Fabrication of LiCoO2 thin-film cathodes for rechargeable lithium microbatteries

Julien, C.; Camacho-López, M.A.; Escobar-Alarcón, L.; Haro‐Poniatowski, E.

doi:10.1016/s0254-0584(00)00372-2

Cited by 87 publications

(60 citation statements)

References 29 publications

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“…4 (b). There is one set of well-defined current peaks attributed to the oxidation and reduction reaction [22,26]. In the 2nd cycle, the anodic peak position slightly shifts toward lower potential.…”

Section: Resultsmentioning

confidence: 99%

“…PLD shows its advantages over other methodologies according to the film density, the uniformity, the limited number of the defects, etc. Quite a few groups have applied PLD to deposit LiCoO 2 film on stainless steel (SS) [12][13], Si [13][14][15][16], quartz glass [17], Au [8,18], Pt substrates [8,[17][18][19][20]. However, few reports discussed the influence of film thickness on the film microstructure in detail.…”

Section: Introductionmentioning

confidence: 99%

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LiCoO2 thin film cathode fabricated by pulsed laser deposition

Huo

Chen

et al. 2011

Rare Metals

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LiCoO 2 polycrystalline thin film cathode was prepared by pulsed laser deposition (PLD). The higher power density of the excimer laser beam leads to the film consisting of highly crystallized cylindrical nanoparticles. Furthermore, the film thickness plays an important role on the film orientation as well as the diameter of the oxide cylinders. The film orientation was not fixed with (003) plane parallel to the substrate while the thickness was up to 300 nm. Meanwhile, the diameter of part of the cylindrical particles was increased due to a preferred growth induced by a driving force changing from surface energy to volume strain energy. The electrochemical tests indicate that flat charge/discharge plateaus corresponding to the first-order phase transition appear at around 3.85 V vs. Li/Li + , resulting in high utilization of the active material and good capability retention.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

LiCoO2 thin film cathode fabricated by pulsed laser deposition

Huo

Chen

et al. 2011

Rare Metals

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“…Partially-lithiated cobalt oxide is even better suited for this function, as it has higher lithium-ion diffusivity compared to fully-lithiated cobalt oxide. 44 Also, the partially lithiated structure is expected to facilitate lithium-ion injection and removal at a higher rate than the fully-lithiated cobalt oxide structure.…”

Section: Mixed Conduction Membrane Conceptmentioning

confidence: 99%

Mixed Conduction Membranes Suppress the Polysulfide Shuttle in Lithium-Sulfur Batteries

Moy

Narayanan

2017

J. Electrochem. Soc.

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The shuttling of polysulfide ions between the two electrodes of a lithium-sulfur battery is a major technical issue that limits the electrical performance and cycle life of this battery. This "polysulfide shuttle" causes self-discharge, low charging efficiencies, and irreversible capacity losses. Suppressing the polysulfide shuttle will bring us closer to realizing a rechargeable battery that has two to three times the energy density of today's lithium-ion batteries. We demonstrate a novel approach to the problem of the polysulfide shuttle by using a "mixed conduction membrane" (MCM). The MCM is a thin non-porous lithium-ion conducting barrier that simply restricts the soluble polysulfides to the positive electrode. Lithium-ion conduction occurs through the MCM by electrochemical intercalation or insertion reactions and concomitant solid-state diffusion, exactly as in the cathode of a lithium-ion battery. Because of the rapidity of lithium ion transport in the MCM, the internal resistance of the battery is not higher than that of a conventional lithium-sulfur battery. The MCM is as effective as the lithium nitrate additive in suppressing the polysulfide shuttle reactions. However, unlike lithium nitrate, the MCM is not used up during cycling and thus provides extended durability and cycle life. We establish the criteria for the selection of materials for MCMs and demonstrate the effectiveness of this novel MCM layer by proving the suppression of shuttling of polysulfides, demonstration of improved capacity retention during repeated cycling, and by the preservation of rate capability and impedance of the lithium-sulfur battery. Despite many advances in the area of lithium-ion batteries, the demand for more compact, lightweight, and long-life batteries for portable and automotive applications has continued to steadily increase. Thus, the search for battery solutions with increasingly higher specific energy remains a major quest. The rechargeable lithium-sulfur battery is particularly attractive for high-density electrical energy storage because of its high theoretical specific energy of 2600 Wh/kg and the relatively low cost of sulfur. Thus, lithium-sulfur batteries can provide two to three times the energy density of today's rechargeable lithium-ion batteries.1-3 However, the deployment of lithium-sulfur batteries has been limited by their relatively short cycle life.1-9 Practical cells have a cycle life of just 50-100 cycles. One of the major technical issues limiting the cycle life of the lithium-sulfur cell is the shuttling of soluble polysulfides between the two electrodes. In this article we demonstrate a new approach to suppressing the active shuttling of polysulfides in the lithium-sulfur battery by using a novel type of barrier layer. The novelty of this barrier layer lies in its ability to exclude the polysulfide ions while maintaining selectively the facile transport of lithium ions using a mixed conduction mechanism. We show that this type of barrier layer prevents capacity fade caused by the polysulfi...

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“…Figure 2 shows the Raman spectra of pure and Ti doped LiCoO 2 thin films recorded in the range of 200-1000 cm −1 . Pure and low concentration Ti doped LiCoO 2 films exhibited two well-defined peaks located around 489 and 598 cm −1 correspond to O-Co-O bending mode (E g ) and Co-O stretching mode (A 1g ) [18,25], respectively, for various Ti doping concentrations. These results show that the deposited film possesses rock-salt like structure with R3m symmetry which is in good agreement with the XRD studies.…”

Section: Microstructural Studiesmentioning

confidence: 99%

Microstructural and electrochemical properties of LiTi y Co 1-y O2 film cathodes prepared by RF sputtering

Ganesh

Reddy

Kumar

et al. 2015

J Solid State Electrochem

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LiTi y Co 1-y O 2 (y=0, 0.02, 0.05, 0.1) thin films were deposited on metalized Si substrates using RF magnetron sputtering technique. The films were deposited at a substrate temperature of 250°C with subsequent annealing at 600°C for 3 h in controlled oxygen environment. The films exhibited predominant (003), (101), and (104) orientations representing single-phase hexagonal structure with R3m space group. Two well-defined Raman peaks observed at 489 and 598 cm −1 corresponding to E g and A 1g modes confirm the hexagonal layered structure. The grain size and grain distribution were observed using atomic force microscopy. The cyclic voltammetry studies on Pt//LiTi y Co 1-y O 2 film cathodes in aqueous region exhibited perfect redox peaks at expected potentials. The Pt//LiTi 0.02 Co 0.98 O 2 film cathode exhibited better discharge capacity of about 65 μA h cm −2 μm −1 with good cycling stability compared to pure Pt//LiCoO 2 . The electrochemical impedance analysis revealed a lower charge transfer resistance in Ti doped LiCoO 2 film cathode, resulting better discharge capacity.

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Fabrication of LiCoO2 thin-film cathodes for rechargeable lithium microbatteries

Cited by 87 publications

References 29 publications

LiCoO2 thin film cathode fabricated by pulsed laser deposition

LiCoO2 thin film cathode fabricated by pulsed laser deposition

Mixed Conduction Membranes Suppress the Polysulfide Shuttle in Lithium-Sulfur Batteries

Microstructural and electrochemical properties of LiTi y Co 1-y O2 film cathodes prepared by RF sputtering

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