Nanocrystalline LiMn2O4 thin film cathode material prepared by polymer spray pyrolysis method for Li-ion battery

Comparative studies of laser annealing technique and furnace annealing by X-ray diffraction and Raman analysis of lithium manganese oxide thin films for lithium-ion batteries

“…Differences can be found in the type of lithium diffusion while the olivine-type provides 1-dimensional [2], the layered compounds 2-dimensional [3] and the spinel-type 3-dimensional diffusion paths [3]. The practical capacities also differ within those materials, counting 140 mAh/g for LiCoO 2 , 170 mAh/g for LiFePO 4 and 110 mAh/g for LiMn 2 O 4 [1,3]. Typically, spinel LiMn 2 O 4 is one promising candidate because of its non-toxicity [4], its high operating voltage in the 4 V region [5] and low material costs [6,7].…”

Electrochemical performance of LiVPO4F/C composite cathode prepared through amorphous vanadium phosphorus oxide intermediate

“…Recently, LiVPO 4 F [1-10], a polyanion cathode material for lithium-ion batteries first reported by Barker et al in 2003 [1], has received extensive attention and been considered as an alternative to the presently used LiCoO 2 [11,12] and LiMn 2 O 4 [13][14][15]. LiVPO 4 F has a triclinic structure, isostructural with the mineral tavorite LiFePO 4 (OH) [16] and exhibits a theoretical capacity of about 156 mAh g −1 , close to that of the intensively studied LiFePO 4 (170 mAh g −1 ), and a sole discharge voltage plateau of about 4.2 V vs. Li + /Li, which is higher than that of LiFePO 4 (3.5 V) and LiCoO 2 (3.9 V).…”

Synthesis of novel high-voltage cathode material LiCoPO4 via rheological phase method

“…Research of cathode materials, such as LiCoO 2 , LiMn 2 O 4 , Li 3 V 2 (PO 4 ) 3 , LiFePO 4 , LiCoPO 4 and others lithium metal (metal = Ni, Co, Mn etc.) mixed oxide compounds, has been the hot spot, recently [1][2][3][4][5][6][7][8][9]. Among these materials, the LiCoPO 4 with an ordered olivine structure has the highest work voltage of 4.8 V [7], far above that of the other materials (3.4-4.1 V), which can increase the energy and power density of LIBs.…”