Engineering of electrodeposited binder-free organic-nickel hydroxide based nanohybrids for energy storage and electrocatalytic alkaline water splitting

2020 ◽  
Vol 4 (3) ◽  
pp. 1320-1331 ◽  
Author(s):  
Rohit G. Jadhav ◽  
Devraj Singh ◽  
Shaikh M. Mobin ◽  
Apurba K. Das
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Water Splitting ◽  
Nickel Hydroxide ◽  
High Specific Capacitance ◽  
Alkaline Water ◽  
Binder Free

A binder-free electrodeposited organic–inorganic multifunctional nanohybrid electrode exhibits high specific capacitance with electrocatalytic water splitting performance.

Hybrid nanostructured C-dot decorated Fe3O4electrode materials for superior electrochemical energy storage performance

2015 ◽  
Vol 44 (19) ◽  
pp. 9221-9229 ◽  
Author(s):  
K. Bhattacharya ◽  
P. Deb
Keyword(s):  
Quantum Dots ◽  
Energy Storage ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Carbon Quantum Dots ◽  
Electrochemical Energy Storage ◽  
The Novel ◽  
Hybrid Nanocomposite ◽  
Storage Performance ◽  
Electrochemical Energy

Here, the novel Fe3O4-C hybrid nanocomposite demonstrates high specific capacitance (S.C.) than the pristine Fe3O4nanospheres due to the presence of the highly conducting carbon quantum dots.

A novel synthesis of ultra thin graphene sheets for energy storage applications using malonic acid as a reducing agent

2014 ◽  
Vol 2 (47) ◽  
pp. 20345-20357 ◽  
Author(s):  
Anil Kumar ◽  
Mahima Khandelwal
Keyword(s):  
Energy Storage ◽  
Potential Energy ◽  
Specific Capacitance ◽  
Malonic Acid ◽  
High Specific Capacitance ◽  
Reducing Agent ◽  
Graphene Sheets ◽  
Novel Synthesis ◽  
Energy Storage Applications ◽  
Charge Discharge

Novel ultrathin graphene sheets (0.41 ± 0.03 nm) with increased sp2 character, high specific capacitance and charge–discharge capability have been synthesized and demonstrated to have potential energy storage applications.

Controllable synthesis of 3D hierarchical bismuth compounds with good electrochemical performance for advanced energy storage devices

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51773-51778 ◽  
Author(s):  
Jinfeng Sun ◽  
Jinqing Wang ◽  
Zhangpeng Li ◽  
Zhigang Yang ◽  
Shengrong Yang
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Controllable Synthesis ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Bismuth Compounds

3D hierarchical bismuth (Bi)-based compounds with controllable sizes and morphologies exhibit high specific capacitance and superior rate capability.

scholarly journals Characteristics of Glycerolized Chitosan: NH4NO3-Based Polymer Electrolyte for Energy Storage Devices with Extremely High Specific Capacitance and Energy Density Over 1000 Cycles

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2718
Author(s):  
Shujahadeen B. Aziz ◽  
M. A. Brza ◽  
Iver Brevik ◽  
M. H. Hamsan ◽  
Rebar T. Abdulwahid ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Polymer Electrolyte ◽  
Specific Capacitance ◽  
Electrochemical Techniques ◽  
High Specific Capacitance ◽  
Transference Number ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
The Impact

In this work, plasticized polymer electrolyte films consisting of chitosan, ammonium nitrate (NH4NO3) and glycerol for utilization in energy storage devices was presented. Various microscopic, spectroscopic and electrochemical techniques were used to characterize the concerned electrolyte and the electrical double-layer capacitor (EDLC) assembly. The nature of complexation between the polymer electrolyte components was examined via X-ray diffraction analysis. In the morphological study, field emission scanning electron microscopy (FESEM) was used to investigate the impact of glycerol as a plasticizer on the morphology of films. The polymer electrolyte (conducting membrane) was found to have a conductivity of 3.21 × 10−3 S/cm. It is indicated that the number density (n), mobility (μ) and diffusion coefficient (D) of ions are increased with the glycerol amount. The mechanism of charge storing was clarified, which implies a non-Faradaic process. The voltage window of the polymer electrolyte is 2.32 V. It was proved that the ion is responsible for charge-carrying via measuring the transference number (TNM). It was also determined that the internal resistance of the EDLC assembly lay between 39 and 50 Ω. The parameters associated with the EDLC assembly are of great importance and the specific capacitance (Cspe) was determined to be almost constant over 1 to 1000 cycles with an average of 124 F/g. Other decisive parameters were found: energy density (18 Wh/kg) and power density (2700 W/kg).

A simple approach to prepare nickel hydroxide nanosheets for enhanced pseudocapacitive performance

RSC Advances ◽  
2014 ◽  
Vol 4 (37) ◽  
pp. 19476-19481 ◽  
Author(s):  
Anjon Kumar Mondal ◽  
Dawei Su ◽  
Shuangqiang Chen ◽  
Bing Sun ◽  
Kefei Li ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Nickel Hydroxide ◽  
High Specific Capacitance ◽  
Simple Approach ◽  
Cycling Stability ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Superior Cycling Stability

A simple microwave-assisted synthesis of Ni(OH)2 nanosheets for supercapacitors with high specific capacitance and superior cycling stability.

