AlPO4-coated V2 O5 nanoplatelet and its electrochemical properties in aqueous electrolyte

2014 ◽  
Vol 86 (5) ◽  
pp. 651-659 ◽  
Author(s):  
Honglai Zhang ◽  
Jie Yang ◽  
Qichang Xiao ◽  
Zhaohui Li ◽  
Gangtie Lei ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Aqueous Electrolyte ◽  
Sol Gel ◽  
Rate Capability ◽  
Cycling Performance ◽  
Coated Sample ◽  
Rechargeable Lithium Batteries ◽  
Promising Application ◽  
Discharge Capacities ◽  
Good Rate Capability

Abstract Vanadium pentoxide (V2 O5) nanoplatelet was prepared through an exfoliation method by using β-cyclodextrin (β-CD) as intercalating template. To improve its electrochemical performance in the aqueous electrolyte, the nanoplatelet was coated with amorphous AlPO4 by sol-gel method. The effect of this coating layer on the rate and cycling properties is investigated by cyclic voltammetry and galvanostatic charge-discharge. The 1.6 % AlPO4-coated sample could deliver an initial capacity of 128 mAh g–1 at 0.1 C rate, and remain 99 % of the initial one after 50 cycles. The discharge capacities in the first cycle are 119, 113, and 104 mAh g–1 at the rates of 0.3, 1.5, and 3 C, respectively. The corresponding maintaining ratios are 98, 92, and 87 % after 50 cycles. The results suggest the AlPO4-coated V2 O5 nanoplatelet has good rate capability and cycling performance, indicating its promising application as an anode material in aqueous rechargeable lithium batteries.

LiV3O8 NANOMATERIAL AS ANODE WITH GOOD CYCLING PERFORMANCE FOR AQUEOUS RECHARGEABLE LITHIUM BATTERIES

2011 ◽  
Vol 04 (04) ◽  
pp. 315-318 ◽  
Author(s):  
L. L. LIU ◽  
W. TANG ◽  
S. TIAN ◽  
Y. SHI ◽  
Y. P. WU ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Anode Material ◽  
Lithium Batteries ◽  
Aqueous Electrolyte ◽  
Sol Gel ◽  
Cycling Performance ◽  
Cyclic Voltammograms ◽  
Rechargeable Lithium Batteries ◽  
Gel Method ◽  
Sol Gel Method

LiV3O8 nanorod material was prepared by a simple sol–gel method. The electrochemical properties of the as-prepared LiV3O8 in 0.5 M Li2SO4 aqueous electrolyte were studied through cyclic voltammograms (CV) and discharge–charge measurements. Experiments show that this nanorod material can deliver the capacities of 72, 62 and 53 mAh/g at 20, 50, 100 mA/g, respectively. After 50 cycles, it can maintain 64, 47 and 40 mAh/g, corresponding to 88%, 76% and 77% of the initial capacities, which suggest that this nanorode material presents good cycling performance as anode material for aqueous rechargeable lithium batteries.

Guar gum as a novel binder for sulfur composite cathodes in rechargeable lithium batteries

2016 ◽  
Vol 52 (92) ◽  
pp. 13479-13482 ◽  
Author(s):  
Qinyu Li ◽  
Huijun Yang ◽  
Lisheng Xie ◽  
Jun Yang ◽  
Yanna Nuli ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Guar Gum ◽  
Rate Capability ◽  
Composite Cathode ◽  
Cycling Performance ◽  
High Rate ◽  
Rechargeable Lithium Batteries ◽  
High Rate Capability ◽  
Composite Cathodes ◽  
Aqueous Binder

In this work, we investigate a novel aqueous binder which promotes S@pPAN composite cathode materials exhibiting excellent cycling performance and favorable high rate capability.

IMPROVING ELECTROCHEMICAL PERFORMANCE OF LiCoO2 BY TiO2 COATING AS CATHODE FOR AQUEOUS RECHARGEABLE LITHIUM BATTERIES

2013 ◽  
Vol 06 (02) ◽  
pp. 1350016 ◽  
Author(s):  
S. TIAN ◽  
L. L. LIU ◽  
Y. S. ZHU ◽  
Y. Y. HOU ◽  
C. L. HU ◽  
...  
Keyword(s):  
Current Density ◽  
Sol Gel ◽  
Rate Capability ◽  
Cycling Performance ◽  
X Ray Diffraction ◽  
Rechargeable Lithium Batteries ◽  
Capacity Fading ◽  
X Ray ◽  
Discharge Behavior ◽  
Initial Capacity

Modified LiCoO2 was prepared via a sol–gel method followed by a TiO2 coating and characterized by X-ray diffraction analysis, transmission electronic microscopy and various measurements of charge/discharge behavior. Its cycling performance and rate capability were greatly improved compared to the original LiCoO2 . The initial capacity of the TiO2 -coated LiCoO2 is 134 mAh g-1 at the current density of 5000 mA g-1. When the current density increases to 10,000 mA g-1, the cathode displays an initial capacity of 128 mAh g-1, much higher than that (<101 mAh g-1) for the virginal LiCoO2 , and shows no evident capacity fading after 100 cycles.

