On the Interface between Porcelain and Titanium

Li, Guo; Liu, Xiao Chen; Guo, Tieding; He, Zeng Ying

doi:10.4028/www.scientific.net/kem.368-372.1618

Cited by 8 publications

(10 citation statements)

References 6 publications

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“…XRD analysis indicates that the temperature and time to obtain single phase LiMn 2 O 4 by the molten salt combustion method are only 600 o C and 6h. They are much lower than these reported in the literatures, in which the products were prepared by other methods [9][10][11]. And also, compared with the molten salt method [6], the temperature and time are much lower, but the process is much simpler.…”

Section: Resultsmentioning

confidence: 76%

Molten Salt Combustion Synthesis of LiMn2O4 at 600°C: the Effect of Calcination Time

Liu

Guo²,

Wang³

et al. 2011

AMR

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Spinel LiMn2O4 were prepared by a molten salt combustion method at 600°C. The phase composition of the products was investigated by X-ray diffraction (XRD), and the electrochemical performance was tested by a coin-type self battery. XRD results presented that the purity and the crystallinity of the products increased with extending calcining time. Single phase LiMn2O4 could be prepared at 600°C for 6 and 12h. The ratio of lithium/manganese also affected the phase compositions of the products. The purity and crystallinity of the product with the molar ratio of Li/Mn=1.1/2 were higher than these of the product with the molar ratio of Li/Mn=1.05/2. The performance tests indicated that the electrochemical performance of the product prepared at 600°C for 6h is the best. The initial discharge capacity was 112.8mAh/g, and after 20 cycles, the capacity retention is 81.8%. The product with Li/Mn=1.1/2 had better electrochemical performance than the product with Li/Mn=1.05/2.

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Section: Resultsmentioning

confidence: 76%

Molten Salt Combustion Synthesis of LiMn2O4 at 600°C: the Effect of Calcination Time

Liu

Guo²,

Wang³

et al. 2011

AMR

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“…It is also gotten that all the diffraction peaks of patterns MSC400, MSC500 and MSC600 correspond to a single-phase of cubic spinel structure with a space group Fd-3m (JCPDS 35-0782), and the strong diffraction peaks indicate good cystallinity of the obtained LiMn2O4. The calcination temperature and time for pattern MSC400 are only 400oC and 5h, they are much lower than those of prepared by CSC method in Yang [11] and Guo's [12] studies. For the pattern CSC400 prepared by CSC method in this paper, the diffraction peaks of Mn2O3 are the strongest, indicating the most relative content of impurity in the product.…”

Section: Resultsmentioning

confidence: 81%

“…However, the electrochemical performance of the product prepared by conventional solution combustion synthesis (CSC) at low temperature is not good, because of the low purity and crystallinity of the products [10]. In order to get single phase LiMn2O4 with good performance, high temperature and long time are needed [11,12].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Synthesis of Improved LiMn2O4 by a Modified Solution Combustion Synthesis

Liu

Guo

Wang³

2010

AMR

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Pure and highly crystalline spinel LiMn2O4 has been successfully prepared by a modified solution combustion synthesis (MSC) method at 400oC for 5h, while strong Mn2O3 impurity is present in the product prepared by conventional solution combustion synthesis (CSC) method on the same conditions. The particle size of LiMn2O4 prepared by MSC method is about 200 nm with a uniformly distribution. Electrochemical tests indicate that the LiMn2O4 prepared by MSC method exhibits a higher capacity, better cycle life and better rate capability than that of prepared by CSC method. It is proved that some disadvantages (such as low purity and bad crystallinity) of CSC method at low temperature can be improved efficiently by MSC method.

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“…The method which uses the nitrate and acetate of lithium and manganese as raw materials, among the raw materials, using nitrate as the oxidant and acetate salt of reductant, resulting in just redox reaction by changing the molar ratio (NO 3-/Ac -) and the heating temperature. In our research, the obtained products have high purity, good crystallinity, and disperseing quality, showing high capacity and good cycling behavior [12]. In this paper, the study of Cr doping is based on this theoretical basis.…”

Section: Introductionmentioning

confidence: 96%

Effect of Cr Doping on Electrochemical Performance of LiMn2O4

Zhang

Chen

Xiang

et al. 2013

AMR

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The LiCrxMn2-xO4 material used for lithium ion battery cathode material was successfully prepared by a molten-salt flameless combustion synthesis method which used the LiNO3, LiAc•2H2O, Mn(NO3)2, MnAc2•4H2O as raw materials and Cr(NO3)3•9H2O as dopant. The results indicated that, the high-purity spinel LiCrxMn2-xO4was successfully prepared although including a little Mn3O4. The impurity peak intensity of Mn3O4gradually weakened until it disappeared with the increase of the amount of Cr-doped. The product was monophasic LiCrxMn2-xO4when x (Cr) ≥ 0.1. It can be found that with Cr doped, the aggregation of the sample decreased. The structural stability, electrochemical activity and reversibility of LiCrxMn2-xO4was better than that of pristine LiMn2O4. The discharge capacity and capacity retention had been improved. The LiCr0.02Mn1.98O4had the highest initial capacity of 120.7 mAh•g-1and the capacity retention was 78.5% after 40 cycles.

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On the Interface between Porcelain and Titanium

Cited by 8 publications

References 6 publications

Molten Salt Combustion Synthesis of LiMn<sub>2</sub>O<sub>4</sub> at 600°C: the Effect of Calcination Time

Molten Salt Combustion Synthesis of LiMn<sub>2</sub>O<sub>4</sub> at 600°C: the Effect of Calcination Time

Low-Temperature Synthesis of Improved LiMn<sub>2</sub>O<sub>4</sub> by a Modified Solution Combustion Synthesis

Effect of Cr Doping on Electrochemical Performance of LiMn<sub>2</sub>O<sub>4</sub>

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