TY - JOUR
T1 - Foldable Solid-state Batteries Enabled by Electrolyte Mediation in Covalent Organic Frameworks
AU - Guo, Dong
AU - Shinde, Digambar
AU - Shin, Woochul
AU - Abou-Hamad, Edy
AU - Emwas, Abdul-Hamid
AU - Lai, Zhiping
AU - Manthiram, Arumugam
N1 - KAUST Repository Item: Exported on 2022-04-21
Acknowledged KAUST grant number(s): URF/1/3769-01
Acknowledgements: Supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering under award number DE-SC0005397. The synthesis and part of the characterization work were supported by the KAUST Competitive Fund URF/1/3769-01
PY - 2022/3/25
Y1 - 2022/3/25
N2 - Solid-state electrolytes with high Li+ conductivity, flexibility, durability, and stability offer an attractive solution to enhance safety and energy density. However, meeting these stringent requirements poses challenges to the existing solid polymeric or ceramic electrolytes. Here, we present an electrolyte-mediated single-Li+ conductive covalent organic framework (COF) that represents a new category of quality solid-state Li+ conductors. In situ solidification of a tailored liquid electrolyte boosts the charge-carrier concentration in the COF channels, decouples Li+ cations from both COF walls and molecular chains, and eliminates defects by crystal soldering. Such an altered micro-environment activates the motion of Li+ ions in a directional manner, which leads to an increase in Li+ conductivity by 100 times with a transference number of 0.85 achieved at room temperature. Moreover, the electrolyte conversion cements the ultrathin COF membrane with fortified mechanical toughness. With the COF membrane, foldable solid-state pouch cells are demonstrated
AB - Solid-state electrolytes with high Li+ conductivity, flexibility, durability, and stability offer an attractive solution to enhance safety and energy density. However, meeting these stringent requirements poses challenges to the existing solid polymeric or ceramic electrolytes. Here, we present an electrolyte-mediated single-Li+ conductive covalent organic framework (COF) that represents a new category of quality solid-state Li+ conductors. In situ solidification of a tailored liquid electrolyte boosts the charge-carrier concentration in the COF channels, decouples Li+ cations from both COF walls and molecular chains, and eliminates defects by crystal soldering. Such an altered micro-environment activates the motion of Li+ ions in a directional manner, which leads to an increase in Li+ conductivity by 100 times with a transference number of 0.85 achieved at room temperature. Moreover, the electrolyte conversion cements the ultrathin COF membrane with fortified mechanical toughness. With the COF membrane, foldable solid-state pouch cells are demonstrated
UR - http://hdl.handle.net/10754/676335
UR - https://onlinelibrary.wiley.com/doi/10.1002/adma.202201410
U2 - 10.1002/adma.202201410
DO - 10.1002/adma.202201410
M3 - Article
C2 - 35332970
SN - 0935-9648
SP - 2201410
JO - Advanced Materials
JF - Advanced Materials
ER -