scholarly journals Synthesis of Carbon Nanomaterials from Biomass Utilizing Ionic Liquids for Potential Application in Solar Energy Conversion and Storage

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3945 ◽  
Author(s):  
Kudzai Mugadza ◽  
Annegret Stark ◽  
Patrick G. Ndungu ◽  
Vincent O. Nyamori
Keyword(s):  
Ionic Liquids ◽  
Carbon Nanomaterials ◽  
Solvent System ◽  
Crystalline Cellulose ◽  
Storage Devices ◽  
Synthesis Properties ◽  
Energy Conversion And Storage ◽  
Energy Harnessing ◽  
And Storage

Considering its availability, renewable character and abundance in nature, this review assesses the opportunity of the application of biomass as a precursor for the production of carbon-based nanostructured materials (CNMs). CNMs are exceptionally shaped nanomaterials that possess distinctive properties, with far-reaching applicability in a number of areas, including the fabrication of sustainable and efficient energy harnessing, conversion and storage devices. This review describes CNM synthesis, properties and modification, focusing on reports using biomass as starting material. Since biomass comprises 60–90% cellulose, the current review takes into account the properties of cellulose. Noting that highly crystalline cellulose poses a difficulty in dissolution, ionic liquids (ILs) are proposed as the solvent system to dissolve the cellulose-containing biomass in generating precursors for the synthesis of CNMs. Preliminary results with cellulose and sugarcane bagasse indicate that ILs can not only be used to make the biomass available in a liquefied form as required for the floating catalyst CVD technique but also to control the heteroatom content and composition in situ for the heteroatom doping of the materials.

In-Situ Growth of MOF for Energy Conversion and Storage Devices

2021 ◽  
Author(s):  
M. Adil ◽  
Mohammad A. Abdelkareem ◽  
Enas T. Sayed ◽  
Cristina Rodriguez ◽  
Mohamad Ramadan ◽  
...  
Keyword(s):  
Energy Conversion ◽  
In Situ Growth ◽  
Storage Devices ◽  
Energy Conversion And Storage ◽  
And Storage

scholarly journals SYNTHESIS AND ELECTROCHEMICAL PROPERTIES OF POROUS CNTs-FERRITE HYBRID NANOSTRUCTURES FOR SUPERCAPACITOR

2019 ◽  
Vol 57 (1) ◽  
pp. 58 ◽  
Author(s):  
Le Trong Lu ◽  
Le Thi Thanh Tam ◽  
Doan Thanh Tung ◽  
Ngo Thanh Dung ◽  
Hoang Tran Dung ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Solvothermal Method ◽  
Scale Up ◽  
Hybrid Nanostructures ◽  
Storage Devices ◽  
Energy Conversion And Storage ◽  
Hybrid Aerogels ◽  
The Individual ◽  
And Storage

Carbon nanotubes (CNTs)-ferrites hybrid nanomaterials have attracted extensive research interest owing to their large specific surfae area, high electrical, thermal conductiviy and outstanding electrochemical properties, which are widely investigated for energy conversion and storage devices. Regular syntheses rely mainly on the in situ growth of ferrite nanoparticles (NPs) in the presence of the preformed CNTs. It is very challenging to control the composition and morphology of the individual components, and to scale-up the synthesis. In this work, ferrite NPs were prepared by  solvothermal method. Porous (3D) CNTs-ferrites hybrid aerogels were fabricated by using freeze gelation method. The results indicate that the obtained 3D CNTs-ferrites aerogels were very porous, highly electrical conductive and have good electrochemical properties.

Graphene, related two-dimensional crystals, and hybrid systems for energy conversion and storage

Science ◽  
2015 ◽  
Vol 347 (6217) ◽  
pp. 1246501 ◽  
Author(s):  
Francesco Bonaccorso ◽  
Luigi Colombo ◽  
Guihua Yu ◽  
Meryl Stoller ◽  
Valentina Tozzini ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Hybrid Systems ◽  
Dye Sensitized Solar Cells ◽  
Ionic Species ◽  
Two Dimensional ◽  
Storage Devices ◽  
Energy Needs ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Sensitized Solar Cells

Graphene and related two-dimensional crystals and hybrid systems showcase several key properties that can address emerging energy needs, in particular for the ever growing market of portable and wearable energy conversion and storage devices. Graphene’s flexibility, large surface area, and chemical stability, combined with its excellent electrical and thermal conductivity, make it promising as a catalyst in fuel and dye-sensitized solar cells. Chemically functionalized graphene can also improve storage and diffusion of ionic species and electric charge in batteries and supercapacitors. Two-dimensional crystals provide optoelectronic and photocatalytic properties complementing those of graphene, enabling the realization of ultrathin-film photovoltaic devices or systems for hydrogen production. Here, we review the use of graphene and related materials for energy conversion and storage, outlining the roadmap for future applications.

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