FABRICATION OF 3D MICROELECTRODES FOR LITHIUM ION BATTERIES BY ELECTROPHORETIC DEPOSITION

2009 ◽  
Vol 02 (01) ◽  
pp. 9-12 ◽  
Author(s):  
HIROKAZU MUNAKATA ◽  
TAKASHI SUGIURA ◽  
KIYOSHI KANAMURA
Keyword(s):  
Electrophoretic Deposition ◽  
Sol Gel ◽  
Rate Capability ◽  
Lithium Ion ◽  
Electrode Thickness ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
A Cell ◽  
Discharge Capacities ◽  
Good Rate Capability

An integrated array of thick Li 4 Ti 5 O 12 electrodes was fabricated by electrophoretic deposition (EPD). A precisely controlled electric field distribution by the three-electrode EPD system enabled the formation of Li 4 Ti 5 O 12 electrodes on the lines selected in the interdigitated microarray Au current collectors. The array of Li 4 Ti 5 O 12 electrodes exhibited good rate capability with larger discharge capacities than those of the electrode prepared by the sol–gel method, due to the increment of electrode thickness (0.6 μm → 4.2 μm) and the simultaneous deposition of conducting and binding materials with Li 4 Ti 5 O 12 particles. A cell consisting of the microarray Li 4 Ti 5 O 12, lithium metal anode, and poly(methyl methacrylate) gel electrolyte was successfully operated at 1.55 V and had the discharge capacity of 105.4 μ A h cm-2.

IMPROVING THE BATTERY PERFORMANCE OF LiVPO4F BY CHROMIUM DOPING

2013 ◽  
Vol 06 (06) ◽  
pp. 1350053 ◽  
Author(s):  
YANGHAO LIU ◽  
YOULONG XU ◽  
XIAOFEI SUN
Keyword(s):  
Rate Capability ◽  
Cycling Performance ◽  
High Energy ◽  
X Ray Diffraction ◽  
Rechargeable Lithium Batteries ◽  
X Ray ◽  
Chromium Doping ◽  
Specific Discharge ◽  
Cr Doping ◽  
Discharge Capacities

Polyanion LiVPO 4 F has been recently recognized as a promising high energy cathode material for next generation rechargeable lithium batteries. With the aim of performance advancement in this paper, 3 at.% chromium are used to dope LiVPO 4 F during carbothermal reduction synthesis. Rietveld refinement of X-ray diffraction pattern indicates that most of the chromium favors occupying the lithium site. Energy dispersive X-ray spectrum on selected area of the particle further demonstrates successful Cr doping into LiVPO 4 F . Both the rate capability and cycling performance of LiVPO 4 F are found noticeably improved possibly due to the stabilized crystalline structure and increased electric conductivity by Cr doping. The specific discharge capacities at C/24, C/5, 1 C and 8 C rates are 144.3, 135.1, 108.5 and 89.6 mA h g-1, respectively. Moreover, it delivers a capacity of 128.7 mA h g-1 at C/2 with the retention of 88.2% after 100 cycles.

Li0.95Na0.05Ti2(PO4)3/C with Good Performance as Anode Material for Aqueous Rechargeable Lithium Batteries

2014 ◽  
Vol 989-994 ◽  
pp. 316-319 ◽  
Author(s):  
Jing Zhu ◽  
Yong Guang Liu ◽  
Qing Qing Tian ◽  
Ling Wang ◽  
Ji Lin Cao
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Performance ◽  
Anode Material ◽  
Lithium Batteries ◽  
Sol Gel ◽  
Nasicon Structure ◽  
Galvanostatic Charge ◽  
Rechargeable Lithium Batteries ◽  
Structure And Morphology ◽  
Charge Discharge

Li0.95Na0.05Ti2(PO4)3/C nanocomposite was prepared by sol-gel method.The structure and morphology of the samples were characterized by XRD, SEM which showed the particles had typical NASICON structure and diameter range from 400~500nm. The electrochemical performance were tested by cyclic voltammetry and galvanostatic charge–discharge. Results show Li0.95Na0.05Ti2(PO4)3/C nanocomposite exhibitsmuch better electrochemical performance than bare Li0.95Na0.05Ti2(PO4)3.

