Cu[sub 2]Sb Thin-Film Electrodes Prepared by Pulsed Laser Deposition for Lithium Batteries

Control of Surface Chemistry and Electrochemical Performance of Carbon-coated Silicon Anode Using Silane-based Self-Assembly for Rechargeable Lithium Batteries

“…5a-a', the C-Si surface shows strong IR features below 900 cm , related to the reduction of organic carbonate solvents. 16,17,[22][23][24]31,32,[40][41][42] With 1-(trimethylsilyloxy)-1,3-butadiene, Fig. 5b-b', the CSi surface also shows strong IR features below 900 cm .…”

“…5b-b', the CSi surface also shows strong IR features below 900 cm . 16,17,[22][23][24]31,32 Newly appeared tiny peaks at 1307, 1153, 1016, 833 cm -1 are ascribed to stretching modes of P=O, P-O-C and P-F group from -O=PF-OR organic phosphorus-fluorine compounds. 31,32,43 They are partly overlapped with the peaks at 1108 and ~1045 cm -1 characteristic of siloxane chain, 16,31,32 in Fig.…”

“…16,[21][22][23][24] Polymeric binder often gives interfering signals in IR spectroscopic data, which obstructs distinguishing newly formed surface species from the binder. Thin-films prepared with pulsed laser deposition (PLD), which generally possess a strong physical interfacial adherence to electronically conductive substrate, allow the observation of material's intrinsic surface structure and reaction, and inhibit a peel-off event of the film during extended cycling in lithium cells.…”

“…For the surface characterization, we focus on ex-situ IR measurement with attenuated total reflection (ATR) geometry that is very sensitive to surface species and provides direct information on the functional groups of surface molecules. [22][23][24][25][26] Here we report a surface modification approach to stabilize surface structure and cycling performance of carbon-coated Si thin-film electrode. Surface modification by self-assembly of organoalkoxysilanes with different number of organoalkoxy group and SEI layer formation resulting from electrode/electrolyte interfacial reactions were determined using ex-situ IR spectroscopy with attenuated total reflection (ATR) geometry.…”

A Multi-Functional Electrolyte for Lithium-Ion Batteries

“…Similarly, the lower and upper voltage limits for LTO half cells were 1 and 2 V, respectively, which is 0.5 V above and below the constant potential it delivers useful capacity at low rates. The potential limits used for Cu2Sb were selected to best utilize the most reversible two-phase reaction of the active material, which occurs between 0.5 and 0.95 V vs. Li/Li + [128]. The selection of voltage limits directly affects the capacity of the cell, especially for Cu2Sb.…”