Browsing by Author "Kumar, Pradip"
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Item Advanced sustainable solid state energy storage devices based on FeOOH nanorod loaded carbon@PANI electrode: GCD cycling and TEM correlation(Elsevier Ltd, 2023-03-09T00:00:00) Singh, Nirbhay; Tanwar, Shweta; Kumar, Pradip; Sharma, A.L.; Yadav, B.C.A cost-effective, environment-friendly polyaniline-wrapped activated carbon-FeOOH ternary composite electrode is developed by two steps facile method for the efficient and sustainable energy storage device. The HR-TEM analysis before and after cyclic stability (20 k cycles of charging-discharging) shows electrode structural stability and potentiality as an energy storage device. The ternary composite utilizes polyaniline (PANI) maximum, which reflects an increase in voltage window, and electrochemical performance. The voltammetry (cyclic) and galvanostatic charge-discharge (GCD) examination display specific capacitance of 213 F g?1 at 10 mV s?1 and 234 F g?1 at 2 mA sec?1 for 20 wt%. The drastic variation through EIS (electrochemical impedance spectroscopy) in equivalent series resistance is seen by the nyquist plot before and after cycling. The specific capacitance is 234.5 F g?1 at 1 Ag?1 for 20 wt% PANI composite. The energy(Ed) and power density (Pd) of the device are 45 W h kg?1 and 5997 W kg?1 at 2 mA and 20 mA, respectively. The fabricated device shows very advanced capacity retention of up to 89% and coulombic efficiency of 100% till the last 20 k cycles with a stable potential window. The fabricated device can glow LED panels (consisting of 26 LEDs) for up to 5.30 min. The device retention profile and stable potential window show its advanced structural stability up to commercial-scale cycling, which signifies the additional role of PANI. The HR-TEM and electrochemical results after cyclic stability are in correlation. � 2023 Elsevier B.V.Item Does Tourism Foster Economic Growth in BRICS Region? Empirical Evidence over 1995-2019(ASERS Publishing House, 2022-12-02T00:00:00) Mishra, P.K.; Sahoo, Debasis; Rout, Himanshu B.; Chaini, S.R.; Kumar, PradipIn the BRICS region, international tourism is considered a significant contributor to employment, forex earnings, and gross domestic product. In this context, this study examined the impact of tourism on the growth of BRICS economies by employing PMG based ARDL panel data analysis technique over an augmented neo-classical growth model during a period from 1995 to 2019. The results support a positive impact of international tourism on the growth of BRICS nations when their levels of human development are controlled in the long run. So, this study adds another feather to the extant empirical evidence of the tourism-led growth hypothesis in the BRICS region. Therefore, the policies of tourism sector development/expansion can supplement in achieving an elevated real economic growth in BRICS economies. � 2022 by ASERS� Publishing. All rights reserved.Item International Tourism, Financial Deepening and Economic Growth: Insights from Southern African Countries(ASERS Publishing House, 2023-06-24T00:00:00) Mishra, P.K.; Rout, Himanshu B.; Sahoo, Debasis; Kumar, Pradip; Chaini, S.R.The impact of tourism development on financial development via its effects on economic growth and country openness in Southern African countries for the period 1995 to 2019 was examined relying on pooled mean group-based estimation of panel ARDL regression, and the results lend supports to the tourism-led financial development hypothesis in these countries in the long-run. The findings infer that the development of the travel and tourism sector can spur financial development as the former by contributing to output, employment and income warrant an enhanced role of the financial sector. � 2023 The Author(s). Published by ASERS Publishing 2023.