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Title: Lithium titanate hydrates with superfast and stable cycling in lithium ion batteries

Journal Article · · Nature Communications
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  1. Tsinghua Univ., Beijing (China); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Tsinghua Univ., Beijing (China)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)

Lithium titanate and titanium dioxide are two best-known high-performance electrodes that can cycle around 10,000 times in aprotic lithium ion electrolytes. Here we show there exists more lithium titanate hydrates with superfast and stable cycling. That is, water promotes structural diversity and nanostructuring of compounds, but does not necessarily degrade electrochemical cycling stability or performance in aprotic electrolytes. As a lithium ion battery anode, our multi-phase lithium titanate hydrates show a specific capacity of about 130 mA h g–1 at ~35 C (fully charged within ~100 s) and sustain more than 10,000 cycles with capacity fade of only 0.001% per cycle. In situ synchrotron diffraction reveals no 2-phase transformations, but a single solid-solution behavior during battery cycling. Here, so instead of just a nanostructured intermediate to be calcined, lithium titanate hydrates can be the desirable final destination.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); Ministry of Education of the People's Republic of China; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1462488
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 83 works
Citation information provided by
Web of Science

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Interfacial Lattice‐Strain‐Driven Generation of Oxygen Vacancies in an Aerobic‐Annealed TiO 2 (B) Electrode journal November 2019
Plasma Enabled Synthesis and Processing of Materials for Lithium-Ion Batteries journal July 2018
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A Calcium‐Ion Hybrid Energy Storage Device with High Capacity and Long Cycling Life under Room Temperature journal February 2019
Glass‐Ceramic‐Like Vanadate Cathodes for High‐Rate Lithium‐Ion Batteries journal December 2019
Preparation of Li4Ti5O12/C–C with super long high-rate cycle properties using glucose and polyurethane as double carbon sources for lithium ion batteries journal February 2019
Recent progress in Ti-based nanocomposite anodes for lithium ion batteries journal March 2019
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