Gel-combustion synthesis of Li_1.2Mn_0.4Co_0.4O₂composites with a high capacity and superior rate capability for lithium-ion batteries

Large-Scale Production of MoO 3 -Reduced Graphene Oxide Powders with Superior Lithium Storage Properties by Spray-Drying Process

“…The impedance spectra comprise a semicircle and an inclined line. The medium-frequency semicircle was assigned to the charge-transfer resistance (R ct ) and the line inclined at $45 to the real axis corresponded to the lithium diffusion process within the electrodes [65][66][67]. The MoO 3 -rGO powder with a high surface area had a slightly higher charge transfer resistance than the MoO 3 and MoO 3 -C1 powders before cycling, as shown in Fig.…”

Template-engaged synthesis of spinel-layered Li1.5MnTiO4+ nanorods as a cathode material for Li-ion batteries

“…4a,c). The peak above 4.4 V predominantly corresponds to the highly irreversible activation process of stripping Li 2 O off the Li 2 Mn y Ti 1ey O 3 component, and the formation of an active [Mn, Ti]O 2 -like component [25]. Note that because of the high bonding energy of Ti e O (662 kJ mol À1 ), the plateau was small.…”

Superior electrochemical properties of spherical-like Co2(OH)3Cl-reduced graphene oxide composite powders with ultrafine nanocrystals

“…6d shows the relationship between the real part of the impedance spectra (Z re ) and x À1/2 , where x is the angular frequency, in the lowfrequency region after 100 cycles. The low slope r, the Warburg impedance coefficient, of the real part of the impedance spectra (Z re ) versus x À1/2 revealed a fast lithium-ion diffusion rate in the Co 2 (OH) 3 Cl/RGO composite powders [55,56]. Fig.…”