Block copolymer assisted synthesis of VO2 (B) microflowers for supercapacitor application

2021 ◽  
Author(s):  
Nitish Kumar ◽  
Neetu Bansal ◽  
Rahul Salunkhe
Keyword(s):  
Energy Storage ◽  
Block Copolymer ◽  
Metal Oxides ◽  
Power Density ◽  
Supercapacitor Application ◽  
Guest Species ◽  
Nanoporous Metal ◽  
Energy And Power Density

Nanoporous metal oxides are appealing for energy storage as they can interact with guest species from inner and outer surfaces, leading to improved energy and power density performance. This work...

Large-scale fabrication of BCN nanotube architecture entangled on a three-dimensional carbon skeleton for energy storage

2018 ◽  
Vol 6 (42) ◽  
pp. 21225-21230 ◽  
Author(s):  
Hassina Tabassum ◽  
Chong Qu ◽  
Kunting Cai ◽  
Waseem Aftab ◽  
Zibin Liang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Large Scale ◽  
Three Dimensional ◽  
High Energy ◽  
Carbon Skeleton ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Energy And Power Density ◽  
Melamine Foam

The BCN nanotubes have been fabricated on melamine foam (MF) derived three dimensional (3D) nitrogen doped carbon skeleton, which exhibited high energy and power density for the SSC and ASC devices.

Mechanochemical growth of a porous ZnFe2O4 nano-flake thin film as an electrode for supercapacitor application

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45935-45942 ◽  
Author(s):  
M. M. Vadiyar ◽  
S. C. Bhise ◽  
S. K. Patil ◽  
S. A. Patil ◽  
D. K. Pawar ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Specific Capacitance ◽  
Power Density ◽  
Supercapacitor Application ◽  
Supercapacitor Applications ◽  
Energy And Power Density ◽  
Stability Energy

ZnFe2O4 nano-flake thin films prepared using a mechanochemical approach for supercapacitor applications showing excellent specific capacitance, stability, energy and power density.

Performance Comparison between HEV with Three Different Battery-Ultracapacitor Systems

2013 ◽  
Vol 380-384 ◽  
pp. 3086-3088
Author(s):  
Dong Yang Bi ◽  
Yuan Bin Yu ◽  
Xiao Dong Qu
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Storage System ◽  
Energy Storage System ◽  
Performance Comparison ◽  
Driving Cycle ◽  
Energy And Power Density

The Battery-Ultracapacitor System has the advantage of energy and power density, which suit to be used as energy storage system for HEV. This paper did the performance comparison of HEV with three different configurations Battery-Ultracapacitor System in normal and steep driving cycle respectively. According to the results, it summarized the technical advantages and the fitness for HEV of each system.

scholarly journals Advances in the design and application of transition metal oxide-based supercapacitors

2021 ◽  
Vol 19 (1) ◽  
pp. 709-725
Author(s):  
Vanessa Quispe-Garrido ◽  
Gabriel Antonio Cerron-Calle ◽  
Antony Bazan-Aguilar ◽  
José G. Ruiz-Montoya ◽  
Elvis O. López ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Metal Oxides ◽  
Specific Capacitance ◽  
Power Density ◽  
Transition Metal Oxides ◽  
High Specific Capacitance ◽  
Energy Storage Devices ◽  
Promising Alternative ◽  
Hybrid Supercapacitors

Abstract In the last years, supercapacitors (SCs) have been proposed as a promising alternative to cover the power density deficiency presented in batteries. Electrical double-layer SCs, pseudocapacitors, and hybrid supercapacitors (HSCs) have shown very attractive features such as high-power density, long cycle life, and tunable specific capacitance. The advances of these energy storage devices made by transition metal oxides (TMOs) and their production in pseudocapacitors and HSCs depend on chemical composition, crystalline structure, morphology, theoretical capacitance, and oxidation states. In this way, this critical review considers several metal oxides (RuO2, MnO2, V2O5, and Co3O4) and their different configurations with diverse carbon-based materials. Energy storage mechanisms and fundamental principles to understand the promising effect of metal oxides in SCs devices are thoroughly described. Special attention as regards to the energy storage mechanisms relative to the specific capacitance values is presented in the reviewed articles. This review envisages the TMO as a key component to obtain high specific capacitance SCs.

scholarly journals Thermochemical Energy Storage Performance Analysis of (Fe,Co,Mn)Ox Mixed Metal Oxides

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 362
Author(s):  
Yabibal Getahun Dessie ◽  
Qi Hong ◽  
Bachirou Guene Lougou ◽  
Juqi Zhang ◽  
Boshu Jiang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Redox Reaction ◽  
Gas Flow ◽  
Oxygen Exchange ◽  
Engineering Industry ◽  
Oxide Material ◽  
Oxide Materials ◽  
Uptake Ratio

Metal oxide materials are known for their ability to store thermochemical energy through reversible redox reactions. Metal oxides provide a new category of materials with exceptional performance in terms of thermochemical energy storage, reaction stability and oxygen-exchange and uptake capabilities. However, these characteristics are predicated on the right combination of the metal oxide candidates. In this study, metal oxide materials consisting of pure oxides, like cobalt(II) oxide, manganese(II) oxide, and iron(II, III) oxide (Fe3O4), and mixed oxides, such as (100 wt.% CoO, 100 wt.% Fe3O4, 100 wt.% CoO, 25 wt.% MnO + 75 wt.% CoO, 75 wt.% MnO + 25 wt.% CoO) and 50 wt.% MnO + 50.wt.% CoO), which was subjected to a two-cycle redox reaction, was proposed. The various mixtures of metal oxide catalysts proposed were investigated through the thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), energy dispersive X-ray (EDS), and scanning electron microscopy (SEM) analyses. The effect of argon (Ar) and oxygen (O2) at different gas flow rates (20, 30, and 50 mL/min) and temperature at thermal charging step and thermal discharging step (30–1400 °C) during the redox reaction were investigated. It was revealed that on the overall, 50 wt.% MnO + 50 wt.% CoO oxide had the most stable thermal stability and oxygen exchange to uptake ratio (0.83 and 0.99 at first and second redox reaction cycles, respectively). In addition, 30 mL/min Ar–20 mL/min O2 gas flow rate further increased the proposed (Fe,Co,Mn)Ox mixed oxide catalyst’s cyclic stability and oxygen uptake ratio. SEM revealed that the proposed (Fe,Co,Mn)Ox material had a smooth surface and consisted of polygonal-shaped structures. Thus, the proposed metallic oxide material can effectively be utilized for high-density thermochemical energy storage purposes. This study is of relevance to the power engineering industry and academia.

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

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