Visualization of lithium-ion transport and phase evolution within and between manganese oxide nanorods
- Southeast Univ., Nanjing (China). SEU-FEI Nano-Pico Center; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
- Stony Brook Univ., NY (United States). Dept. of Chemistry
- Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy and Inst. for Advanced Computational Science
- Southeast Univ., Nanjing (China). SEU-FEI Nano-Pico Center
- Stony Brook Univ., NY (United States). Dept. of Chemistry and Dept. of Materials Science and Engineering
- Stony Brook Univ., NY (United States). Dept. of Chemistry and Dept. of Materials Science and Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Multiple lithium-ion transport pathways and local phase changes upon lithiation in silver hollandite are revealed via in situ microscopy including electron diffraction, imaging and spectroscopy, coupled with density functional theory and phase field calculations. Here, we report unexpected inter-nanorod lithium-ion transport, where the reaction fronts and kinetics are maintained within the neighbouring nanorod. Notably, this is the first time-resolved visualization of lithium-ion transport within and between individual nanorods, where the impact of oxygen deficiencies is delineated. Initially, fast lithium-ion transport is observed along the long axis with small net volume change, resulting in two lithiated silver hollandite phases distinguishable by orthorhombic distortion. As a result, a slower reaction front is observed, with formation of polyphase lithiated silver hollandite and face-centred-cubic silver metal with substantial volume expansion. Our results indicate lithium-ion transport is not confined within a single nanorod and may provide a paradigm shift for one-dimensional tunnelled materials, particularly towards achieving high-rate capability.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2M)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC00112704; SC0012673; SC0012704; AC02-05CH11231
- OSTI ID:
- 1372453
- Report Number(s):
- BNL-114057-2017-JA; R&D Project: MA015MACA; KC0201010
- Journal Information:
- Nature Communications, Vol. 8; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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