Low-temperature cobalt oxide as rechargeable cathodic material for lithium batteries

Garcia, B.; Farcy, J.; Pereira-Ramos, J.P.; Périchon, J.; Baffier, N.

doi:10.1016/0378-7753(94)02105-c

Cited by 64 publications

(31 citation statements)

References 14 publications

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“…14 19 20 The resulting products have stoichiometries that differ from LiMnO 2 , contain water or protons, are of poor crystallinity, or do not maintain their structure during cycling. The first successful synthesis of layered LiMnO 2 was reported by Armstrong and Bruce in 1996.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials for Lithium-ion Rechargeable Batteries

Liu¹,

Wang²,

Guo³

et al. 2006

j nanosci nanotechnol

116

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In lithium-ion batteries, nanocrystalline intermetallic alloys, nanosized composite materials, carbon nanotubes, and nanosized transition-metal oxides are all promising new anode materials, while nanosized LiCoO2, LiFePO4, LiMn2O4, and LiMn2O4 show higher capacity and better cycle life as cathode materials than their usual larger-particle equivalents. The addition of nanosized metal-oxide powders to polymer electrolyte improves the performance of the polymer electrolyte for all solid-state lithium rechargeable batteries. To meet the challenge of global warming, a new generation of lithium rechargeable batteries with excellent safety, reliability, and cycling life is needed, i.e., not only for applications in consumer electronics, but especially for clean energy storage and for use in hybrid electric vehicles and aerospace. Nanomaterials and nanotechnologies can lead to a new generation of lithium secondary batteries. The aim of this paper is to review the recent developments on nanomaterials and nanotechniques used for anode, cathode, and electrolyte materials, the impact of nanomaterials on the performance of lithium batteries, and the modes of action of the nanomaterials in lithium rechargeable batteries.

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Section: Introductionmentioning

confidence: 99%

Nanomaterials for Lithium-ion Rechargeable Batteries

Liu¹,

Wang²,

Guo³

et al. 2006

j nanosci nanotechnol

116

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“…Tradionally, compounds are synthesized using solid-state reactions which require prolonged process time of reacting the species at high temperatures. Wet chemistry based sol-gel and colloidal precipitation techniques for synthesizing oxides has been applied recently [9][10][11][12][13]. The low-temperature route of preparation (aqueous solution chemistry) develops materials with submicron sized grains which favor the rate capability on charging/discharging the electrochemical cells [141.…”

Section: Introductionmentioning

confidence: 99%

Structural properties of LiNi1−yCoyO2 (0≤y≤1) synthesized by wet chemistry via malic acid-assisted technique

Mazas-Brandariz

Señarı́s-Rodrı́guez

Castro‐García

et al. 1999

Ionics

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Abstract.We have synthesized LiNil.yCoyO 2 powders by a sol-gel method using malic acid as a chelating agent. The dependence of physico-chemical properties of the powders (crystallinity, lattice constants, grain size) has been investigated by changing the malic acid quantity and the calcination temperature for the different LiNil.yCOyO 2 oxides in the composition range 0 < y < 1. Structural studies show that a layered single phase was obtained for the y values 0.2 < y < 1.0. The local cationic environment has been studied by Raman and FTIR spectroscopy. Using acidassisted LiNil_yCOyO 2 powders (with compositions y = 0.8 and y = 0.6) calcined at 800 ~ Li//LiNivyCOyO 2 cells were assembled and tested by galvanostatic titration. These cells had an initial capacity of 140 mAh/g in the voltage range 2.8-4.2 V and showed attractive chargedischarge profiles upon cycling.

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“…Garcia et al reported that a polymer film can be obtained from the reaction of electrolyte with the strong oxidizing agent Co 4+ , on the surface of the LiCoO 2 electrode, which would include the slow lithium diffusion through this additional solid phase [25]. The oxide film affects the resistance component of the impedance at the electrode/electrolyte interface.…”

Section: Resultsmentioning

confidence: 98%