公开(公告)号：US20240322247A1

公开(公告)日：2024-09-26

申请号：US18616209

申请日：2024-03-26

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Yan Lung WONG ,  Shengbo LU ,  Chenmin LIU

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/0025

Abstract: Abstract:
A secondary electrochemical device, includes a high-voltage positive electrode, a negative electrode such as a lithium metal electrode, and an optional separator. A non-aqueous liquid electrolyte includes at least one metal-organic polyhedral (MOP) additive in an amount at least 0.1 weight percent. Typically, an upper limit of the additive is approximately 4 weight percent. The MOP additive has a discrete porous nanocage structure including plural metal clusters with organic ligands forming an accessible cavity with open metal sites and organic functionalities configured to trap water, anions, and transition metal species from the non-aqueous liquid electrolyte. The MOP is further configured to facilitate lithium-ion transport, scavenge free radicals, and stabilize electrode-electrolyte interphases.

公开(公告)号：US20240304860A1

公开(公告)日：2024-09-12

申请号：US18595466

申请日：2024-03-05

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Soon Yee LIEW ,  Ho Mei LAW ,  Fei ZHANG ,  Yu Tat TSE ,  Shengbo LU ,  Li FU ,  Yong ZHU ,  Chenmin LIU ,  Yan Lung WONG

IPC: H01M10/0565 ,  H01M4/66

CPC classification number: H01M10/0565 ,  H01M4/661 ,  H01M2300/0082

Abstract: A quasi-solid-state battery formed from non-gas evolving in-situ curing of a quasi-solid-state electrolyte that includes a high swelling polymer made from a monomer with good compatibility with liquid electrolytes, and has a good reactivity for facile non-gas evolving in-situ polymerization. The monomer can be based on acrylate polymerization chemistry or an allyl group polymerization chemistry. Non-gas evolving initiators are used for non-gas evolving in-situ polymerization of acrylate or allyl monomer-based QSE. The resulting QSE additionally has high ionic conductivity, allowing for a high battery output, and a wide electrochemical window (stable for lithium metal anode and high-voltage cathodes). The resulting quasi solid electrolyte battery is not only easy to fabricate using conventional battery manufacturing practices, the non-gas evolving in-situ polymerization causes the QSE to be uniformly distributed within the battery, ensuring high-quality, safe battery performance and longevity.