scholarly journals Effect of surface carbonates on the cyclability of LiNbO3-coated NCM622 in all-solid-state batteries with lithium thiophosphate electrolytes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A-Young Kim ◽  
Florian Strauss ◽  
Timo Bartsch ◽  
Jun Hao Teo ◽  
Jürgen Janek ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolyte ◽  
Sol Gel ◽  
Rate Capability ◽  
Cycling Performance ◽  
Side Reactions ◽  
Bulk Solid ◽  
Solid State Batteries ◽  
The Individual ◽  
Surface Carbonates

AbstractWhile still premature as an energy storage technology, bulk solid-state batteries are attracting much attention in the academic and industrial communities lately. In particular, layered lithium metal oxides and lithium thiophosphates hold promise as cathode materials and superionic solid electrolytes, respectively. However, interfacial side reactions between the individual components during battery operation usually result in accelerated performance degradation. Hence, effective surface coatings are required to mitigate or ideally prevent detrimental reactions from occurring and having an impact on the cyclability. In the present work, we examine how surface carbonates incorporated into the sol–gel-derived LiNbO3 protective coating on NCM622 [Li1+x(Ni0.6Co0.2Mn0.2)1–xO2] cathode material affect the efficiency and rate capability of pellet-stack solid-state battery cells with β-Li3PS4 or argyrodite Li6PS5Cl solid electrolyte and a Li4Ti5O12 anode. Our research data indicate that a hybrid coating may in fact be beneficial to the kinetics and the cycling performance strongly depends on the solid electrolyte used.

Electrochemical performance of anodized TiO2 Nanotubes for rechargeable Lithium Batteries

2011 ◽  
Vol 1333 ◽  
Author(s):  
R. Prasada Rao ◽  
L. Kangle ◽  
S. Adams ◽  
M.V. Reddy ◽  
B.V.R. Chowdari
Keyword(s):  
Lithium Batteries ◽  
Coulombic Efficiency ◽  
Cycling Performance ◽  
Rechargeable Lithium Batteries ◽  
Electrochemical Test ◽  
Cycle Rate ◽  
Storage Performance ◽  
Electrochemical Storage ◽  
Charge Discharge ◽  
Discharge Curves

ABSTRACTThe electrochemical storage performance of anatase TiO2 nanotubes (NT) is compared to the performance of TiO2 nanotubes covered by sulfur. Charge/discharge curves and cycling performance of TiO2 NT with and without sulfur deposition with respect to lithium anodes are demonstrated in electrochemical test cells. At 0.5C cycle rate the TiO2 NT exhibited a first cycle specific charge/discharge capacity of 180/155 mAh/g, whereas the TiO2 NT deposited with sulfur showed a remarkably higher performance at 0.5C cycle rate with first cycle charge/ discharge specific capacities of 258/260 mAh/g and a coulombic efficiency of 98%.

Processing and Performance of V205 Xerogel, Aerogel, and Aerogellike Materials as Lithium Intercalation Hosts

1998 ◽  
Vol 548 ◽  
Author(s):  
Leland H. Manhart ◽  
Jun John Xu ◽  
Fabrice Coustier ◽  
Stefano Passerini ◽  
Boone B. Owens ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Methyl Formate ◽  
Sol Gel ◽  
Specific Capacity ◽  
Lithium Intercalation ◽  
Composite Electrodes ◽  
Rechargeable Lithium Batteries ◽  
Exchange Processes ◽  
And Performance ◽  
Sol Gel Synthesis

ABSTRACTVarious forms of vanadium pentoxide, including xerogel, aerogel, and aerogel-like forms, were prepared by sol-gel synthesis and processed by novel procedures following synthesis. It was demonstrated that the intrinsic thermodynamics of lithium intercalation of the ARG and ARG-like materials prepared by solvent exchange processes involving methyl formate (MF/ARG and MF/ARG-xslike) are identical, while they are drastically different from those of the parent XRG, which gives rise to significantly increased specific energies for the MF/ARG or MF/ARG-like as lithium intercalation hosts. All three forms are capable of reversibly intercalating up to four moles of Li+ ions per mole of V205 electrochemically and can be cathode candidates for rechargeable lithium batteries. Various processing methods for fabricating composite electrodes with the XRG led to specific capacity in the range of 300 to 350 mAh/g at C4Li/ 20 rate, and good cyclability.

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