Conference proceeding
Reversible Intercalation of Lithium and Sodium Ions into Layered and Tunnel Structured Manganese Oxides: One-Dimensional versus Two-Dimensional Diffusion
LOW-DIMENSIONAL MATERIALS AND DEVICES 2017, v 10349, pp 103490G-103490G-9
01 Jan 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Two manganese oxides built from MnO6 octahedra arranged in layered (Mg-BUS) and tunnel (Mg-TOD) crystal structures are tested for their performance in Li-ion and Na-ion batteries. The layered Mg-BUS consists of an open layered structure with 2D diffusion pathways for charge-carrying ions, while the Mg-TOD is built from structural tunnels (1D diffusion pathways) with the same height as the interlayer spacing in Mg-BUS. Benefiting from the similar chemical composition and crystal structure dimensions of these two materials, we study the role of diffusion channel geometry in reversible ion intercalation/deintercalation. It was found that in both Li-ion and Na-ion batteries, the two materials have similar initial capacities of similar to 120-130 mAh g(-1). The Mg-TOD demonstrated superior cycling stability in both battery systems, indicating the tunnel structure is advantageous for extended cycling. Rate performance experiments show that in Na-ion batteries, Mg-BUS maintains a higher capacity at higher current rates, suggesting the layered structure allows for more facile diffusion of the larger and heavier Na+ ions. Thus, these results indicate that the tunnel walls, while impeding ion diffusion for the larger Na+ ions, provide structural stability during electrochemical cycling, a finding which can help guide the design of electrode materials for intercalation-based batteries.
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Details
- Title
- Reversible Intercalation of Lithium and Sodium Ions into Layered and Tunnel Structured Manganese Oxides: One-Dimensional versus Two-Dimensional Diffusion
- Creators
- Bryan W. Byles - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAEkaterina Pomerantseva - Drexel University
- Contributors
- N P Kobayashi (Editor)A A Talin (Editor)M S Islam (Editor)A V Davydov (Editor)
- Publication Details
- LOW-DIMENSIONAL MATERIALS AND DEVICES 2017, v 10349, pp 103490G-103490G-9
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 9
- Grant note
- CBET-1604483 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000424005400002
- Scopus ID
- 2-s2.0-85033701617
- Other Identifier
- 991019169587204721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary
- Optics