Direct atomic-resolution observation of two phases in the Li(1.2)Mn(0.567)Ni(0.166)Co(0.067)O2 cathode material for lithium-ion batteries

Haijun Yu; Ryo Ishikawa; Yeong-Gi So; Naoya Shibata; Tetsuichi Kudo; Haoshen Zhou; Yuichi Ikuhara

doi:10.1002/anie.201301236

Direct atomic-resolution observation of two phases in the Li(1.2)Mn(0.567)Ni(0.166)Co(0.067)O2 cathode material for lithium-ion batteries

Angew Chem Int Ed Engl. 2013 Jun 3;52(23):5969-73. doi: 10.1002/anie.201301236. Epub 2013 Apr 24.

Authors

Haijun Yu¹, Ryo Ishikawa, Yeong-Gi So, Naoya Shibata, Tetsuichi Kudo, Haoshen Zhou, Yuichi Ikuhara

Affiliation

¹ Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568, Japan.

PMID: 23616487
DOI: 10.1002/anie.201301236

Abstract

About phase: The coexistence of rhombohedral LiTMO2 (TM=Ni, Co, or Mn) and monoclinic Li2MnO3-like structures inside Li1.2Mn0.567Ni0.166Co0.067O2 is revealed directly at atomic resolution. The hetero-interface along the [001]rh/[103]mon zone axis direction is demonstrated, indicating the two-phase nature of these lithium-rich cathode materials (green Li, blue Mn, red O, cyan TM).