The Role of Self-Organized TiO2 Nanotube Thickness on the Electrochemical Performance of Anodes for Li-Ion Microbatteriess

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU152383" target="_blank" >RIV/00216305:26620/24:PU152383 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/24:39921806

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/ente.202400528" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/ente.202400528</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ente.202400528" target="_blank" >10.1002/ente.202400528</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Role of Self-Organized TiO2 Nanotube Thickness on the Electrochemical Performance of Anodes for Li-Ion Microbatteriess

Popis výsledku v původním jazyce

Self-organized TiO2 nanotube (TNT) layers with different thicknesses are prepared by anodization of Ti foils and then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques to be used as potential anodes for Li-ion microbatteries. Electrochemical behaviors between 1 and 190 mu m thick electrodes, which are the thickest ever studied layers as electrode, have been evaluated by cyclic voltammetry (CV) and chronopotentiometry at various kinetics. The highest areal capacity is obtained for TNT layers of 190 mu m providing an initial discharge capacity of approximate to 5.3 mAh cm(-2) at C/10. At faster kinetics, the approximate to 80 mu m thick TNT layer reveals the best electrochemical behavior by offering 256 mu Ah cm(-2) at 5 C and a good stability for 200 cycles at C/5. The influence of the increasing thickness on the electrochemical performance at fast rates can be attributed to the uncomplete reaction of TNT layers with Li ions and the enhancement of the formation of a solid electrolyte interphase. It is also shown that a very thick electrode is not able to sustain long and very fast cycles due to the mechanical deformations occurring during the successive insertion/extraction of Li ions.

Název v anglickém jazyce

The Role of Self-Organized TiO2 Nanotube Thickness on the Electrochemical Performance of Anodes for Li-Ion Microbatteriess

Popis výsledku anglicky

Self-organized TiO2 nanotube (TNT) layers with different thicknesses are prepared by anodization of Ti foils and then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques to be used as potential anodes for Li-ion microbatteries. Electrochemical behaviors between 1 and 190 mu m thick electrodes, which are the thickest ever studied layers as electrode, have been evaluated by cyclic voltammetry (CV) and chronopotentiometry at various kinetics. The highest areal capacity is obtained for TNT layers of 190 mu m providing an initial discharge capacity of approximate to 5.3 mAh cm(-2) at C/10. At faster kinetics, the approximate to 80 mu m thick TNT layer reveals the best electrochemical behavior by offering 256 mu Ah cm(-2) at 5 C and a good stability for 200 cycles at C/5. The influence of the increasing thickness on the electrochemical performance at fast rates can be attributed to the uncomplete reaction of TNT layers with Li ions and the enhancement of the formation of a solid electrolyte interphase. It is also shown that a very thick electrode is not able to sustain long and very fast cycles due to the mechanical deformations occurring during the successive insertion/extraction of Li ions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Energy Technology

ISSN

2194-4288

e-ISSN

2194-4296

Svazek periodika

12

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

„“-„“

Kód UT WoS článku

001273118200001

EID výsledku v databázi Scopus

2-s2.0-85198973881