Abstract
Li- and Mn-rich composite cathodes, such as Li1.2Ni0.2Mn0.6O2 are attractive for electrified transportations. However, this type of materials suffers from a voltage decay during cycling, which makes it unpractical in real applications. For a better characterization and understanding of the voltage fade phenomenon, the average voltage and average quasi-OCP were measured to estimate the voltage decay rate. As a possible solution, atomic-layer-deposition (ALD) Al2O3 coatings were applied to the powder to stabilize the material's surface. The voltage fade of the ALD-coated sample was also evaluated.
| Original language | English |
|---|---|
| Pages (from-to) | 231-235 |
| Number of pages | 5 |
| Journal | Solid State Ionics |
| Volume | 268 |
| Issue number | PB |
| DOIs | |
| State | Published - Dec 15 2014 |
| Externally published | Yes |
Funding
The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. Support from the U.S. Department of Energy's Vehicle Technologies Program , specifically from Peter Faguy and Dave Howell, is gratefully acknowledged. Drs. Jeff W. Elam and Xiangbo Meng from Energy System Division (ANL) are supported as part of the Center for Electrical Energy Storage: Tailored Interfaces, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences .
| Funders | Funder number |
|---|---|
| Office of Basic Energy Sciences | |
| U.S. Department of Energy | |
| Office of Science |
Keywords
- Atomic layer deposition (ALD)
- Layered-layered composite
- Li-ion battery
- Voltage fade
