Metal-organic framework for stable cyclability of Li-S batteries for space missions

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Metal-organic framework for stable cyclability of Li-S batteries for space missions

Popis výsledku v původním jazyce

The chemistry and technology of batteries are one of the key factors limiting the performance of satellites, space stations and vehicles in many space missions. Energy storage systems in space applications have to be able to operate in extreme environmental conditions, including pressure, temperature and radiation. In the space industry, it is favourable to take benefit of the latest and best battery technology. Long life cycle performance is necessary to carry out lengthy programmes. Lithium-sulphur batteries are regarded as one of the promising technologies for next-generation batteries due to their high theoretical capacity, energy density, the abundant and low-cost sulphur resources. However, lithium-sulphur batteries have some limitations which have to be solved before commercial application. One of the main shortcomings is the shuttle effect of lithium polysulphides during cycling. Polysulphide shuttle can be suppressed by application of porous matrix in the cathode material. In the proposed approach, the metal-organic framework MOF-76(Gd) was applied as a support for sulphur in lithium-sulphur batteries. MOF-76(Gd) as a porous and conductive part of cathode material shows successful sulphur capture and encapsulation. Sulphur encapsulation was accompanied by stable cycle performance and high efficiency. Consequently, the cathode material displayed a high initial discharge capacity of 687.4 mAh g-1 (3.42 mAh) at 0.5 C, and after 50 cycles, the capacity reached 104 % of the original value.

Název v anglickém jazyce

Metal-organic framework for stable cyclability of Li-S batteries for space missions

Popis výsledku anglicky

The chemistry and technology of batteries are one of the key factors limiting the performance of satellites, space stations and vehicles in many space missions. Energy storage systems in space applications have to be able to operate in extreme environmental conditions, including pressure, temperature and radiation. In the space industry, it is favourable to take benefit of the latest and best battery technology. Long life cycle performance is necessary to carry out lengthy programmes. Lithium-sulphur batteries are regarded as one of the promising technologies for next-generation batteries due to their high theoretical capacity, energy density, the abundant and low-cost sulphur resources. However, lithium-sulphur batteries have some limitations which have to be solved before commercial application. One of the main shortcomings is the shuttle effect of lithium polysulphides during cycling. Polysulphide shuttle can be suppressed by application of porous matrix in the cathode material. In the proposed approach, the metal-organic framework MOF-76(Gd) was applied as a support for sulphur in lithium-sulphur batteries. MOF-76(Gd) as a porous and conductive part of cathode material shows successful sulphur capture and encapsulation. Sulphur encapsulation was accompanied by stable cycle performance and high efficiency. Consequently, the cathode material displayed a high initial discharge capacity of 687.4 mAh g-1 (3.42 mAh) at 0.5 C, and after 50 cycles, the capacity reached 104 % of the original value.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IAC: Proceedings of the International Astronautical Congress

ISBN

9781713843092

ISSN

0074-1795

e-ISSN

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Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

International Astronautical Federation, IAF

Místo vydání

neuveden

Místo konání akce

Dubai

Datum konání akce

25. 10. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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