The effects of PVB additives in MOFs-based solid composite electrolytes for all-solid-state lithium metal batteries

[Display omitted] •PVB additives were firstly introduced to the solid composite electrolytes (SCEs).•The SCE has a high lithium-ion transference number (t+ =0.72).•At 3C, a capacity of around 100 mAh g−1 was also achieved. All solid-state lithium-ion batteries (ASSLBs) are thought to benefit from us...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2022-12, Vol.926, p.116935, Article 116935
Main Authors: Zhang, Qi, Wei, Tao, Lu, Jiahao, Sun, Cheng, Zhou, Yanyan, Wang, Mengting, Liu, Ye, Xiao, Beibei, Qiu, Xiangyun, Xu, Shoudong
Format: Article
Language:English
Subjects:
Additives
All solid-state lithium-ion batteries (ASSLBs)
Electrolytes
Ion currents
Lithium
Lithium batteries
Lithium-ion batteries
Metal-organic frameworks
Molten salt electrolytes
PVB
PVDF-HFP
Rechargeable batteries
Short circuits
Solid composite electrolytes (SCEs)
Solid electrolytes
Solid state
UiO-67
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •PVB additives were firstly introduced to the solid composite electrolytes (SCEs).•The SCE has a high lithium-ion transference number (t+ =0.72).•At 3C, a capacity of around 100 mAh g−1 was also achieved. All solid-state lithium-ion batteries (ASSLBs) are thought to benefit from using solid composite electrolytes (SCEs) to increase their energy density and safety. In this study, we firstly introduce the PVB additives to SCEs and prepared a SCE composed of a mixture of nanostructured MOFs (UiO-67), PVDF-HFP, PVB, and LiTFSI. Electrochemical characterizations of the SCEs (EIS, LSV, CV and battery test) were also conducted. The SCE UBP-2 (PVB:PVDF-HFP = 1:10) shows a high lithium-ion transference number (tLi+ =0.72) and good ionic conductivity (3.27×10−4 S cm−1 at 60 °C). A symmetric Li cell with SCE UBP-2 can be continuously cycled at 0.1 mA cm−2 for more than 2500 h without experiencing a short circuit. The full cell (LiFePO4/UBP-2/Li) also maintained a high reversible discharge capacity of 154.9 mAh g−1 at 0.1C after 200 cycles at 60 °C. At 3C, a capacity of around 100 mAh g−1 was also achieved. This work might help to enhance the development of the forthcoming all solid-state batteries.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2022.116935