February 16, 2006Science
Electrodes with High Power and High Capacity for Rechargeable Lithium Batteries
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Discussion
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Implication
Computational and experimental study reveals enhanced rate capability in modified lithium nickel manganese oxide electrodes, suggesting viable alternatives to lithium cobalt oxide.
Key Points
- To identify and test material design strategies for developing battery electrode materials with high energy density and high charge-discharge rate capabilities.
- Utilized ab initio computational modeling to formulate strategies for enhancing electrode rate performance.
- Synthesized and structurally modified lithium nickel manganese oxide [Li(Ni0.5Mn0.5)O2] to evaluate charge and discharge kinetics compared to lithium cobalt oxide (LiCoO2).
- Crystal structure modification of Li(Ni0.5Mn0.5)O2 yielded unexpectedly high rate capability, substantially outperforming standard LiCoO2 electrode materials.
- Demonstrated that inexpensive and safe electrode compounds previously constrained by low intrinsic rate kinetics can achieve high power and capacity.
Cite This Study
Kang et al. (2006) studied this question.