Electrochemical effect of lithium tungsten oxide modification on LiCoO2 thin film electrode

Pulsed Laser Deposited Films for Microbatteries

“…LCO films modified by amorphous tungsten oxide (LWO) fabricated by PLD show a high capacity retention of Q r = 80% at a high rate of 20C, against Q r = 0% for bare LCO films cycled at the same C-rate. A slight increase of the superficial diffusion coefficient of Li + ions from 2.2 × 10 −13 and 3.0 × 10 −13 cm 2 ·s −1 was also observed, owing to the surface modification [83][84][85][86]. Note that LWO as well as LNBO are lithium ion conductors, which act as an efficient buffer between the electrolyte and LCO cathode.…”

Tracer diffusion coefficients of Li+ ions in c-axis oriented LixCoO2 thin films measured by secondary ion mass spectrometry

“…The large discrepancies are attributed to the intrinsic uncertainty involved in the experiments. 22 The electrochemical system involves multiple bulk and interfacial processes (e.g., ohmic resistances in the electrolyte, interfacial charge transfer resistance and side reactions [23][24][25][26] ), which often make the analysis difficult. In addition, self-diffusion coefficients were measured by NMR and muon-spin relaxation techniques.…”

Self-template processed hierarchical V2O5 nanobelts as cathode for high performance lithium ion battery

“…However, cathode materials with inferior electrochemical performances restrict the development of LIBs as a bottleneck. The widely used cathode materials, such as LiCoO 2 [7][8], LiFePO 4 [9][10][11], LiNi 1/3 Mn 1/3 Co 1/3 O 2 and LiMn 2 O 4 [12][13], with low discharge capacities (lower than 200 mAh g −1 )…”