Emerging NiCo2O4 Electrode Materials Assembled by Nanosheets for High Performance Hybrid Capacitor with High Specific Capacitance

2020 ◽  
Vol 15 (4) ◽  
pp. 498-503
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Dong Zhang ◽  
Yucai Li ◽  
Shiwei Song ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Power Density ◽  
Rational Design ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Devices

Rational design and construction of hybrid capacitor electrode materials with prominent energy and power density plays an indispensable role for its potential application in energy storage devices. In this work, the nanoflower-like NiCo2O4 samples are successfully prepared on Ni foam via a facile hydrothermal method. The as-fabricated NiCo2O4 samples exhibit superior electrochemical performance with a high specific capacitance of 444.4 F g–1 at 1 A g–1 and excellent capacitance retention. In addition, the as-fabricated device presents a high energy density of 0.298 mWh cm–3 at a power density of 5.71 mW cm–3 and excellent cycle stability with the capacitance retention of 75.6% after 10000 cycles, indicating a promising application as electrodes for energy storage device.

scholarly journals Mesoporous Nickel-Based Zeolite Capsule Complex with Fe3O4 as Electrode for Advanced Supercapacitor

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Lili Song ◽  
Yinghui Han ◽  
Feng Guo ◽  
Yunpeng Jiao ◽  
Yujuan Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Current Density ◽  
High Specific Capacitance ◽  
Positive Electrodes ◽  
Storage Mechanism ◽  
Electrochemical Testing ◽  
Transmission Electron ◽  
Adsorption Analysis ◽  
Energy Storage Properties

A new kind of zeolite capsule complex with ferriferous oxide (Fe3O4) materials was prepared in this work. Its morphology was characterized via the scanning electron microscope (SEM), the high-resolution transmission electron microscopy (HRTEM), N2 adsorption analysis, and X-ray powder diffraction, respectively. The mesoporous nickel-based complex electrodes using substrate coating exhibited excellent energy storage properties through electrochemical testing. The high specific capacitance of 739.8 F g−1 was achieved at the current density of 1 A g−1 in a 6 M KOH solution. The good capacitance retention can retain 72.8% after 1000 cycles in a current density of 1 A g−1. The energy storage mechanism of the nickel-based complex electrodes was also analyzed. Furthermore, the asymmetrical supercapacitors (ASCs) were fabricated using the zeolite capsule complex with Fe3O4 as positive electrodes and the AC as negative electrodes, which performs high specific capacitance, outstanding energy density, superb power density, excellent cycle life, and small internal impedance. Those results suggest that the mesoporous nickel-based zeolite capsule complex with Fe3O4 as an electrode would be an ideal candidate material for supercapacitor applications.

Facile synthesis of a hierarchical CuS/CuSCN nanocomposite with advanced energy storage properties

2018 ◽  
Vol 42 (18) ◽  
pp. 15387-15396 ◽  
Author(s):  
Yasun Y. Kannangara ◽  
Pichaimani Prabunathan ◽  
Jang-Kun Song
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Facile Synthesis ◽  
Energy Storage Properties ◽  
Facile Fabrication ◽  
Storage Properties

Facile fabrication of a CuS/CuSCN nanocomposite electrode for a supercapacitor with a high specific capacitance (1787.3 F g−1).

scholarly journals An Overview on Ruthenium Oxide Composites – Challenging Material for Energy Storage Applications

2018 ◽  
Vol 15 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Dipanwita Majumdar
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Activated Carbons ◽  
Active Material ◽  
Ruthenium Oxide ◽  
High Specific Capacitance ◽  
Electrochemical Performances ◽  
Storage Devices ◽  
Ruthenium Oxides ◽  
Energy Storage Applications

Ruthenium oxides owing to their high specific capacitance have been widely identified as promising materials for electrochemical charge storage devices. However, high priced ruthenium precursors restrict their commercial usage. Accordingly, numerous explorations investigated the influences on capacitive behavior of ruthenium oxide on blending with varied materials like other metal oxides, activated carbons, conducting polymers, CNTs and functionalized graphene systems as composites. The aim had been to optimize the material cost without compromising with but improving the composite electrochemical performances. The scientific explorations reveal that the overall specific capacitance of composites is a strongly related to the ruthenium oxide (RuO2) present in the system since it is the main electro-active material providing the Faradaic pseudocapacitances besides the electrical double layer contributions from the base carbon component of the composite. Major progress in the theoretical and practical research and development in this particular field has enviced a large number of research articles and technical reports in the recent past. The current investigations focus on utilizing minimum amount of metal in the composite; upholding the synergistic effect from the metal oxide and the support (carbon materials generally) to obtain better electrochemical signatures. Optimization of important factors leading to reduced nanostructure agglomeration, minimum electrostatic resistance and ultrafast proton/electrons diffusion through the hollow porous structures may ultimately result to the theoretically expected specific capacitance. Nonetheless, to the best of knowledge of the author, there is no systematic review available pertaining to recent advancement of the composites of RuO2. Thus, this overview categorically narrates recent progresses on the fabrication, performances and achievements of ruthenium oxide composite as electrode material in energy storage applications which will be beneficial especially to the newcomers in this field of research.

Flexible symmetrical planar supercapacitors based on multi-layered MnO2/Ni/graphite/paper electrodes with high-efficient electrochemical energy storage

2014 ◽  
Vol 2 (9) ◽  
pp. 2985-2992 ◽  
Author(s):  
Jin-Xian Feng ◽  
Qi Li ◽  
Xue-Feng Lu ◽  
Ye-Xiang Tong ◽  
Gao-Ren Li
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
High Specific Capacitance ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Energy Storage Device ◽  
Cycle Stability ◽  
Electrodeposition Method ◽  
High Efficient ◽  
Electrochemical Energy

We develop a cheap and simple drawing-electrodeposition method to fabricate highly flexible MnO2/Ni/graphite/paper electrodes and assemble a paper-based energy storage device with high specific capacitance and excellent cycle stability.

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