Quinone-Decorated Carbon Materials for Capacitive Energy Storage Applications

2014 ◽  
Vol 1679 ◽  
Author(s):  
Mikolaj Meller ◽  
Krzysztof Fic ◽  
Elzbieta Frackowiak

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.

2021 ◽  
Vol 43 ◽  
pp. 103218
Author(s):  
Narendra Pal Singh Chauhan ◽  
Sapana Jadoun ◽  
Bharatraj Singh Rathore ◽  
Mahmood Barani ◽  
Payam Zarrintaj

2020 ◽  
Vol 8 (15) ◽  
pp. 7066-7082 ◽  
Author(s):  
Han Hu ◽  
Mingbo Wu

Recent progress in constructing carbon materials using heavy oil-derived by-products for energy storage has been summarized.


2020 ◽  
Vol 8 (30) ◽  
pp. 10257-10265 ◽  
Author(s):  
Liang Sun ◽  
Zhicheng Shi ◽  
Liang Liang ◽  
Shuang Wei ◽  
Huanlei Wang ◽  
...  

Layer-structured nanocomposites with concurrently improved dielectric permittivity and breakdown strength, as well as superior energy-storage performances are obtained.


2015 ◽  
Vol 830-831 ◽  
pp. 505-508 ◽  
Author(s):  
R. Sudheer ◽  
K. Narayan Prabhu

In recent years phase change materials have emerged to be ideal energy storage materials for their higher energy density over sensible heat storing materials. Use of phase change materials (PCM) have been successfully implemented at lower temperature applications with various organic compounds. On the other hand, high temperature applications have been solely dominated by various salts, their eutectics and mixtures as phase change materials. This work discusses the suitability of metals and alloys for thermal energy storage applications as the phase change material. Metals offer superior thermal conductivities with considerable energy density compared to salts. Here, two alloys namely, Sn-0.3Ag-0.7Cu (SAC) solidifying over 212-224°C and ZA8 (Zn-8%Al) solidifying over 378-405°C have been studied. Thermal analysis of PCMs using Computer Aided Cooling Curve Analysis (CA-CCA) and DSC technique were performed to predict the solidification path. In addition to this, Newtonian technique was employed to estimate the latent heat of fusion for these phase change materials. Cooling rate curves and Fraction Solid curves offered a better insight into their ability to receive and discharge heat over the concerned temperature range.


2014 ◽  
Vol 7 (4) ◽  
pp. 1250-1280 ◽  
Author(s):  
Marta Sevilla ◽  
Robert Mokaya

This review presents the state-of-the-art with respect to synthesis of activated carbons, and their use as electrode materials in supercapacitors and as hydrogen storage materials.


2018 ◽  
Vol 6 (17) ◽  
pp. 7566-7572 ◽  
Author(s):  
Yi Zhao ◽  
Jinzhang Liu ◽  
Na Wang ◽  
Qi Li ◽  
Mingjun Hu

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


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