公开(公告)号：US11881602B1

公开(公告)日：2024-01-23

申请号：US17356845

申请日：2021-06-24

申请人： CCL LABEL, INC.

发明人： Jesse Smithyman ,  Konstantin Tikhonov ,  Christine Ho ,  Chaojun Shi ,  Ehsan Faegh

IPC分类号： H01M8/04291

CPC分类号： H01M8/04291

摘要： Provided are electrochemical cells, comprising water-retaining components, and methods of fabricating such electrochemical cells. A water-retaining component is configured to deliver water to the positive active material during the operation of the electrochemical cell. The water-retaining component may be a part of the positive active material layer, a part of the electrolyte layer, and/or a standalone component. In some examples, the water-retaining component comprises one or more crystal hydrates (e.g., MgSO4, MgCl2, Na2SO4, Na2HPO4, CuSO4, CaCl2, KAl(SO4)2, and Mg(NO3)2), one or more water-retaining polymers (e.g., sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate, and a cellulose derivative), one or more inorganic compounds (e.g., fumed silica, precipitated silica). In some examples, a method of forming an electrochemical cell comprises printing a positive active material layer, a negative active material layer, and an electrolyte layer, e.g., printing the electrolyte layer directly over the positive active material layer or the negative active material layer.