High-Rate Capability of LiCoO2 Cathodes

High-quality (104)-oriented LiCoO2 epitaxial thin film cathodes exhibit an extremely large high-rate discharge exceeding 100,000 C and 100 mA cm–2 without any capacity loss. Comparison with c-axis oriented epitaxial cathodes indicates a definite anisotropic rate capability in layered rock-salt-type LiCoO2.