Crosslinked polyaniline nanorods with improved electrochemical performance as electrode material for supercapacitors

2014 ◽  
Vol 2 (31) ◽  
pp. 12323-12329 ◽  
Author(s):  
Xue Wang ◽  
Jinxing Deng ◽  
Xiaojuan Duan ◽  
Dong Liu ◽  
Jinshan Guo ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
Polyaniline Nanorods ◽  
Oxidative Copolymerization

Crosslinked polyaniline was synthesized via chemical oxidative copolymerization to achieve improved electrochemical performance.

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.

Polypyrrole/cellulose nanofiber aerogel as a supercapacitor electrode material

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 109143-109149 ◽  
Author(s):  
Qingyuan Niu ◽  
Yaqing Guo ◽  
Kezheng Gao ◽  
Ziqiang Shao
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
Cellulose Nanofiber ◽  
Supercapacitor Electrode ◽  
Microscopic Morphology

CIT-Fe3+ colloid can effectively control over the microscopic morphology of the PPy/CNFs aerogel, which exhibited good electrochemical performance.

Synthesis of High-Performance Hard Carbon from Waste Coffee Ground as Sodium Ion Battery Anode Material: A Review

2021 ◽  
Vol 1044 ◽  
pp. 25-39
Author(s):  
Hafid Khusyaeri ◽  
Dewi Pratiwi ◽  
Haris Ade Kurniawan ◽  
Anisa Raditya Nurohmah ◽  
Cornelius Satria Yudha ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
High Performance ◽  
Production Costs ◽  
Sodium Ion ◽  
Carbon Anode ◽  
Sodium Ion Battery ◽  
Sodium Ion Batteries ◽  
Hard Carbon ◽  
Coffee Grounds

The battery is a storage medium for electrical energy for electronic devices developed effectively and efficiently. Sodium ion battery provide large-scale energy storage systems attributed to the natural existence of the sodium element on earth. The relatively inexpensive production costs and abundant sodium resources in nature make sodium ion batteries attractive to research. Currently, sodium ion batteries electrochemical performance is still less than lithium-ion batteries. The electrochemical performance of a sodium ion battery depends on the type of electrode material used in the manufacture of the batteries.. The main problem is to find a suitable electrode material with a high specific capacity and is stable. It is a struggle to increase the performance of sodium ion batteries. This literature study studied how to prepare high-performance sodium battery anodes through salt doping. The doping method is chosen to increase conductivity and electron transfer. Besides, this method still takes into account the factors of production costs and safety. The abundant coffee waste biomass in Indonesia was chosen as a precursor to preparing a sodium ion battery hard carbon anode to overcome environmental problems and increase the economic value of coffee grounds waste. Utilization of coffee grounds waste as hard carbon is an innovative solution to the accumulation of biomass waste and supports environmentally friendly renewable energy sources in Indonesia.

scholarly journals Air electrode based on poly(3,4-ethylenedioxythiophene) microflower/graphene composite for superior Li–O2batteries with excellent cycle performance

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56752-56759 ◽  
Author(s):  
S. H. Yoon ◽  
Y. J. Park
Keyword(s):  
Electrochemical Performance ◽  
Electrode Material ◽  
Cycle Performance ◽  
Air Electrode ◽  
Graphene Composite ◽  
Potential Electrode ◽  
Enhanced Electrochemical Performance

A PEDOT microflower/graphene composite was introduced as a potential electrode material for Li–O2batteries with enhanced electrochemical performance.

Hierarchical porous NiCo2O4 nanograss arrays grown on Ni foam as electrode material for high-performance supercapacitors

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20234-20238 ◽  
Author(s):  
Zhenyu Wang ◽  
Yuefei Zhang ◽  
Yonghe Li ◽  
Haoyu Fu
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
Electrode Material ◽  
High Performance ◽  
Ni Foam ◽  
Hierarchical Porous ◽  
One Step ◽  
Calcination Treatment

A novel hierarchical porous NiCo2O4 nanograss array directly grown on Ni foam has been constructed via a simple one-step hydrothermal method combined with a calcination treatment, and possessed high electrochemical performance.

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