Structural changes and thermal stability of charged LiNixMnyCozO₂ cathode materials studied by combined in situ time-resolved XRD and mass spectroscopy

• Published in: ACS applied materials & interfaces Vol. 6; no. 24; pp. 22594 - 22601
• Main Authors: Bak, Seong-Min, Hu, Enyuan, Zhou, Yongning, Yu, Xiqian, Senanayake, Sanjaya D, Cho, Sung-Jin, Kim, Kwang-Bum, Chung, Kyung Yoon, Yang, Xiao-Qing, Nam, Kyung-Wan
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 24.12.2014
• Subjects: cathode materials; cathodes; cations; cobalt; electrode material; energy density; ENERGY STORAGE; manganese; mass spectrometry; nickel; NSLS; oxygen; phase transition; reaction mechanism; sodium-ion battery; temperature; thermal degradation; thermal stability; transmission electron microscopy; X-ray absorption spectroscopy; X-ray diffraction; synchrotron X-ray diffraction; energy storage; Li-ion battery; safety; layered structure

Thermal stability of charged LiNixMnyCozO2 (NMC, with x + y + z = 1, x:y:z = 4:3:3 (NMC433), 5:3:2 (NMC532), 6:2:2 (NMC622), and 8:1:1 (NMC811)) cathode materials is systematically studied using combined in situ time-resolved X-ray diffraction and mass spectroscopy (TR-XRD/MS) techniques upon heatin...