scholarly journals A Green Synthesis of Grpahene Based Composite for Energy Storage Application

2019 ◽  
Vol 8 (6S4) ◽  
pp. 393-396
Keyword(s):  
Energy Storage ◽  
Electrochemical Impedance ◽  
Synthesis Method ◽  
Electrochemical Performances ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Capacitive Properties ◽  
High Specific Energy ◽  
Technological Platform

In this study, graphene-molybdenum oxide composite materials were prepared via green hydrothermal synthesis method and evaluated as supercapacitor electrodes. The morphology and structure of the composite were examined by using Scanning Electron Microscopy (SEM), Raman spectroscopy. The electrochemical performances of the composite were evaluated by cyclic voltammetry (CV), galvanostatic chargedischarge (CD) method, and electrochemical impedance spectroscopy (EIS). The electrochemical results show that the composite electrodes possess improved specific capacitance of 122 F/g at a scan rate of 5 mV/s, which is about 22% higher that of pure graphene. Additionally, the composite electrodes exhibit good capacitive properties and a high specific energy with superior capacitive retention after 1000 cycles. In contrast to the previously reported systems that are usually complicated and costly, the present work potentially provides a readily scalable technological platform for economic mass production of energy storage devices.

scholarly journals Oxygen-Deficient Stannic Oxide/Graphene for Ultrahigh-Performance Supercapacitors and Gas Sensors

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 372
Author(s):  
Liyang Lin ◽  
Susu Chen ◽  
Tao Deng ◽  
Wen Zeng
Keyword(s):  
Energy Storage ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Synthesis Method ◽  
Rate Capability ◽  
Stannic Oxide ◽  
Energy Storage Devices ◽  
Graphene Nanocomposites ◽  
Storage Devices

The metal oxides/graphene nanocomposites have great application prospects in the fields of electrochemical energy storage and gas sensing detection. However, rational synthesis of such materials with good conductivity and electrochemical activity is the topical challenge for high-performance devices. Here, SnO2/graphene nanocomposite is taken as a typical example and develops a universal synthesis method that overcome these challenges and prepares the oxygen-deficient SnO2 hollow nanospheres/graphene (r-SnO2/GN) nanocomposite with excellent performance for supercapacitors and gas sensors. The electrode r-SnO2/GN exhibits specific capacitance of 947.4 F g−1 at a current density of 2 mA cm−2 and of 640.0 F g−1 even at 20 mA cm−2, showing remarkable rate capability. For gas-sensing application, the sensor r-SnO2/GN showed good sensitivity (~13.8 under 500 ppm) and short response/recovering time toward methane gas. These performance features make r-SnO2/GN nanocomposite a promising candidate for high-performance energy storage devices and gas sensors.

scholarly journals Designing Structural Electrochemical Energy Storage Systems: A Perspective on the Role of Device Chemistry

2022 ◽  
Vol 9 ◽  
Author(s):  
Adriana M. Navarro-Suárez ◽  
Milo S. P. Shaffer
Keyword(s):  
Energy Storage ◽  
Inorganic Compounds ◽  
Electrical Energy ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Energy

Structural energy storage devices (SESDs), designed to simultaneously store electrical energy and withstand mechanical loads, offer great potential to reduce the overall system weight in applications such as automotive, aircraft, spacecraft, marine and sports equipment. The greatest improvements will come from systems that implement true multifunctional materials as fully as possible. The realization of electrochemical SESDs therefore requires the identification and development of suitable multifunctional structural electrodes, separators, and electrolytes. Different strategies are available depending on the class of electrochemical energy storage device and the specific chemistries selected. Here, we review existing attempts to build SESDs around carbon fiber (CF) composite electrodes, including the use of both organic and inorganic compounds to increase electrochemical performance. We consider some of the key challenges and discuss the implications for the selection of device chemistries.

scholarly journals Tailoring the supercapacitive performances of noble metal oxides, porous carbons and their composites

2013 ◽  
Vol 78 (12) ◽  
pp. 2141-2164 ◽  
Author(s):  
Vladimir Panic ◽  
Aleksandar Dekanski ◽  
Branislav Nikolic
Keyword(s):  
Energy Storage ◽  
Metal Oxides ◽  
Noble Metal ◽  
Electrochemical Impedance ◽  
Depth Profiling ◽  
Thin Layers ◽  
Energy Storage Devices ◽  
Capacitive Energy Storage ◽  
Storage Devices ◽  
Noble Metal Oxides

Porous electrochemical supercapacitive materials, as an important type of new-generation energy storage devices, require a detailed analysis and knowledge of their capacitive performances upon different charging/discharging regimes. The investigation of the responses to dynamic perturbations of typical representatives, noble metal oxides, carbonaceous materials and RuO2-impregnated carbon blacks, by electrochemical impedance spectroscopy (EIS) is presented. This presentation follows a brief description of supercapacitive behavior and origin of pseudocapacitive response of noble metal oxides. For all investigated materials, the electrical charging/discharging equivalent of the EIS response was found to obey the transmission line model envisaged as so-called ?resistor/capacitor (RC) ladder?. The ladder features are correlated to material physicochemical properties, its composition and the composition of the electrolyte. Fitting of the EIS data of different supercapacitive materials to appropriate RC ladders enables the in-depth profiling of the capacitance and pore resistance of their porous thin-layers and finally the complete revelation of capacitive energy storage issues.

