Unraveling synergistic mixing of SnO2–TiO2 composite as anode for Li-ion battery and their electrochemical properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43933907" target="_blank" >RIV/60461373:22310/21:43933907 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1557/s43578-021-00313-3" target="_blank" >https://link.springer.com/article/10.1557/s43578-021-00313-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1557/s43578-021-00313-3" target="_blank" >10.1557/s43578-021-00313-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unraveling synergistic mixing of SnO2–TiO2 composite as anode for Li-ion battery and their electrochemical properties

Popis výsledku v původním jazyce

Abstract: The effect of Sn/Ti ratio on the electrochemical properties of the anode is studied in Sn-doped TiO2 and SnO2–TiO2 nanofibers synthesized using a pilot-scale electrospinning system. Changes in the lattice structure of TiO2 due to the presence of Sn are studied through X-ray diffraction and high-resolution transmission electron microscopy. Lowering of electrochemical potential (vs Li/Li+) is observed alongside the enhanced capacity (400–600 mAh g−1) with increasing Sn content. Formation of SnO2 grain in sample with high Sn content (70 wt%) shows detrimental effect on cycling stability due to severe volume changes during lithiation/delithiation. We show that the relative fraction of TiO2 and SnO2 framework determines whether the composite is high capacity or high stability. In overall, SnO2–TiO2 composite anode with optimized Sn/Ti ratio can be used for high energy density, cycling stability and working potential lithium-ion battery. Graphic abstract: The relative fraction of TiO2 and SnO2 framework determines whether the composite is high capacity or high stability[Figure not available: see fulltext.] © 2021, The Author(s), under exclusive licence to The Materials Research Society.

Název v anglickém jazyce

Unraveling synergistic mixing of SnO2–TiO2 composite as anode for Li-ion battery and their electrochemical properties

Popis výsledku anglicky

Abstract: The effect of Sn/Ti ratio on the electrochemical properties of the anode is studied in Sn-doped TiO2 and SnO2–TiO2 nanofibers synthesized using a pilot-scale electrospinning system. Changes in the lattice structure of TiO2 due to the presence of Sn are studied through X-ray diffraction and high-resolution transmission electron microscopy. Lowering of electrochemical potential (vs Li/Li+) is observed alongside the enhanced capacity (400–600 mAh g−1) with increasing Sn content. Formation of SnO2 grain in sample with high Sn content (70 wt%) shows detrimental effect on cycling stability due to severe volume changes during lithiation/delithiation. We show that the relative fraction of TiO2 and SnO2 framework determines whether the composite is high capacity or high stability. In overall, SnO2–TiO2 composite anode with optimized Sn/Ti ratio can be used for high energy density, cycling stability and working potential lithium-ion battery. Graphic abstract: The relative fraction of TiO2 and SnO2 framework determines whether the composite is high capacity or high stability[Figure not available: see fulltext.] © 2021, The Author(s), under exclusive licence to The Materials Research Society.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MATERIALS RESEARCH

ISSN

0884-2914

e-ISSN

2044-5326

Svazek periodika

36

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

"4120 "- 4130

Kód UT WoS článku

000680967100002

EID výsledku v databázi Scopus

2-s2.0-85111172563