Improvement of the electrochemical performance of nanosized α-MnO2 used as cathode material for Li-batteries by Sn-doping

Hashem, Ahmed M.; Abdel-Latif, Abdel M.; Abuzeid, Hanaa M.; Abbas, Hossam H.; Ehrenberg, Helmut; Farag, R. S.; Mauger, A.; Julien, C.

doi:10.1016/j.jallcom.2011.07.075

Cited by 66 publications

(47 citation statements)

References 29 publications

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“…The presence of K + is the key parameter, which governs the properties of these materials. Recently, [46,47]. These results appear to be in good agreement with those obtained by Xray diffraction as the degree of crystallinity also affects the local atomic environment, i.e.…”

supporting

confidence: 80%

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Hashem

Abuzeid

Kaus

et al. 2018

Electrochimica Acta

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supporting

confidence: 80%

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Hashem

Abuzeid

Kaus

et al. 2018

Electrochimica Acta

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“…Porous and textured materials provide high surface area as well. However, as they exhibit problems with cyclability due to structural changes or reactive surface groups [17], nanomaterials seem to be more promising and have gained strong attention [18][19][20][21][22][23]. The most important added value of nanoparticle cathodes is the possibility to use insolating materials.…”

Section: Nanomaterials For Cathodesmentioning

confidence: 99%

Cathodes - Technological review

Cherkouk

Nestler

2014

AIP Conference Proceedings

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Abstract. Lithium cobalt oxide (LiCoO 2 ) was already used in the first commercialized Li-ion battery by SONY in 1990. Still, it is the most frequently used cathode material nowadays. However, LiCoO 2 is intrinsically unstable in the charged state, especially at elevated temperatures, and in the overcharged state causing volume changes and transport limitation for high power batteries. In this paper, some technological aspects with large impact on cell performance from the cathode material point of view will be reviewed. At first, it will be focused on the degradation processes and life-time mechanisms of the cathode material LiCoO 2 . Electrochemical and structural results on commercial Li-ion batteries recorded during the cycling will be discussed. Thereafter, advanced nanomaterials for new cathode materials will be presented.

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“…Ion promoted mesoporous manganese oxides (UCT-18-X, X= Mg 2+ , Ca 2+ , K + , Na + and Cs + ) having trace amount of alkali metal ions were tested for selective aerobic alcohol oxidation and the catalytic activity following the order of UCT-1 <UCT-18-Mg <UCT-18-Ca <UCT-18-K<UCT-18-Na <UCT-18-Cs. Nanosized α-MnO 2 with Sn-doping is shown to be the electrode material with improved capacity retention for Li ion batteries recently [17].…”

Section: Introductionmentioning

confidence: 99%

ORR Electrocatalysis on Cr³⁺, Fe²⁺, Co²⁺-Doped Manganese(IV) Oxides

et al. 2018

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The ionic dopant additives have different mechanisms of their influence upon MnO2 electrocrystallisation process and depending on dopants added the following polymorphs are stabilised: α-MnO2 (hollandite, I4/m) -NH + 4 ; γ-MnO2 (ramsdellite, P bnm) -Co 2+ , Fe 2+ ; layered polymorph δ-MnO2 (birnessite, C2/m) -Cr 3+ . The defect states of intergrowth method in ramsdellite matrix and twinning, OH groups studied by X-ray diffraction and the Fourier transform infrared mtehod, respectively, indicate their high content in case of Fe 2+ and Co 2+ -doped manganese dioxide. CVA oxygen reduction reaction peaks were established after experiments in alkaline electrolytes and dioxygen (argon, air) atmosphere. Activity of doped samples studied is comparable with other published data. Both doped with Co 2+ and Fe 2+ samples display maximal currents and some distinctive features in oxygen reduction reaction.

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Improvement of the electrochemical performance of nanosized α-MnO2 used as cathode material for Li-batteries by Sn-doping

Cited by 66 publications

References 29 publications

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Cathodes - Technological review

ORR Electrocatalysis on Cr³⁺, Fe²⁺, Co²⁺-Doped Manganese(IV) Oxides

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Improvement of the electrochemical performance of nanosized α-MnO2 used as cathode material for Li-batteries by Sn-doping

Cited by 66 publications

References 29 publications

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Green synthesis of nanosized manganese dioxide as positive electrode for lithium-ion batteries using lemon juice and citrus peel

Cathodes - Technological review

ORR Electrocatalysis on Cr3+, Fe2+, Co2+-Doped Manganese(IV) Oxides

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ORR Electrocatalysis on Cr³⁺, Fe²⁺, Co²⁺-Doped Manganese(IV) Oxides