Abstract
Monodispersed Li4Ti5O12 (LTO) nanoparticles with controlled microstructure were successfully synthesized by a combination of hydrolysis and hydrothermal method followed by a post-annealing process. The scanning electron microscopy images showed that particles with a size of 30–50 nm were precisely controlled throughout the synthesis process. The electrochemical tests of the as-prepared LTO electrodes in a half-cell proved its high rate performance and outstanding cyclability which benefits from the preserved well-controlled nanoparticle size and morphology. LTO electrodes were also tested in a full cell configuration in pairing with LiFePO4 cathodes, which demonstrated a capacity of 147.3 mA h g−1. In addition, we have also demonstrated that LTO materials prepared using lithium salts separated from geothermal brine solutions had good cyclability. These demonstrations provide a promising way for making low-cost, large-scale LTO electrode materials for energy storage applications.
| Original language | English |
|---|---|
| Pages (from-to) | 642-646 |
| Number of pages | 5 |
| Journal | ChemNanoMat |
| Volume | 2 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2016 |
Funding
Research was sponsored by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy. Battery evaluation using geothermal derived lithium salts was supported in part by the Critical Material Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. Notice: This Communication has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this Communication, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
| Funders | Funder number |
|---|---|
| Critical Material Institute | |
| Office of Basic Energy Sciences | |
| U.S. Department of Energy | |
| Advanced Manufacturing Office | |
| Office of Science | |
| Office of Energy Efficiency and Renewable Energy | |
| Division of Materials Sciences and Engineering |
Keywords
- high-rate anode
- lithium-ion batteries (LIBs)
- safe batteries
- solid electrolyte interface (SEI)
- spinel LiTiO (LTO)
