scholarly journals Surface Science of Graphene-Based Monoliths and Their Electrical, Mechanical, and Energy Applications

2020 ◽  
Author(s):  
Mujtaba Ikram ◽  
Sana Arbab ◽  
Bilal Tariq ◽  
Rayha Khan ◽  
Husnain Ahmad ◽  
...  
Keyword(s):  
High Temperature ◽  
Smart Materials ◽  
Porous Carbon ◽  
Dielectric Materials ◽  
Point Of View ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Energy Applications ◽  
Monolithic Ceramics ◽  
Temperature Applications

Ceramic monoliths are applied in many insulating and high resistive engineering applications, but the energy application of ceramics monoliths is still vacant due to less conductivity of monolithic ceramics (for example, in silica- and alumina-based hybrids). This book chapter is a significant contribution in the graphene industry as it explains some novel and modified fabrication techniques for ceramics-graphene hybrids. The improved physical properties may be used to set ceramics-graphene hybrids as a standard for electrical, mechanical, thermal, and energy applications. Further, silica-rGO hybrids may be used as dielectric materials for high-temperature applications due to improved dielectric properties. The fabricated nano-assembly is important for a technological point of view, which may be further applied as electrolytes, catalysts, and conductive, electrochemically active, and dielectric materials for the high-temperature applications. In the end, this chapter discussed porous carbon as a massive source of electrochemical energy for supercapacitors and lithium-ion batteries. Carbon materials which are future of energy storage devices because of their ability to store energy in great capacity, so sustainability through smart materials got a huge potential, so hereby keeping in view all the technological aspects, this chapters sums up important contribution of graphene and porous carbon for applied applications.

scholarly journals New insight into high-temperature driven morphology reliant CoMoO4 flexible supercapacitors

2015 ◽  
Vol 39 (8) ◽  
pp. 6108-6116 ◽  
Author(s):  
John Candler ◽  
Tyler Elmore ◽  
Bipin Kumar Gupta ◽  
Lifeng Dong ◽  
Soubantika Palchoudhury ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Flexible Supercapacitors ◽  
Insight Into ◽  
Temperature Applications

The next generation of flexible energy storage devices based on CoMoO4 for high-temperature applications were fabricated and tested.

Ultrathin Carbon Nanosheets for Highly-efficient Capacitive K-ion and Zn-ion Storage

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Metal Ion ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
High Efficient ◽  
Ion Storage

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>

scholarly journals Nanostructured ZnFe2O4: An Exotic Energy Material

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1286
Author(s):  
Murtaza Bohra ◽  
Vidya Alman ◽  
Rémi Arras
Keyword(s):  
Data Storage ◽  
Smart Materials ◽  
Energy Demand ◽  
Ceramic Materials ◽  
Magnetic Data ◽  
Processing Route ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Reduced Toxicity ◽  
Cation Arrangement

More people, more cities; the energy demand increases in consequence and much of that will rely on next-generation smart materials. Zn-ferrites (ZnFe2O4) are nonconventional ceramic materials on account of their unique properties, such as chemical and thermal stability and the reduced toxicity of Zn over other metals. Furthermore, the remarkable cation inversion behavior in nanostructured ZnFe2O4 extensively cast-off in the high-density magnetic data storage, 5G mobile communication, energy storage devices like Li-ion batteries, supercapacitors, and water splitting for hydrogen production, among others. Here, we review how aforesaid properties can be easily tuned in various ZnFe2O4 nanostructures depending on the choice, amount, and oxidation state of metal ions, the specific features of cation arrangement in the crystal lattice and the processing route used for the fabrication.

