Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00554275" target="_blank" >RIV/61388955:_____/22:00554275 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/22:10447157

Výsledek na webu

<a href="http://hdl.handle.net/11104/0328906" target="_blank" >http://hdl.handle.net/11104/0328906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10008-022-05115-z" target="_blank" >10.1007/s10008-022-05115-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries

Popis výsledku v původním jazyce

The addition of nanocrystalline titanium dioxide (P90) to a cathode of Li/S cell enhances its voltammetric charge capacity by 19%, from which only a small fraction (ca. 1%) is assignable to the intrinsic Li-storage in TiO2. The flatband potential of anatase (the main component of P90) and rutile (the second main component of P90) equals 2.1 V vs. Li+/Li for both anatase and rutile. The S-8 reduction is triggered at the same potential, confirming that TiO2 behaves like an ideally rectifying semiconductor electrode for sulfur. The modification of glass-fiber separator by P90 further improves the charge capacity of the Li/S cell. Titanium dioxide is active in the Li/S cell not only for immobilization of polysulfides on the sulphiphilic surface but also due to its inherent electrochemical activity for sulfur reduction at potentials negative to V-fb.

Název v anglickém jazyce

Inherent electrochemical activity of TiO2 (anatase, rutile) enhances the charge capacity of cathodes of lithium-sulfur batteries

Popis výsledku anglicky

The addition of nanocrystalline titanium dioxide (P90) to a cathode of Li/S cell enhances its voltammetric charge capacity by 19%, from which only a small fraction (ca. 1%) is assignable to the intrinsic Li-storage in TiO2. The flatband potential of anatase (the main component of P90) and rutile (the second main component of P90) equals 2.1 V vs. Li+/Li for both anatase and rutile. The S-8 reduction is triggered at the same potential, confirming that TiO2 behaves like an ideally rectifying semiconductor electrode for sulfur. The modification of glass-fiber separator by P90 further improves the charge capacity of the Li/S cell. Titanium dioxide is active in the Li/S cell not only for immobilization of polysulfides on the sulphiphilic surface but also due to its inherent electrochemical activity for sulfur reduction at potentials negative to V-fb.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA20-03564S" target="_blank" >GA20-03564S: Nové hostitelské materiály a struktury pro pokročilé baterie lithium-síra</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Electrochemistry

ISSN

1432-8488

e-ISSN

1433-0768

Svazek periodika

26

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

639-647

Kód UT WoS článku

000742794800001

EID výsledku v databázi Scopus

2-s2.0-85123075845