Hydrothermal synthesis and characterization of Co2.85Si0.15O4 solid solutions and its carbon composite as negative electrodes for Li-ion batteries

Sivalingam, Yuvaraj; Karthikeyan, K.; Vasylechko, L.; Selvan, R. Kalai

doi:10.1016/j.electacta.2015.01.065

Cited by 23 publications

(9 citation statements)

References 65 publications

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“…In the CV curves of pure carbon electrode (Fig. 5d), two cathodic peaks at 0.01 and 1.21 V are observed corresponding to the Li + ions insertion into carbon [43]. The cathodic peak ascribed to the reduction of Cr 3+ to Cr 0 also appears at 0.01 V (Fig.…”

Section: Resultsmentioning

confidence: 94%

Chromium(III) oxide carbon nanocomposites lithium-ion battery anodes with enhanced energy conversion performance

Yan

et al. 2015

Chemical Engineering Journal

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The chromium (III) oxide (Cr 2 O 3 ) nanoparticles embedded in the carbon sheets are fabricated by combining a sol-gel approach with an efficient carbonization process using glycine as carbon precursor. These Cr 2 O 3 /carbon nanocomposites serving as anode materials for lithium-ion batteries (LIBs) have been tested, exhibiting higher cycling (reversible capacity of 465.5 mAh g -1 after 150 cycles at a current density of 100 mA g -1 ) and rate performances (the discharge capacities of 448.7, 287.2, and 144.8 mAh g -1 at a current density of 200, 400, and 800 mA g -1 , respectively) than pure Cr 2 O 3 (reversible capacity of 71.2 mAh g -1 after 150 cycles at a current density of 100 mA g -1 and the discharge capacities of 174.4, 60.5, 29.5, and 13.6 mAh g -1 at a current density of 100, 200, 400, and 800 mA g -1 , respectively) due to the presence of carbon sheets, which efficiently buffer the volume change during the lithiation/delithiation and improve the electrical conductivity between Cr 2 O 3 nanoparticles.

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Section: Resultsmentioning

confidence: 94%

Chromium(III) oxide carbon nanocomposites lithium-ion battery anodes with enhanced energy conversion performance

Yan

et al. 2015

Chemical Engineering Journal

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“…X-ray diffraction (Supporting Information Figure S4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 7 the cathodic scan and 1.3 V in anodic scan which decay during cycling are likely electrochemical reactions between lithium and amorphous carbon. 29,30 The alloying and dealloying peaks overlap well starting with the second cycle, indicating stable and reversible lithiation-delithation. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 (Figure 3b,c) which increases to greater than 90% in the second cycle and to around 98% after ~15 c...…”

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confidence: 91%

High Volumetric Capacity Three-Dimensionally Sphere-Caged Secondary Battery Anodes

et al. 2016

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High volumetric energy density secondary batteries are important for many applications, which has led to considerable efforts to replace the low volumetric capacity graphite-based anode common to most Li-ion batteries with a higher energy density anode. Because most high capacity anode materials expand significantly during charging, such anodes must contain sufficient porosity in the discharged state to enable the expansion, yet not excess porosity, which lowers the overall energy density. Here, we present a high volumetric capacity anode consisting of a three-dimensional (3D) nanocomposite formed in only a few steps which includes both a 3D structured Sn scaffold and a hollow Sn sphere within each cavity where all the free Sn surfaces are coated with carbon. The anode exhibits a high volumetric capacity of ∼1700 mA h cm(-3) over 200 cycles at 0.5C, and a capacity greater than 1200 mA h cm(-3) at 10C. Importantly, the anode can even be formed into a commercially relevant ∼100 μm thick form. When assembled into a full cell the anode shows a good compatibility with a commercial LiMn2O4 cathode. In situ TEM observations confirm the electrode design accommodates the necessary volume expansion during lithiation.

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“…On the other hand, the conversion-based anode materials, such as Co 3 O 4 , Fe 3 O 4 , Fe 2 O 3 , Mn 2 O 3 and MoO 3 , could deliver relatively high reversible capacities ranging from 500 to 1000 mAh g -1 through their multiple oxidation states (M z O x + 2xLi + + 2xe -↔ zM + xLi 2 O, M = Co, Ni and Fe) [13][14][15][16][17]. Recently, the mixed-metal oxides such as Co 2 GeO 4 , Co 2 SnO 4 and Co 2 SiO 4 have been reported as the anode materials for high performance LIBs [18][19][20][21]. These mixed-metal oxides exhibited high capacity as well as good cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of M2GeO4(M = Co, Fe and Ni) as Anode Materials with High Capacity for Lithium-Ion Batteries

Sivalingam

Park

Veerasubramani

et al. 2017

J. Electrochem. Sci. Technol

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Hydrothermal synthesis and characterization of Co2.85Si0.15O4 solid solutions and its carbon composite as negative electrodes for Li-ion batteries

Cited by 23 publications

References 65 publications

Chromium(III) oxide carbon nanocomposites lithium-ion battery anodes with enhanced energy conversion performance

Chromium(III) oxide carbon nanocomposites lithium-ion battery anodes with enhanced energy conversion performance

High Volumetric Capacity Three-Dimensionally Sphere-Caged Secondary Battery Anodes

Electrochemical Performance of M2GeO4(M = Co, Fe and Ni) as Anode Materials with High Capacity for Lithium-Ion Batteries

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