Positron unveiling high mobility graphene stack interfaces in Li-ion cathodes
Meiying Zheng,
Jan Kuriplach,
Ilja Makkonen
et al.
Abstract:Carbon-based coatings in Li-ion battery cathodes improve electron conductivity and enable rapid charging. However, the mechanism is not well understood. Here, we address this question by using positrons as non-destructive probes to investigate nano-interfaces within cathodes. We calculate the positron annihilation lifetime in a graphene stack LiCoO2 heterojunction using an ab initio method with a non-local density approximation to accurately describe the electron-positron correlation. This ideal heterostructur… Show more
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