scholarly journals Exploration of Li-Organic Batteries Using Hexaphyrin as an Active Cathode Material

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2433
Author(s):  
Ji-Young Shin ◽  
Zhongyue Zhang ◽  
Kunio Awaga ◽  
Hiroshi Shinokubo
Keyword(s):  
Cathode Material ◽  
Electrochemical Oxidation ◽  
Electrode Material ◽  
Uv Absorption ◽  
Active Electrode ◽  
Fast Charging ◽  
Organic Batteries ◽  
Charge Discharge

Lithium-collaborating organic batteries (Li-[28]hexs) were investigated with [28]hexaphyrin(1.1.1.1.1.1) as an active electrode material. Each hexaphyrin of [28]Hex cathode ideally involved four electrons per unit cycle and performed a typical charge/discharge processes of Li-organic battery. Li-[28]Hex batteries set with fast charging rates showed reasonably stable charge and discharge performances over 200 cycles even though it caused incomplete (2~3 electrons) charge/discharge cycles due to failing the complete charging process. UV absorption changes of [28]hexaphyrin in CH2Cl2 were supplementary for the electrochemical oxidation, which performed a conversion from [28]hexaphyrin to [26]hexaphyrin.

scholarly journals dual-ion charge-discharge behaviors of Na-NiNc and NiNc-NiNc batteries

2021 ◽  
Author(s):  
Jinkwang Hwang ◽  
Rika Hagiwara ◽  
Hiroshi Shinokubo ◽  
Ji-Young Shin
Keyword(s):  
Discharge Capacity ◽  
Electrode Material ◽  
High Stability ◽  
Coulombic Efficiency ◽  
Active Electrode ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Charge Discharge ◽  
High Coulombic Efficiency

Dual-ion sodium-organic secondary batteries were provided with antiaromatic porphyrinoid, NiNc as an active electrode material, which implemented inherent charge-discharge behaviors with high discharge capacity, high stability, high Coulombic efficiency with...

Poly(vinylphenoxazine) as Fast-Charging Cathode Material for Organic Batteries

2019 ◽  
Vol 8 (1) ◽  
pp. 238-247 ◽  
Author(s):  
Fabian Otteny ◽  
Verena Perner ◽  
Daniel Wassy ◽  
Martin Kolek ◽  
Peter Bieker ◽  
...  
Keyword(s):  
Cathode Material ◽  
Fast Charging ◽  
Organic Batteries

Porous Poly(5-Cyanoindole) Electrode with High Capacitance

2014 ◽  
Vol 1053 ◽  
pp. 235-239 ◽  
Author(s):  
Wei Qiang Zhou ◽  
Dong Lan Huang ◽  
Xiu Mei Ma ◽  
Jing Kun Xu ◽  
Feng Xing Jiang ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrode Material ◽  
Specific Power ◽  
Cycle Stability ◽  
Active Electrode ◽  
First Time ◽  
Porous Poly ◽  
Charge Discharge ◽  
Scanning Electron ◽  
Discharge Test

A porous poly (5-cyanoindole) film was easily electrodeposited and for the first time evaluated as an active electrode material in 1.0 M H2SO4. The poly (5-cyanoindole) film was investigated using scanning electron microscope, cyclic voltammetry, impedance spectroscopy and charge-discharge test. The specific capacitance of poly (5-cyanoindole) electrode was 336 F g-1 under the current density of 2.4 A g-1 and decreased by 30% after 1000 cycles, which indicated that poly (5-cyanoindole) electrode had good cycle stability. Additionally, the specific energy of poly (5-cyanoindole) electrode reached 23 Wh kg-1 when the specific power was 190 W kg-1. These results indicated the feasibility of poly (5-cyanoindole) as electrode material for supercapacitors.

scholarly journals Correction: An anionic and cationic surfactant-assisted hydrothermal synthesis of cobalt oxide nanoparticles as the active electrode material for supercapacitors

2021 ◽  
Author(s):  
R. R. Samal ◽  
Aneeya K. Samantara ◽  
S. Mahalik ◽  
J. N. Behera ◽  
B. Dash ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Cobalt Oxide ◽  
Cationic Surfactant ◽  
Electrode Material ◽  
Oxide Nanoparticles ◽  
Active Electrode ◽  
Cobalt Oxide Nanoparticles ◽  
Surfactant Assisted

Correction for ‘An anionic and cationic surfactant-assisted hydrothermal synthesis of cobalt oxide nanoparticles as the active electrode material for supercapacitors’ by R. R. Samal et al., New J. Chem., 2021, 45, 2795–2803; DOI: 10.1039/D0NJ05088A.

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.

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