公开(公告)号：US20230022046A1

公开(公告)日：2023-01-26

申请号：US17853909

申请日：2022-06-29

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Soon Yee LIEW ,  Yu Tat TSE ,  Ou DONG ,  Sing Ho LO ,  Shengbo LU ,  Li FU ,  Chenmin LIU

IPC: H01M4/38 ,  H01M4/62 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/052

Abstract: The present invention provides a lithium metal battery having a lithium metal electrode including a cathode, an anode, a separator positioned between the cathode and the anode, an electrolyte, and a lithium metal negative electrode. The lithium metal negative electrode includes a lithium reactive metal layer, the lithium reactive metal layer being formed on a support conductive layer. A dendrite-suppressing coating is formed over the lithium reactive metal layer; the dendrite-suppressing coating is a displacement-reacted metal including silver reacted from decomposition of a silver salt and having an interface reaction product formed from a reaction between the silver salt and the lithium reactive metal layer. The interface reaction product is positioned between the displacement-reacted metal layer and the lithium reactive metal layer. The dendrite suppressing coating permits lithium metal ions to permeate the coating to react electrolytically in an overall battery reaction.

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.

公开(公告)号：US20220173369A1

公开(公告)日：2022-06-02

申请号：US17530496

申请日：2021-11-19

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Soon Yee LIEW ,  Yong ZHU ,  Yam CHONG ,  Yu Tat TSE ,  Kevin TAN ,  Shengbo LU ,  Li FU ,  Chenmin LIU

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/58 ,  H01M4/139

Abstract: A solventless method of making a dry electrode for an electrochemical cell is provided. A solventless electrode material mixture includes 85-99% electrode active material and from 0-10% conductive carbon additive. A polymer binder system is present from 1-15%. The polymer binder system includes one or more polymer binders. The electrode material mixture is mixed at a temperature greater than a softening point or a melting point of at least one polymer binder of the polymer binder system. The electrode material mixture is kneaded into an electrode material dough. The electrode material dough is formed into an electrode material sheet. At least a portion of the electrode material sheet is affixed to a metal current collector to form an electrode.