Metal-organic framework MIL-101(Fe)eNH2 as an efficient host for sulphur storage in long-cycle Li-S batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU136788" target="_blank" >RIV/00216305:26220/20:PU136788 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0013468620310331?dgcid=coauthor#" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468620310331?dgcid=coauthor#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2020.136640" target="_blank" >10.1016/j.electacta.2020.136640</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metal-organic framework MIL-101(Fe)eNH2 as an efficient host for sulphur storage in long-cycle Li-S batteries

Popis výsledku v původním jazyce

Porous metal-organic framework (MOF) MIL-101(Fe)–NH2 was synthesized, characterized and used as a host material for sulphur in the context of lithium-sulphur batteries. The MIL-101(Fe)–NH2 support possessed, a large surface area, close to 3500 m2 g−1, and mild framework stability up to 120 °C. As the framework stability strongly depends on the presence of guests in the micro/mesoporous cages, conditions for sulphur inclusion process were carefully selected, and then the material was further carbonized. MOF as a conductive part of cathode material displayed successful sulphur capture and encapsulation. The encapsulation of sulphur was accompanied by highly stable charge/discharge cycle performances and high efficiency. Consequently, the cathode showed at a current rate 0.5C a high initial discharge capacity of 705 mA h g−1 and after 200 cycles of 476 mA h g−1, corresponding to a low fading rate of 0.162% per cycle. The capacity of the cycle after self-discharge was 94.8% of the capacity in the cycle before self-discharge.

Název v anglickém jazyce

Metal-organic framework MIL-101(Fe)eNH2 as an efficient host for sulphur storage in long-cycle Li-S batteries

Popis výsledku anglicky

Porous metal-organic framework (MOF) MIL-101(Fe)–NH2 was synthesized, characterized and used as a host material for sulphur in the context of lithium-sulphur batteries. The MIL-101(Fe)–NH2 support possessed, a large surface area, close to 3500 m2 g−1, and mild framework stability up to 120 °C. As the framework stability strongly depends on the presence of guests in the micro/mesoporous cages, conditions for sulphur inclusion process were carefully selected, and then the material was further carbonized. MOF as a conductive part of cathode material displayed successful sulphur capture and encapsulation. The encapsulation of sulphur was accompanied by highly stable charge/discharge cycle performances and high efficiency. Consequently, the cathode showed at a current rate 0.5C a high initial discharge capacity of 705 mA h g−1 and after 200 cycles of 476 mA h g−1, corresponding to a low fading rate of 0.162% per cycle. The capacity of the cycle after self-discharge was 94.8% of the capacity in the cycle before self-discharge.

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/LM2018110" target="_blank" >LM2018110: Výzkumná infrastruktura CzechNanoLab</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Electrochimica Acta

ISSN

0013-4686

e-ISSN

1873-3859

Svazek periodika

neuveden

Číslo periodika v rámci svazku

354

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000569143100008

EID výsledku v databázi Scopus

2-s2.0-85087326930