Title :

The organic-moiety-dominated Li+ intercalation/deintercalation mechanism of a cobalt-based metal–organic framework

Author(s) :

Li, Chao [Auteur]
Hu, Xiaoshi [Auteur]
Lou, Xiaobing [Auteur]
Zhang, Lijuan [Auteur]
Wang, Yong [Auteur]
Amoureux, Jean-Paul [Auteur]
Shen, Ming [Auteur]
Chen, Qun [Auteur]
Hu, Bingwen [Auteur]

Journal title :

Journal of Materials Chemistry A

Volume number :

4

Pages :

16245-16251

Publication date :

2016-09-27

HAL domain(s) :

Chimie/Chimie inorganique

English abstract : [en]

Metal–organic frameworks (MOFs) have advanced many application fields due to their intriguing structure. However, the application of MOFs in lithium-ion batteries (LIBs) is severely hindered by the lack of a detailed insight ...
Show more >Metal–organic frameworks (MOFs) have advanced many application fields due to their intriguing structure. However, the application of MOFs in lithium-ion batteries (LIBs) is severely hindered by the lack of a detailed insight into the delithiation and lithiation behaviors of MOFs. This study employs soft X-ray spectroscopy and high-resolution solid-state NMR techniques to study the electrochemical process of a seashell-like Co-based MOF. These experiments demonstrate that Li-ions are intercalated to the carboxyl groups and benzene rings of this MOF during cycling, accompanied by the distortion of CoO6 octahedral sites. Furthermore, the Co-MOF employing this organic-moiety-dominated intercalation/deintercalation mechanism exhibits high initial coulombic efficiency (80.4%) and unprecedented long-term cyclic stability (1021 mA h g−1 at 100 mA g−1 after 200 cycles; 601 mA h g−1 at 500 mA g−1 after 700 cycles; 435 mA h g−1 at 1 A g−1 after 1000 cycles) when evaluated as the anode material in LIBs. To our knowledge, this is the longest cycle life ever reported for a MOF-based lithium ion battery anode.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

RMN et matériaux inorganiques (RM2I)

Submission date :

2019-09-25T14:06:18Z