Facile synthesis of porous LiMn2O4 spheres as cathode materials for high-power lithium ion batteries

Wang, Shaobin; Shao, Xuan; Xu, Haiyan; Xie, Ming; Deng, Sixu; Wang, Hao; Liu, Jingbing; Yan, Hui

doi:10.1016/j.jpowsour.2012.10.077

Cited by 133 publications

(57 citation statements)

References 38 publications

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“…16 gives a stable capacity of (~84.6mAh/g) and a cycle efficiency of ~60% at the end of 1000 th cycle with a current density of 100mAg -1 . [19] Moreover, recent studies on lithium insertion materials have paid focus on different morphologies which are in nano and microdimensions. [20,21] …”

Section: <Table 1>mentioning

confidence: 99%

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The fabrication of LiMn2O4 and Na1.16V3O8 based full cell aqueous rechargeable battery to power portable wearable electronics devices

et al. 2016

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Section: <Table 1>mentioning

confidence: 99%

“…7 more number of channels for the lithium intercalation and de-intercalation process [19] which ultimately provides better rate capabilities.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

The fabrication of LiMn2O4 and Na1.16V3O8 based full cell aqueous rechargeable battery to power portable wearable electronics devices

et al. 2016

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“…Unlike lithium manganese spinels obtained by means of nanochemistry routes [14,34] and showing high surface areas and clear hysteresis loops on nitrogen adsorption/ desorption curves, porosity data for our samples are much simpler (Fig. 4).…”

Section: Resultsmentioning

confidence: 75%

A new method of pretreatment of lithium manganese spinels and high-rate electrochemical performance of Li[Li0.033Mn1.967]O4

Potapenko

Chernukhin

Kirillov

2014

Mater Renew Sustain Energy

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Lithium manganese spinels tend to aggregate upon annealing and do not allow for attaining high discharge rates when used as cathodes in lithium-ion batteries. To obtain spinel samples of lower aggregation and better highrate properties, precursors synthesized by means of a citric acid-aided route are suggested to be pyrolyzed in an inert atmosphere, instead of pyrolysis in air. The synthesis of nanosized Li[Li 0.033 Mn 1.967 ]O 4 is described, and its characteristics including X-ray diffraction, scanning electron microscopy, and porosity, as well as electrochemical test results are presented. The particle size of the materials obtained is smaller, the degree of aggregation is lower, and high-rate properties are better than for analogues pyrolyzed in air. In particular, sample Li||Li[Li 0.033 Mn 1.967 ]O 4 cells deliver *60 mAh g -1 at the current loads of 4,000 mA g -1

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“…6 and 7). The first semicircle reflects the formation of the SEI layer and the second the charge transfer process, while the line at the lowfrequency region represents the diffusion process (of Li + in the electrolyte and SEI, or Li in solid electrodes) [48]. On the other hand, the impedance plots consisting of two semicircles may also be attributed to the anode/electrolyte interface (the high-frequency semicircle) and to the cathode/electrolyte interface (the low-frequency semicircle) [41].…”

Section: Galvanostatic Charging/dischargingmentioning

confidence: 99%

Properties of LiMn2O4 cathode in electrolyte based on ionic liquid with and without gamma-butyrolactone

Swiderska‐Mocek

2013

J Solid State Electrochem

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LiMn 2 O 4 was examined as a cathode material for the lithium-ion battery, working together with a room temperature ionic liquid electrolyte, obtained by dissolution of solid lithium bis(trifluoromethanesulphonyl)imide (LiNTf 2 ) in liquid N-methyl-N-propylpyrrolidinium bis (trifluoromethanesulphonyl) imide (MePrPyrNTf 2 ) with and without gamma-butyrolactone (GBL). The Li/LiMn 2 O 4 cell was tested by cyclic voltammetry, galvanostatic charging/ discharging, and with impedance spectroscopy. In the cyclic voltammograms for these electrolytes pairs of oxidation current peaks and reduction current peaks for the cathode are distinct, revealing typical characteristics of two-stage reversible-phase transformation of the spinel. The LiMn 2 O 4 cathode showed good cyclability and Coulombic efficiency (126 mAh g −1 after 50 cycles) working together with 0.7 M LiNTf 2 in MePrPyrNTf 2 +10 wt%. GBL ionic liquid electrolyte. At the C/7and C/5 rates, the LiMn 2 O 4 showed stable capacities of 124 and 120 mAh g −1 , respectively. Scanning electron microscopy images of pristine electrodes and those taken after electrochemical cycling showed changes which may be interpreted as a result of solid electrolyte interphase formation. The 0.7 M LiNTf 2 in MePrPyrNTf 2 and 0.7 M LiNTf 2 in MePrPyrNTf 2 +10 wt%. GBL electrolytes have a greater thermal stability range (no peak is observed below 230°C).

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Facile synthesis of porous LiMn2O4 spheres as cathode materials for high-power lithium ion batteries

Cited by 133 publications

References 38 publications

The fabrication of LiMn2O4 and Na1.16V3O8 based full cell aqueous rechargeable battery to power portable wearable electronics devices

The fabrication of LiMn2O4 and Na1.16V3O8 based full cell aqueous rechargeable battery to power portable wearable electronics devices

A new method of pretreatment of lithium manganese spinels and high-rate electrochemical performance of Li[Li0.033Mn1.967]O4

Properties of LiMn2O4 cathode in electrolyte based on ionic liquid with and without gamma-butyrolactone

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