Rational selection of small aromatic molecules to functionalize graphene for enhancing capacitive energy storage

2018 ◽  
Vol 6 (17) ◽  
pp. 7566-7572 ◽  
Author(s):  
Yi Zhao ◽  
Jinzhang Liu ◽  
Na Wang ◽  
Qi Li ◽  
Mingjun Hu
Keyword(s):  
Energy Storage ◽  
Hydroxyl Groups ◽  
Comparison Study ◽  
Rational Selection ◽  
Capacitive Energy Storage ◽  
Aromatic Molecules ◽  
Selection Of

A comparison study on using small aromatic molecules containing amino or hydroxyl groups, or both, to endow graphene with pseudocapacitance.

Quinone-Decorated Carbon Materials for Capacitive Energy Storage Applications

2014 ◽  
Vol 1679 ◽  
Author(s):  
Mikolaj Meller ◽  
Krzysztof Fic ◽  
Elzbieta Frackowiak
Keyword(s):  
Energy Storage ◽  
Carbon Materials ◽  
Activated Carbons ◽  
Energy Storage Materials ◽  
Surface Grafting ◽  
Hydroxyl Groups ◽  
Carbon Electrode ◽  
Capacitive Energy Storage ◽  
Before And After ◽  
Energy Storage Applications

ABSTRACTQuinone/hydroquinone redox couple has been utilized as a source of additional capacitance in typical capacitive energy-storage materials. By generation of functional groups on the carbon electrode surface (grafting) directly from electrolyte there is a possibility to enhance the capacitance value significantly. Hydroxybenzene solutions with different substitution of hydroxyl groups were effectively used for this target. Electrochemical and physicochemical properties of activated carbons have been investigated before and after grafting process.

scholarly journals The use of cement concrete pavements for roads, depending on climatic conditions

2019 ◽  
Vol 13 (3) ◽  
pp. 235-240
Author(s):  
Iryna Solonenko
Keyword(s):  
European Union ◽  
Statistical Models ◽  
Road Network ◽  
The European Union ◽  
Rational Selection ◽  
Cement Concrete ◽  
The Road ◽  
Road Pavement ◽  
Operational Characteristics ◽  
Selection Of

The development of road network infrastructure is an important component of the economic development of the European Union. Updating of the road network contributes to the integration of the economies of countries into a coherent whole. The road network provides the free movement of citizens, the movement of goods and the effective implementation of various services. The increase in the length of the road network leads to an increase in the financial and material costs necessary to ensure its maintenance and repair. One of the ways to reduce costs is by strengthening the physic-mechanical and operational characteristics of the pavement due to the widespread use of cement concrete. The quality of the pavement of cement concrete depends largely on the rational selection of its composition. This allows a significant increase in the durability of road pavement. The purpose of the research was: the development of recommendations for the rational selection of the composition of the road pavement material of cement concrete, aimed at upgrading longevity, and taking into account its frost resistance grade. According to the goal, the following tasks were developed: the analyses of the climatic zones in which the road network of the European Union is located; the development of a research plan, a selection of the response function and influence factors; the study of physico-mechanical and operational characteristics of the researched material of road pavement; on the basis of the obtained data, the calculation of the complex of experimental-statistical models, which describe the physico-mechanical and operational characteristics of the road pavement material; on the basis of experimental statistical models, a method was proposed for selecting the rational compositions of the cement concrete pavement road material depending on the conditions of its application. The results presented in the article can be used in engineering and scientific practice for the selection of road pavement from cement concrete for highways.

scholarly journals Air activation of charcoal monoliths for capacitive energy storage

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15118-15130
Author(s):  
Yu Ma ◽  
Hanqin Liang ◽  
Jinwei Yin ◽  
Dongxu Yao ◽  
Yongfeng Xia ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Capacitor ◽  
Activation Mechanism ◽  
Capacitive Energy Storage ◽  
Waste Wood

Charcoal monoliths derived from waste wood were activated with air for the application of electrochemical capacitor electrodes and an insight was given into the activation mechanism.

Optimal selection of energy storage nodes based on improved cumulative prospect theory in China

2020 ◽  
Vol 12 (6) ◽  
pp. 064101
Author(s):  
Jicheng Liu ◽  
Zhenzhen Wang ◽  
Yu Yin ◽  
Yinghuan Li ◽  
Yunyuan Lu
Keyword(s):  
Energy Storage ◽  
Prospect Theory ◽  
Cumulative Prospect Theory ◽  
Optimal Selection ◽  
Selection Of

scholarly journals Preparation and Applications of Fluorinated Graphenes

2021 ◽  
Vol 7 (1) ◽  
pp. 20 ◽  
Author(s):  
Yasser Ahmad ◽  
Nicolas Batisse ◽  
Xianjue Chen ◽  
Marc Dubois
Keyword(s):  
Energy Storage ◽  
Chemical Bonding ◽  
Gas Sensing ◽  
Present Review ◽  
Graphite Fluoride ◽  
Fluorinated Graphene ◽  
Selection Of

The present review focuses on the numerous routes for the preparation of fluorinated graphene (FG) according to the starting materials. Two strategies are considered: (i) addition of fluorine atoms on graphenes of various nature and quality and (ii) exfoliation of graphite fluoride. Chemical bonding in fluorinated graphene, related properties and a selection of applications for lubrication, energy storage, and gas sensing will then be discussed.

Boosting up the capacitive energy storage performances of lead-free ceramics via grain engineering for pulse power applications

2021 ◽  
Vol 47 (2) ◽  
pp. 2869-2873
Author(s):  
Yang Jin ◽  
Jinfeng Wang ◽  
Lin Jiang ◽  
Yao Yao ◽  
Yangjue Huang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Pulse Power ◽  
Lead Free ◽  
Capacitive Energy Storage ◽  
Lead Free Ceramics ◽  
Grain Engineering

scholarly journals Layered double hydroxide membrane with high hydroxide conductivity and ion selectivity for energy storage device

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jing Hu ◽  
Xiaomin Tang ◽  
Qing Dai ◽  
Zhiqiang Liu ◽  
Huamin Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Ion Selectivity ◽  
Storage Device ◽  
Hydroxyl Groups ◽  
Flow Battery ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ions Transport ◽  
Double Hydroxides

AbstractMembranes with fast and selective ions transport are highly demanded for energy storage devices. Layered double hydroxides (LDHs), bearing uniform interlayer galleries and abundant hydroxyl groups covalently bonded within two-dimensional (2D) host layers, make them superb candidates for high-performance membranes. However, related research on LDHs for ions separation is quite rare, especially the deep-going study on ions transport behavior in LDHs. Here, we report a LDHs-based composite membrane with fast and selective ions transport for flow battery application. The hydroxide ions transport through LDHs via vehicular (standard diffusion) & Grotthuss (proton hopping) mechanisms is uncovered. The LDHs-based membrane enables an alkaline zinc-based flow battery to operate at 200 mA cm−2, along with an energy efficiency of 82.36% for 400 cycles. This study offers an in-depth understanding of ions transport in LDHs and further inspires their applications in other energy-related devices.

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