Influence of annealing temperature on microstructural and electrochemical properties of rf-sputtered LiMn2O4 film cathodes

Controlling Interfacial Properties of Lithium‐Ion Battery Cathodes with Alkylphosphonate Self‐Assembled Monolayers

“…Figure a shows a plot of the peak splitting measured for the first lithium intercalation redox pair for both the bare and modified LMO surfaces (i.e., region 2 in Figure ). The peak splitting value obtained for the bare LMO surface is similar to that previously reported for thin films deposited via RF magnetron sputtering . As with the Fc/Fc + case, an increase in alkylphosphonate chain length results in an increase in peak splitting up until n = 10.…”

“…Decoration of LiMn 2 O 4 Films and Particles with Alkylphosphonate SAMs : Thin film LMO cathodes were prepared via RF magnetron sputtering using a modification of a previously reported methods . A stoichiometric lithium manganese oxide plate (LTS Research Laboratories, Inc.) was used as the target.…”

Three‐Dimensional Self‐Supported Metal Oxides for Advanced Energy Storage

“…In early studies, metallic Li was frequently used as the negative electrode, although this leads to the obvious challenge of protection of the lithium metal and lithium compounds from reactions with air. As research on positive and negative electrode materials progressed for large batteries, many new materials were used in thin film batteries, including positive electrode materials such as V 2 O 5 , layered oxides such as LiCoO 2 , spinel oxides based on LiMn 2 O 4 , and olivine phosphates such as LiFePO 4 plus negative electrode materials such as carbons, Si, and intercalation oxides such as TiO 2 and Li 4 Ti 5 O 12 . Solid electrolyte research has also produced new materials which exhibit good Li‐ion conductivity at room temperature and electrochemical stability at high potential such as polymers, ion‐conductive glasses of the Li 2 O‐B 2 O 5 ‐P 2 O 5 and Li 2 S‐P 2 S 5 systems, plus nitrogen‐doped lithium phosphosphate (LiPON), lithium phosphosilicate (LiSiPON) and lithium borophosphate (LiPONB) .…”

Growth, Microstructure and Electrochemical Properties of RF Sputtered LiMn<sub>2</sub>O<sub>4</sub> Thin Films on Au/Polyimide Flexible Substrates

“…LiMn 2 O 4 thin films are deposited from a three inch diameter cold pressed and sintered lithium rich (10%) LiMn 2 O 4 target using RF magnetron sputtering technique on gold coated polyimide (Kapton) substrates (obtained from M/s Aarthai engineers). During the depositions, the substrate temperature was kept at 300˚C and the sputtered gas (O 2 /Ar) composition of 1:6 was maintained to minimize the loss of lithium [26]. The RF power applied to the LiMn 2 O 4 target during sputtering was 140 W. The sputtering pressure maintained during the deposition was 0.9 pascals.…”