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Pillar Effect in Ni‐rich Cathode of Li‐Ion Battery by NH 3 Thermal Treatment
Author(s) -
Lee Geun Jun,
Abbas Muhammad Awais,
Bang Jin Ho
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12282
Subject(s) - cathode , nickel , thermal stability , materials science , degradation (telecommunications) , battery (electricity) , ion , lithium (medication) , chemical engineering , pillar , chemistry , metallurgy , computer science , telecommunications , thermodynamics , organic chemistry , physics , medicine , power (physics) , structural engineering , engineering , endocrinology
Ni‐rich LiNi x Mn y Co z O 2 (NCM) cathode in lithium‐ion batteries is attractive due to high specific capacity but it suffers from stability issue during delithiation. Cation disorder is typically detrimental to capacity, but a controlled amount of cation disorder can serve as pillar and hence increase stability. In this work, we use hot NH 3 treatment to induce pillar effect by moving a controlled amount of Ni 2+ into Li‐layers to alleviate the structural collapse.