The effects of FEC (fluoroethylene carbonate) electrolyte additive on the lithium storage properties of NiO (nickel oxide) nanocuboids

Abstract

Guo, Z. (2013). The effects of FEC (fluoroethylene carbonate) electrolyte additive on the lithium storage properties of NiO (nickel oxide) nanocuboids. Energy, 58 (September), 707-713.The effects of FEC (fluoroethylene carbonate) electrolyte additive on the lithium storage properties of NiO (nickel oxide) nanocuboids AbstractNanocuboid shaped NiO (nickel oxide) has been synthesized using an optical floating zone furnace. It was found that the nanocuboids exhibit single crystalline nature, and have clean and sharp edges. Furthermore, the NiO nanocuboids were tested for their electrochemical performances as anode material for LIBs (lithium-ion batteries) in a coin-type half cell. The effects of FEC (fluoroethylene carbonate) additive on the lithium storage performance were also investigated, which is the first of such studies for transition metal oxides. It was found that FEC has a positive effect on the cycling stability and also improves the rate performances of the nanocuboids. The capacity recorded at 0.1C (100mAg-1) after 50 charge/dischargecycles is 1400mAhg-1. Lastly, the NiO nanocuboids can achieve very high rate capability of 12C (12Ag-1) AbstractNanocuboid shaped nickel oxide has been synthesized using an optical floating zone furnace.It was found that the nanocuboids exhibit single crystalline nature, and have clean and sharp edges. Furthermore, the nickel oxide nanocuboids were tested for their electrochemical performances as anode material for lithium-ion batteries in a coin type half-cell. The effects of fluoroethylene carbonate additive on the lithium storage performance were also investigated, which is the first of such studies for transition metal oxides. It was found that fluoroethylene carbonate has a positive effect on the cycling stability and also improves the rate performances of the nanocuboids. The capacity recorded at 0.1 C (100 mA g -1 ) after 50 charge/discharge cycles is 1400 mAh g -1 . Lastly, the nickel oxide nanocuboids can achieve very high rate capability of 12 C (12 A g -1 ) with capacity of 312 mAh g -1 .3

Electrochemical Mechanism Investigation of Cu2MoS4 Hollow Nanospheres for Fast and Stable Sodium Ion Storage

“…As shown in Figure S2 (Supporting Information), glucose incorporation is effective in improving the electrochemical performance of CMS, although the rate performance is still quite limited with capacity of <20 mAh g −1 at 5000 mA g −1 . In addition, the initial coulombic efficiency of CMS1 is very limited (<40%), which is possibly related with electrolyte decomposition at low voltage with the formation of solid electrolyte interphase . In this case, in order to boost the electrochemical performance of the samples and to improve the initial CE, ether‐based electrolyte (1 m NaCF 3 SO 3 in diethylene glycol dimethyl ether (DEGDME)) is employed instead, with a narrowed voltage window of 0.5–3.0 V. The cycling stability of metal sulfide‐based materials in ether‐based electrolyte can be enhanced, which is ascribed to the smaller apparent activation energy, reduced voltage polarization, and suppressed polysulfides dissolution in ether‐based electrolyte .…”

Review of ZnO Binary and Ternary Composite Anodes for Lithium-Ion Batteries

“…The synergistic effects between the components of the composites as well as the correlation between the composite structure and the electrical performance should be investigated in more detail. In general, the initial CEs of ZnO-based composites were low and should be increased, for which electrolyte optimization, surface modification, and coating of ZnO are possible solutions [ 9 , 48 , 49 ]. In the case of ZnO–MO binary composites, the choice of MO partner to prepare ZnO–MOs may increase the initial CE.…”

“…The electrolyte decomposition, SEI formation, occurrence of unclear irreversible reactions, and Li + confinement in the electrode explain the low CE. The authors suggested that electrolyte optimization can enhance the initial CE of the MOs [ 48 , 49 ]. After 200 cycles, the specific capacity of the microspheres remained approximately 1008.6 mAh g −1 .…”

Formation of an Electroactive Polymer Gel Film upon Lithiation and Delithiation of PbSe

“…20 Seng et al showed that the capacity of NiO can increase by as much as 680 mAh g −1 with a PGF. 21 Here we show that an electroactive PGF also forms on our PbSe electrode, adding as much as 300 mAh g −1 to its nominal capacity.…”