Electrochemical Performance of PbO2 and PbO2–CNT Composite Electrodes for Energy Storage Devices

2015 ◽  
Vol 15 (1) ◽  
pp. 703-708 ◽  
Author(s):  
M. S. Soumya ◽  
G. Binitha ◽  
P. Praveen ◽  
K. R. V. Subramanian ◽  
Y. S. Lee ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices

Graphene-based composite electrodes for electrochemical energy storage devices: Recent progress and challenges

FlatChem ◽  
2017 ◽  
Vol 6 ◽  
pp. 48-76 ◽  
Author(s):  
Meeree Kim ◽  
Hee Min Hwang ◽  
G. Hwan Park ◽  
Hyoyoung Lee
Keyword(s):  
Energy Storage ◽  
Recent Progress ◽  
Electrochemical Energy Storage ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Energy

Energy Storage: Paper-Based Energy-Storage Devices Comprising Carbon Fiber-Reinforced Polypyrrole-Cladophora Nanocellulose Composite Electrodes (Adv. Energy Mater. 4/2012)

2012 ◽  
Vol 2 (4) ◽  
pp. 494-494 ◽  
Author(s):  
Aamir Razaq ◽  
Leif Nyholm ◽  
Martin Sjödin ◽  
Maria Strømme ◽  
Albert Mihranyan
Keyword(s):  
Energy Storage ◽  
Carbon Fiber ◽  
Composite Electrodes ◽  
Fiber Reinforced ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Carbon Fiber Reinforced ◽  
Energy Mater

Hybrid energy storage devices combining carbon-nanotube/polyaniline supercapacitor with lead-acid battery assembled through a “directly-inserted” method

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26378-26382 ◽  
Author(s):  
Yanli Yin ◽  
Changhong Liu ◽  
Shoushan Fan
Keyword(s):  
Carbon Nanotube ◽  
Energy Storage ◽  
Electrochemical Performances ◽  
Lead Acid Battery ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Lead Acid

CNT/PANI supercapacitor electrodes were “directly-inserted” into lead-acid battery to assemble new hybrid energy storage devices, which showed notably improved electrochemical performances.

scholarly journals Carbon Nanotubes: Applications to Energy Storage Devices

2020 ◽  
Author(s):  
Ruhul Amin ◽  
Petla Ramesh Kumar ◽  
Ilias Belharouak
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Energy Storage ◽  
Storage Systems ◽  
Electronic Conductivity ◽  
Electrochemical Performances ◽  
Energy Storage Systems ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Research Fields

Carbon nanotubes (CNTs) are an extraordinary discovery in the area of science and technology. Engineering them properly holds the promise of opening new avenues for future development of many other materials for diverse applications. Carbon nanotubes have open structure and enriched chirality, which enable improvements the properties and performances of other materials when CNTs are incorporated in them. Energy storage systems have been using carbon nanotubes either as an additive to improve electronic conductivity of cathode materials or as an active anode component depending upon structural and morphological specifications. Furthermore, they have also been used directly as the electrode material in supercapacitors and fuel cells. Therefore, CNTs demand a huge importance due to their underlying properties and prospective applications in the energy storage research fields. There are different kinds of carbon nanotubes which have been successfully used in batteries, supercapacitors, fuel cells and other energy storage systems. This chapter focuses on the role of CNTs in the different energy storage and conversion systems and impact of their structure and morphology on the electrochemical performances and storage mechanisms.

Rational design of double-sandwich-like C@Co,CoO/Co2SiO4/rGO architectures boost electrochemical performances of Co2SiO4 for energy storage devices

2021 ◽  
pp. 133277
Author(s):  
Xueying Dong ◽  
Xuyang Jing ◽  
Yang Mu ◽  
Yuting Yu ◽  
Cui Miao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Rational Design ◽  
Electrochemical Performances ◽  
Energy Storage Devices ◽  
Storage Devices

scholarly journals Fabrication of manganese oxide@nitrogen doped graphene oxide/polypyrrole (MnO2@NGO/PPy) hybrid composite electrodes for energy storage devices

2019 ◽  
Vol 8 (5) ◽  
pp. 4227-4238 ◽  
Author(s):  
Sivalingam Ramesh ◽  
Hemraj M. Yadav ◽  
K. Karuppasamy ◽  
Dhanasekaran Vikraman ◽  
Hyun-Seok Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Manganese Oxide ◽  
Hybrid Composite ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene
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