Universität zu Köln

Shinde, Nanasaheb M., Xia, Qi Xun, Yun, Je Moon, Shinde, Pritamkumar V., Shaikh, Shoyebmohamad M., Sahoo, Rakesh K., Mathur, Sanjay, Mane, Rajaram S. and Kim, Kwang Ho (2019). Ultra-rapid chemical synthesis of mesoporous Bi2O3 micro-sponge-balls for supercapattery applications. Electrochim. Acta, 296. S. 308 - 317. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-3859

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Abstract

Polycrystalline and mesoporous bismuth oxide (Bi2O3) micro-sponge-balls of 4-7 mu m in diameter comprising of 58-65 (+/- 2) nm upright standing petals, separated by 100-700 (+/- 50) nm crevices, are synthesized directly onto 3D Ni-foam at room-temperature (27 degrees C) using Tritonx-100 surfactant-mediated soft wet chemical method. After knowing the phase purity, surface area, pore-size distribution, micro-sponge-ball-type surface morphology, elemental analysis and binding energy confirmations of Bi2O3, a material with quasi-faradaic redox reactions responsible for supercapattery type behavior, are measured and explored. At a low scan rate, the specific capacitance of Bi2O3 sponge-ball electrode, measured from 0.4 to 1.80 A g(-1) current density, decreases from 559 to 211 F g(-1) which is equivalent to a capacity from 155 to 58 mAh.g(-1). An asymmetric supercapacitor (ASC) device assembly of Bi2O3 sponge-ball electrode with graphite i.e. Bi2O3//graphite demonstrates excellent electrochemical properties with 8 Wh kg(-1) energy density at 2040 W kg(-1) power density, and about 80% cycling retention over 5000 redox cycle operations. A demonstration of LED with full-bright intensity during discharge process of the Bi2O3//graphite ASC device suggests its practical potentiality and industrial viability. (C) 2018 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Shinde, Nanasaheb M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Xia, Qi Xun UNSPECIFIED UNSPECIFIED UNSPECIFIED Yun, Je Moon UNSPECIFIED UNSPECIFIED UNSPECIFIED Shinde, Pritamkumar V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Shaikh, Shoyebmohamad M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sahoo, Rakesh K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Mane, Rajaram S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kim, Kwang Ho UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-156752
DOI:	10.1016/j.electacta.2018.11.044
Journal or Publication Title:	Electrochim. Acta
Volume:	296
Page Range:	S. 308 - 317
Date:	2019
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-3859
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ASYMMETRIC SUPERCAPACITOR; BISMUTH OXIDE; CONTROLLABLE SYNTHESIS; ELECTRODE MATERIAL; FACILE SYNTHESIS; PERFORMANCE; NANOSPHERES; FABRICATION; COMPOSITE; CATHODE Multiple languages Electrochemistry Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15675