Resolving atomic-scale phase transformation and oxygen loss mechanism in ultrahigh-nickel layered cathodes for cobalt-free lithium-ion batteries

• Published in: Matter Vol. 4; no. 6; pp. 2013 - 2026
• Main Authors: Wang, Chunyang, Han, Lili, Zhang, Rui, Cheng, Hao, Mu, Linqin, Kisslinger, Kim, Zou, Peichao, Ren, Yang, Cao, Penghui, Lin, Feng, Xin, Huolin L.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 02.06.2021; Elsevier
• Subjects: cracks; electron tomography; electron tomography transmission electron microscopy; in situ; layered cathode; lithium-ion batteries; NANOSCIENCE AND NANOTECHNOLOGY; oxygen loss; phase transformation; structural degradation; transmission electron microscopy; lithium-ion batteries; structural degradation; phase transformation; cracks; oxygen loss; transmission electron microscopy; MAP3: Understanding; layered cathode; electron tomography; in situ

Doped LiNiO2 has recently become one of the most promising cathode materials for its high specific energy, long cycle life, and reduced cobalt content. Despite this, the degradation mechanism of LiNiO2 and its derivatives still remains elusive. Here, by combining in situ electron microscopy and firs...