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A review of blended cathode materials for use in Li-ion batteries
- Source :
- Journal of Power Sources. 248:91-100
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- Several commercial automotive battery suppliers have developed lithium ion cells which use cathodes that consist of a mixture of two different active materials. This approach is intended to take advantage of the unique properties of each material and optimize the performance of the battery with respect to the automotive operating requirements. Certain cathode materials have high coulombic capacity and good cycling characteristics, but are costly and exhibit poor thermal stability (e.g., LiNixCo1−x−yAlyO2). Alternately, other cathode materials exhibit good thermal stability, high voltage and high rate capability, but have low capacity (e.g., LiMn2O4). By blending two cathode materials the shortcomings of the parent materials could be minimized and the resultant blend can be tailored to have a higher energy or power density coupled with enhanced stability and lower cost. In this review, we survey the developing field of blended cathode materials from a new perspective. Targeting a range of cathode materials, we survey the advances in the field in the current review. Limitations, such as capacity decay due to metal dissolution are also discussed, as well as how the appropriate balance of characteristics of the blended materials can be optimized for hybrid- and electric-vehicle applications.
- Subjects :
- Battery (electricity)
Materials science
Renewable Energy, Sustainability and the Environment
business.industry
Electrical engineering
Energy Engineering and Power Technology
chemistry.chemical_element
High voltage
Engineering physics
Cathode
Lithium-ion battery
law.invention
chemistry
law
Lithium
Thermal stability
Automotive battery
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
business
Power density
Subjects
Details
- ISSN :
- 03787753
- Volume :
- 248
- Database :
- OpenAIRE
- Journal :
- Journal of Power Sources
- Accession number :
- edsair.doi...........4b905b3c320813011b029c149ddfa8ce