Solid-State Chemistry and Electrochemistry of LiCo1 ∕ 3Ni1 ∕ 3Mn1 ∕ 3O2 for Advanced Lithium-Ion Batteries III. Rechargeable Capacity and Cycleability

摘要: Reaction mechanism of LiCo 1/3 Ni Mn O 2 was examined by ex situ X-ray diffraction (XRD) and electrochemical methods. According to XRD results, the change in hexagonal lattice parameters quite similar that Li 1-x Co 1/2 , i.e., unit cell volume almost constant at 0 ≤ x < 2/3 indicating homogeneous phase reaction over an entire range. Reversible-potential measurements on (0 1) against a lithium electrode were also carried out solid-state redox reactions described applying concept density states (EDS). Gibbs free-energy for + □CO N → obtained be AG = -398 kJ mol -1 which slightly higher than (-393 ). Rechargeable capacity (Q) as function charge-end voltage (E ce ) Li/LiCo cells relation between Q mAh g E V given 151 121 - 4.2). From these rechargeable cycleability are discussed .