Synthesis of Li4Mn5O12and its application to the non-aqueous hybrid capacitor

Kim, Hunuk; Sun, Yang Kook; Shin, Kyung Shik; Jin, Chang Soo

doi:10.1088/0031-8949/2010/t139/014053

Cited by 4 publications

(5 citation statements)

References 18 publications

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“…To eliminate a severe reduction in the capacity during long-term cycling, Wang et al 259 prepared Cr-substituted LiMn 2 O 4 samples by the urea-assisted combustion method and found that partial substitution of Mn 3+ by Cr 3+ can increase the stability of the spinel structure and improve the cycling performance. Kim et al 260 also reported that Li 4 Mn 5 O 12 obtained by combustion synthesis showed good properties because of its large specific surface area.…”

Section: Energy Storage and Conversionmentioning

confidence: 97%

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

et al. 2015

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The design and synthesis of metal oxide nanomaterials is one of the key steps for achieving highly efficient energy conversion and storage on an industrial scale. Solution combustion synthesis (SCS) is a time- and energy-saving method as compared with other routes, especially for the preparation of complex oxides which can be easily adapted for scale-up applications. This review summarizes the synthesis of various metal oxide nanomaterials and their applications for energy conversion and storage, including lithium-ion batteries, supercapacitors, hydrogen and methane production, fuel cells and solar cells. In particular, some novel concepts such as reverse support combustion, self-combustion of ionic liquids, and creation of oxygen vacancies are presented. SCS has some unique advantages such as its capability for in situ doping of oxides and construction of heterojunctions. The well-developed porosity and large specific surface area caused by gas evolution during the combustion process endow the resulting materials with exceptional properties. The relationship between the structural properties of the metal oxides studied and their performance is discussed. Finally, the conclusions and perspectives are briefly presented.

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Section: Energy Storage and Conversionmentioning

confidence: 97%

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

et al. 2015

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“…All the samples showed stable performance after 50 cycles and sample S09 exhibited the best discharge capacity of 72 mAh g −1 . Kim et al [18] reported that the Li 4 Mn 5 O 12 phase, prepared at 400 °C for 5 h, exhibited the discharge capacity of 46 mAh g −1 at a C/5 rate.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…The aqueous asymmetric supercapacitor AC/Li 4 Mn 5 O 12 presents a specific capacitance (C sp ) of 43 F g −1 in the potential range 0-1.4 V at the rate of 100 mA g −1 . Kim et al [18] have synthesized nano-Li 4 Mn 5 O 12 using the solution combustion method at 400 °C for 5 h. They have developed a non-aqueous asymmetric supercapacitor AC/Li 4 Mn 5 O 12 for whichC sp reached 55 F g −1 in the potential range of 1.0-2.5 V.…”

Section: Introductionmentioning

confidence: 99%

“…Theoretically, Li 4 Mn 5 O 12 has a specific capacity of 163 mAh g −1 in the 3 V region and no capacity in the 4 V region due to the valence 4+ of the manganese ion. Nonstoichiometric Li 4 Mn 5 O 12 exhibited oxidation-reduction in the 4 V region due to the existence of Mn 3+ , and typically a low discharge capacity of 60 mAh g −1 at the C/20 rate in 3.5-4.5 V [18]. Therefore, we propose using non-stoichiometric and nanocrystalline Li 4 Mn 5 O 12 to increase the power density of hybrid capacitors as well as their rate charge-discharge capability.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical properties of non-stoichiometric nanocrystalline Li ₄ Mn ₅ O ₁₂ for hybrid capacitors

Tran

Huynh

et al. 2016

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Non-stoichiometric nanocrystalline Li4Mn5O12 was synthesized using the sol–gel method with citric acid at a low-temperature. The effects of the pH condition on the structure, morphology and electrochemical properties were investigated. X-ray diffraction patterns and scanning electron microscopy images confirmed that all the samples crystallized in spinel structures with a particle size in the nanometric scale. Transmission electron microscopy images showed that particle size varied from 50–100 nm. The Li4Mn5O12 was tested as an electrode material in half-cell Li/Li4Mn5O12 and in full-cell vulcanized carbon/Li4Mn5O12 at a high rate charge–discharge. Among the samples, Li4Mn5O12 (prepared at pH = 9) exhibited the best electrochemical capacitive performance in an aqueous hybrid capacitor full-cell AC/Li4Mn5O12 as well as in an non-aqueous Li/Li4Mn5O12 half-cell. The specific sample delivered a power density of 20 F g−1 at a high discharge rate of 4 A g−1 and an energy density of 31.1 Wh g−1.

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“…[1][2][3][4][5] 1) Therefore, we expect that it is possible to synthesize at low temperature for short time as well as Li 2 Mn 3 O 7 is also possible to use cathode material in hybrid capacitor. Hence, hybrid capacitor using Li 2 Mn 3 O 7 has been studied, yet.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Li₂Mn₃O₇and Application to Hybrid Capacitor

Kim¹,

Shin²,

Lee³

et al. 2010

Journal of Electrochemical Science and Technology

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:In order to apply hybrid capacitor, Li 2 Mn 3 O 7 was synthesized by combustion method using LiNO 3 , Li(CH 3 COO)·2H 2 O and Mn(CH 3 COO) 2 ·4H 2 O. Spinel pattern was identified the samples calcined over 400 o C in XRD. Intensity of Mn 2 O 3 peak increased as the calcination temperature increased. To decide n/p ratio and to investigate electrochemical properties, charge-discharge tests of Li/ Li 2 Mn 3 O 7 and Li/AC half-cell were carried out. Applying to AC/Li 2 Mn 3 O 7 hybrid capacitor, it had high discharge capacitance of 32.8 F/cc at 100 mA/g.

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Synthesis of Li₄Mn₅O₁₂and its application to the non-aqueous hybrid capacitor

Cited by 4 publications

References 18 publications

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

Electrochemical properties of non-stoichiometric nanocrystalline Li ₄ Mn ₅ O ₁₂ for hybrid capacitors

Synthesis of Li₂Mn₃O₇and Application to Hybrid Capacitor

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Synthesis of Li4Mn5O12and its application to the non-aqueous hybrid capacitor

Cited by 4 publications

References 18 publications

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion

Electrochemical properties of non-stoichiometric nanocrystalline Li 4 Mn 5 O 12 for hybrid capacitors

Synthesis of Li2Mn3O7and Application to Hybrid Capacitor

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Synthesis of Li₄Mn₅O₁₂and its application to the non-aqueous hybrid capacitor

Electrochemical properties of non-stoichiometric nanocrystalline Li ₄ Mn ₅ O ₁₂ for hybrid capacitors

Synthesis of Li₂Mn₃O₇and Application to Hybrid Capacitor