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Proceedings Paper

Chemical modification approaches for improved performance of Na-ion battery electrodes
Author(s): Bryan Byles; Mallory Clites; Ekaterina Pomerantseva
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Paper Abstract

Na-ion batteries have received considerable attention in recent years but still face performance challenges such as limited cycle lifetime and low capacities at high current rates. In this work, we propose novel combinations of preand post-synthesis treatments to modify known Na-ion battery electrode materials to achieve enhanced electrochemical performance. We work with two model metal oxide materials to demonstrate the effectiveness of the different treatments. First, wet chemical preintercalation is combined with post-synthesis aging, hydrothermal treatment, and annealing of α-V2O5, resulting in enhanced capacity retention in a Na-ion battery system. The hydrothermal treatment resulted in an increased specific capacity of nearly 300 mAh/g. Second, post-synthesis acid leaching is performed on α- MnO2, also resulting in improved electrochemical capacity. The chemical, structural, and morphological changes brought about by the modifications are fully characterized.

Paper Details

Date Published: 26 August 2015
PDF: 10 pages
Proc. SPIE 9553, Low-Dimensional Materials and Devices, 955313 (26 August 2015); doi: 10.1117/12.2188852
Show Author Affiliations
Bryan Byles, Drexel Univ. (United States)
Mallory Clites, Drexel Univ. (United States)
Ekaterina Pomerantseva, Drexel Univ. (United States)

Published in SPIE Proceedings Vol. 9553:
Low-Dimensional Materials and Devices
Nobuhiko P. Kobayashi; A. Alec Talin; M. Saif Islam; Albert V. Davydov, Editor(s)

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