Effects of lithium tungsten oxide coating on LiNi0.90Co0.05Mn0.05O2 cathode material for lithium-ion batteries

Dual function Li-reactive coating from residual lithium on Ni-rich NCM cathode material for Lithium-ion batteries

“…The peaks of Co 2p of Co 3+ are observed at 779.5 eV and 794.7 eV which belongs to the Co 2p 3/2 and Co 2p 1/2 , respectively 8 . The Mn 2p 3/2 peak is observed at 642.1 eV corresponding to the Mn 4+ 27 . The C 1 s spectrum shows suppression in the peak at 289.4 eV which is due to the lower concentration of Li 2 CO 3 on the surface of LiP-0.1 sample as compared to pristine.…”

“…The coating has alleviated the structural degradation that suppressed the increase in charge transfer resistance. Sim et al 27 has transformed the residual lithium compounds into lithium tungsten oxide (LWO) coating on LiNi 0.9 Co 0.05 Mn 0.05 O 2 . The 0.5 wt.% LWO-NCM delivers the superior electrochemical cyclability with the capacity retention of 84.6% after 80 cycles.…”

Identifying surface degradation, mechanical failure, and thermal instability phenomena of high energy density Ni-rich NCM cathode materials for lithium-ion batteries: a review

“…All the above phenomena suffer a decrease in electrochemical performance and hinder the widely commercialization of Ni-rich materials. 99 Thus, currently the cracking issue has been identified as a major degradation mechanism.…”

Enhancing cycle life of nickel-rich LiNi0.9Co0.05Mn0.05O2 via a highly fluorinated electrolyte additive - pentafluoropyridine

“…[11][12][13][14] Sim et al coated the surface of LiNi0.9Co0.05Mn0.05O2 (NCM90) particles with 0.5 wt% tungsten oxide, realizing a capacity retention of 84.6% at 1C after 80 cycles, which surpassed the 76.6% for pristine NCM90. [15] Park et al's result showed that the 1 wt% boron doped NCM90 could deliver a discharge capacity of 237 mAh g -1 at 4.3 V, with outstanding capacity retention of 91% after 100 cycles at 55 o C, which is 15% higher than the undoped counterpart. [16] Besides, manipulation of the material particle morphology and orientation, as well as the elemental distribution is also an alternative approach to overcome the degradation.…”