Mullite Whisker Reinforced Zirconia Toughened Alumina for High Temperature Applications

2014 ◽  
Author(s):  
Taylor Robertson ◽  
Xiao Huang ◽  
Richard Kearsey
Keyword(s):  
High Temperature ◽  
Cost Effective ◽  
Mechanical Tests ◽  
Processing Route ◽  
Molten Salt Method ◽  
The Matrix ◽  
Mullite Whiskers ◽  
Monolithic Ceramics ◽  
Zirconia Toughened Alumina ◽  
Temperature Applications

Particulate enhanced oxide ceramics are an attractive class of materials for high temperature applications because they possess many of the high temperature capabilities of monolithic ceramics but also have enhanced mechanical properties due to their multi-phase structure. High temperature structural ceramics have the potential to operate above at higher temperatures than current super alloys; however, processing costs and lack of reliability has prevented their commercialization. In this work a particulate reinforced ceramic composed entirely of oxides is proposed as a more oxidation resistant and cost effective structural ceramic which will have potentially improved resistance to environmental degradation. Zirconia Toughened Alumina (ZTA), as the matrix, has enhanced toughness, strength, and creep resistance over single phase alumina or zirconia. ZTA can further be strengthened by the incorporation of SiC type whiskers; however, these whiskers are prone to deterioration at temperatures above 1000°C through oxidation. In this work Mullite, in whisker form, is proposed as the reinforcement to ZTA due to its stability in oxidizing atmospheres at high temperatures. Mullite whiskers are grown through the molten salt method and incorporated into the ZTA matrix using a colloidal processing route in this study. The composition of the ZTA matrix is 15wt% Yttria stabilized Zirconia (YSZ), 85 wt% α-Alumina. The Mullite whiskers make up 20 vol% of the composite, yielding a final composition of 71.6 wt% Alumina, 12.7 wt% YSZ, and 15.6 wt% Mullite. The green compacts are fired in a two stage sintering process incorporating atmospheric pressure sintering to 92% density (seal the pore channels) and then hot isostatic pressure pressing (HIP) to increase the density. Samples have been tested for room temperature flexural strength using a three point bend test and fracture toughness through Gong’s Vickers indentation method. The results of microstructure study and mechanical tests are reported in this paper.

Unimpeded migration of ions in carbon electrodes with bimodal pores at an ultralow temperature of −100 °C

2019 ◽  
Vol 7 (27) ◽  
pp. 16339-16346 ◽  
Author(s):  
Xi Wang ◽  
Jiang Xu ◽  
Joselito M. Razal ◽  
Ningyi Yuan ◽  
Xiaoshuang Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
High Altitude ◽  
Space Missions ◽  
Carbon Electrodes ◽  
Discharge Energy ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ultralow Temperature ◽  
Temperature Applications

The ability to rapidly charge (and discharge) energy storage devices at extremely low temperature (down to −100 °C) is critical for low-temperature applications such as high altitude exploration and space missions.

Rich sulfur doped porous carbon materials derived from ginkgo leaves for multiple electrochemical energy storage devices

2017 ◽  
Vol 5 (5) ◽  
pp. 2204-2214 ◽  
Author(s):  
Enchao Hao ◽  
Wei Liu ◽  
Shuang Liu ◽  
Yuan Zhang ◽  
Huanlei Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Multilayered Structure ◽  
Electrochemical Energy Storage ◽  
Energy Storage Devices ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
Excellent Electrochemical Performance

Based on the unique multilayered structure of ginkgo leaves, interconnected carbon nanosheets with rich micro/meso pores have been fabricated, showing excellent electrochemical performance in multiple energy storage devices.

Metal coordination enhanced Ni–Co@N-doped porous carbon core–shell microsphere bi-functional electrocatalyst and its application in rechargeable zinc/air batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 83386-83392 ◽  
Author(s):  
Mengran Wang ◽  
Yexiang Liu ◽  
Kai Zhang ◽  
Fan Yu ◽  
Furong Qin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
High Power ◽  
Porous Carbon ◽  
Core Shell ◽  
High Power Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Carbon Core ◽  
Zinc Air Batteries

Primary and rechargeable zinc/air batteries could be the next generation of energy storage devices because of their high power density and safety.

Smart and flexible supercapacitor based on a porous carbon nanotube film and polyaniline hydrogel

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 24946-24951 ◽  
Author(s):  
Xi Xiang ◽  
Wujun Zhang ◽  
Zhengpeng Yang ◽  
Yongyi Zhang ◽  
Haijiao Zhang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Storage ◽  
Porous Carbon ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Flexible Supercapacitor ◽  
Carbon Nanotube Film ◽  
Flexible Supercapacitors

Smart and flexible supercapacitors are of ever increasing importance for energy-storage devices.

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