Conference proceeding
Synthesis of Hybrid Layered Electrode Materials via Chemical Pre-Intercalation of Linear Organic Molecules
LOW-DIMENSIONAL MATERIALS AND DEVICES, v 10725, pp 107250S-107250S-9
01 Jan 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Chemical pre-intercalation is a low-temperature, scalable synthesis method that utilizes a sol-gel process to form layered oxides with positively-charged species inserted between the layers. We have shown that this approach can be used to successfully intercalate Li+, Na+, K+, Mg2+, and Ca2+ ions into the crystal structure of bilayered vanadium oxide (delta-V2O5). 1 Through this ion-intercalation, the interlayer spacing of the delta-MgxV2O5 (M=Li, Na, K, Mg, and Ca) structure can be controlled between 9.6 angstrom (delta-KxV2O5) and 13.4 angstrom (delta-MgxV2O5). 1 Moreover, the expanded spacing achieved for the delta-MgxV2O5 phase corresponded to increased electrochemical stability in both Li- and Na-ion cells.[1] While this study identified a correlation between expanded interlayer spacing and improved electrochemical stability over cycling, chemical pre-intercalation of ions does not allow for expansion beyond that exhibited by the delta-MgxV2O5 structure.
In this work, we show that further expansion of the interlayer spacing can be achieved via pre-intercalation of positively-charged linear, organic cations. We report synthesis of hybrid inorganic/organic materials with a 1D nanobelt morphology. The layered structure of the hybrids is confirmed by both XRD and TEM analysis. delta-V2O5 preintercalated with cetyltrimethylammonia ions, CTA(+), demonstrated the interlayer spacings of all samples (31 angstrom), more than twice larger than the largest interlayer spacing achieved via pre-intercalation of inorganic ions. The effects of carbon chain-length and positively charged nitrogen termini on the interlayer spacing and electrochemical stability is investigated, with two N-termini on the cation (DMO+) resulting in increased electrochemical stability of the preintercalated phase.
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Details
- Title
- Synthesis of Hybrid Layered Electrode Materials via Chemical Pre-Intercalation of Linear Organic Molecules
- Creators
- Mallory Clites - Drexel UniversityEkaterina 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, v 10725, pp 107250S-107250S-9
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 9
- Grant note
- DMR-1609272 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000450922600006
- Scopus ID
- 2-s2.0-85055440316
- Other Identifier
- 991019168155504721
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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
- Physics, Applied