder calcined at 700-800 °C showed the pure phase of the LaMnO3. The grains with the size of about 80-120 nm were agglomerating together. Cyclic voltammetry and galvanostatic charge-discharge were used to characterize the electrochemical properties in alkaline environment. The electrochemical properties calcined at 700 °C showed a specific capacitance of 73 F/g at the current density of 0.5 A/g. The raw materials for preparing the LaMnO3 powder are cheap, and the operation method is simple.

Tetragonal CoMn2O4 nanocrystals on electrospun carbon fibers as a high–performance battery–type supercapacitor electrode material

2021 ◽  
Author(s):  
Daniel M. Mijailovic ◽  
Vuk V. Radmilović ◽  
Uros C. Lacnjevac ◽  
Dusica B Stojanovic ◽  
Karen Bustillo ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Electrode Material ◽  
High Performance ◽  
Redox Activity ◽  
Composite Fibers ◽  
Supercapacitor Electrode ◽  
Step Procedure

We herein report a simple two–step procedure for fabricating tetragonal CoMn2O4 spinel nanocrystals on carbon fibers. The battery–type behavior of these composite fibers arises from the redox activity of CoMn2O4...

Synthesis of Graphene Nanoplatelets/Polythiophene as a High Performance Supercapacitor Electrode Material

2021 ◽  
Author(s):  
Yaseen Muhammad ◽  
Ata ur Rahman ◽  
Hamsa Noreen ◽  
Zeeshan Nawaz ◽  
Javed Iqbal Saggu ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Graphene Nanoplatelets ◽  
Supercapacitor Electrode ◽  
High Capacitance

The preparation of a stable, efficient, inexpensive and high capacitance electrode material for supercapacitors is posing great challenges for the researchers. In this report, we demonstrate the synthesis of stable,...

scholarly journals Easy approach to synthesize N/P/K co-doped porous carbon microfibers from cane molasses as a high performance supercapacitor electrode material

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 34739-34750 ◽  
Author(s):  
Alfin Kurniawan ◽  
L. K. Ong ◽  
Fredi Kurniawan ◽  
C. X. Lin ◽  
Felycia E. Soetaredjo ◽  
...  
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Supercapacitor Electrode ◽  
Cane Molasses ◽  
Electrochemical Application ◽  
Carbon Microfibers ◽  
First Time ◽  
Co Doped

For the first time, porous carbon microfibers co-doped with N/P/K were synthesized from cane molasses by combination of electrospinning and carbonization techniques and its electrochemical application to electrode materials for supercapacitors was investigated.

Nanostructured Polyaniline/Graphene/Fe2O3 Composites Hydrogel as a High-Performance Flexible Supercapacitor Electrode Material

2020 ◽  
Vol 3 (7) ◽  
pp. 6434-6446 ◽  
Author(s):  
Anjli Gupta ◽  
Silki Sardana ◽  
Jasvir Dalal ◽  
Sushma Lather ◽  
Anup S. Maan ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Supercapacitor Electrode ◽  
Flexible Supercapacitor

Polythiophene nanocomposites as high performance electrode material for supercapacitor application

2018 ◽  
Author(s):  
H. Vijeth ◽  
M. Niranjana ◽  
L. Yesappa ◽  
S. P. Ashokkumar ◽  
H. Devendrappa
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Supercapacitor Application
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