Phase evolution of conversion-type electrode for lithium ion batteries
Journal Article
·
· Nature Communications
- Brookhaven National Lab. (BNL), Upton, NY (United States). Centre for Functional Nanomaterials
- Argonne National Lab. (ANL), Argonne, IL (United States). X-Ray Science Division. Advanced Photon Source; China Univ. of Petroleum, Beijing (China). Dept. of Materials Science and Engineering
- Brookhaven National Lab. (BNL), Upton, NY (United States). Centre for Functional Nanomaterials; Univ. of Waterloo, ON (Canada). Dept. of Chemical Engineering. Waterloo Inst. for Nanotechnology. Waterloo Inst. for Sustainable Energy
- Univ. of Waterloo, ON (Canada). Dept. of Chemical Engineering. Waterloo Inst. for Nanotechnology. Waterloo Inst. for Sustainable Energy
- Argonne National Lab. (ANL), Argonne, IL (United States). X-Ray Science Division. Advanced Photon Source
- Brookhaven National Lab. (BNL), Upton, NY (United States). Sustainable Energy Technologies Dept.
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering
Batteries with conversion-type electrodes exhibit higher energy storage density but suffer much severer capacity fading than those with the intercalation-type electrodes. The capacity fading has been considered as the result of contact failure between the active material and the current collector, or the breakdown of solid electrolyte interphase layer. Here, using a combination of synchrotron X-ray absorption spectroscopy and in situ transmission electron microscopy, we investigate the capacity fading issue of conversion-type materials by studying phase evolution of iron oxide composited structure during later-stage cycles, which is found completely different from its initial lithiation. The accumulative internal passivation phase and the surface layer over cycling enforce a rate-limiting diffusion barrier for the electron transport, which is responsible for the capacity degradation and poor rate capability. This work directly links the performance with the microscopic phase evolution in cycled electrode materials and provides insights into designing conversion-type electrode materials for applications.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357; SC0012704
- OSTI ID:
- 1515155
- Alternate ID(s):
- OSTI ID: 1542127
- Report Number(s):
- BNL--211691-2019-JAAM
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Vol. 10; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
SnO 2 as Advanced Anode of Alkali‐Ion Batteries: Inhibiting Sn Coarsening by Crafting Robust Physical Barriers, Void Boundaries, and Heterophase Interfaces for Superior Electrochemical Reaction Reversibility
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journal | December 2019 |
Ti‐Based Oxide Anode Materials for Advanced Electrochemical Energy Storage: Lithium/Sodium Ion Batteries and Hybrid Pseudocapacitors
|
journal | December 2019 |
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