Energy materials from footwear waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F23%3A63575078" target="_blank" >RIV/70883521:28610/23:63575078 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Energy materials from footwear waste

Popis výsledku v původním jazyce

In the present research, we have focused on finding the possibility to use waste from shoe manufacturing based on pigskin leather for the preparation of energy materials. Four types of leather carbonization and activation have been carried out: simple carbonization, two-step carbonization/activation, direct activation, and excess activation. A pyrolysis temperature of 800 °C was selected after the preliminary study and potassium hydroxide solution was used for the activation. All products had similar conductivity of the order of tenths to units S cm−1, which approximately corresponds to the conductivity of conducting polymers, such as polypyrrole. The products, however, highly differed in the specific surface area.The properties of the carbonized and activated samples allowed for the preparation of batteries on a semi-operational experimental line. Positive electrodes for Li-ion batteries type CR 2032 were prepared and tested. The charge/discharge capacity of 400 mAh g−1 after 50 charging cycles was reduced by approximately about 20%.The results demonstrate that the carbonized leather waste could contribute to the solution of two major problems: the first, the reuse of harmful chromium–tanned leather waste, and the second, the replacement of some strategic energy materials.

Název v anglickém jazyce

Energy materials from footwear waste

Popis výsledku anglicky

In the present research, we have focused on finding the possibility to use waste from shoe manufacturing based on pigskin leather for the preparation of energy materials. Four types of leather carbonization and activation have been carried out: simple carbonization, two-step carbonization/activation, direct activation, and excess activation. A pyrolysis temperature of 800 °C was selected after the preliminary study and potassium hydroxide solution was used for the activation. All products had similar conductivity of the order of tenths to units S cm−1, which approximately corresponds to the conductivity of conducting polymers, such as polypyrrole. The products, however, highly differed in the specific surface area.The properties of the carbonized and activated samples allowed for the preparation of batteries on a semi-operational experimental line. Positive electrodes for Li-ion batteries type CR 2032 were prepared and tested. The charge/discharge capacity of 400 mAh g−1 after 50 charging cycles was reduced by approximately about 20%.The results demonstrate that the carbonized leather waste could contribute to the solution of two major problems: the first, the reuse of harmful chromium–tanned leather waste, and the second, the replacement of some strategic energy materials.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials

Projekt

<a href="/cs/project/TK03030157" target="_blank" >TK03030157: Další generace all-solid-state Li-ion baterií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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