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Journal of Materials Engineering and Applications

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Recent Advances in the development of supercapacitor componentsemploying nanocellulose based polymer composites

Author(s): Ahankari Sandeep Sureshrao

With rapid fossil fuel consumption and ecological concerns, alternative options of green energy development and its efficient storage technology is an emergent area of research. Nanocellulose (NC) is observed a very-promising, sustainable and environmentally friendly nanomaterial for green and renewable electronics for advanced electrochemical energy conversion/ conservation devices. NC has high strength, modulus, and aspect ratio. It is stable in most of the solvents and the stability has wide electrochemical window. Hence it can be used as a separator, electrolyte, or binder material also. The nano-order scale of NC offers a very high surface area that assists in controlling the pore structure in separators. It offers a perfect diffusion path for an electrolytic solution and facilitates the transport of ions. If used as an electrode, NC provides mechanical strength and flexibility to such electrodes (films or aerogels) and offers very high surface area that improves its capacitive performance. Conductivity of such an electrode can be increased by loading it with conductive carbonaceous materials like CNTs, graphene oxides (GO) etc. The pore size and its distribution in NC affect the electrolyte uptake, ionic conductivity and hence the performance of supercapacitor. It is very much required to control these parameters and prevent the collapse of the web structure of NC for improved performance in energy storage systems in 2D structures. To impart flexibility to the electronic storage systems, the processing route to be selected must be the one that can maintain the high aspect ratio of the NC. Solvent casting, filtration methods maintain the aspect ratio of the NC but are not industrially viable techniques. On the contrary, extrusion and film making can be a commercial method provided an indepth analysis of the effect of various processing parameters on the properties of resultant nanocomposites is done. Aspect ratio of the melt processing technique is found lesser compared to laboratory technique

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Citations : 30

Journal of Materials Engineering and Applications received 30 citations as per Google Scholar report