Browsing by Author "Abhay D. Deshmukh"

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Radially aligned CNTs derived carbon hollow cylinder architecture for efficient energy storage
(Elsevier Ltd, 2020) Prashant Tripathi; Ashish Bhatnagar; A. Ramesh; Alok K. Vishwakarma; Sweta Singh; Deepa B. Bailmare; Abhay D. Deshmukh; Bipin Kumar Gupta; O.N. Srivastava
To explore the practical feasibility of exotic carbon, various types of geometries of CNT configurations have been investigated such as CNT film, vertically aligned nanotubes, 3D pillared graphene-CNT network etc. High-performance and applicability of CNT derived electrodes in electrochemical energy storage depend on the structural design and high aspect ratio geometry. Here, we have strategically designed electrode derived from a special type of 3D geometry known as carbon hollow cylinders (CHCs) made up of CNTs arranged in the radial direction. The exceptional geometry provides a high areal capacity of 513.92 C/cm2 at an applied current density of 16 mA/cm2. Also, high specific energy of 41.13 mWh/cm2 at the specific power of 5694.92 mW/cm2 originated from supercapacitors and battery response of the electrode material was attained, which idealized the fundamental of theory of composite type electrode material. Hence, proposed geometry sets a stepping stone for a paradigm shift in light-weight electrode which is not only binder-free but also designed with a special geometry that provides an exceptional higher areal capacity with stable network. © 2020 Elsevier Ltd