Abstract:
New types of thin film batteries made from bio-degradable, versatile, man-made sources along with adequate physical properties such as electronic conductivity, inter-diffusion coefficient and better energy storage capacity. Such properties are needed to replace the current technology, based on graphite as anode material as well as LiPF6, LiMnO4, LiCoO2 as electrolyte which are non-biodegradable and scarce elements. Earlier super-capacitors were discovered with higher capacitance but they had low energy storage. Therefore, modern technologies require fast charging as well as long lasting systems which are provided by paper battery. A paper battery is an advanced form of lithium-ion battery, prepared by depositing components such as single walled carbon nanotube over the cellulose substrate. This review paper focuses on the different deposition techniques as well as the properties of different components used in the paper battery. One of the most promising materials showing charge detaining properties in paper batteries is single walled carbon nanotube. Single walled carbon nanotube as the anode material, electrolyte as urea/sweat/blood which is non-toxic, bio-degradable as well as cathode in the form of lithium metal incorporated with single walled carbon nanotube are a primary constituents of a paper battery. This study also reviews the methods for construction of various constituents of a paper battery and discusses the various technologies involved.
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