Active metal battery with composite layer for controlling dendritic growth

• Main Authors: SON YONG-KYU, THIRUVANNAMALAI ARUMUGAM
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A composite layer for controlling dendritic growth in an electrochemical cell having an active metal anode that is susceptible to dendritic growth during cycling. In some embodiments, one of the composite layers includes a porous matrix having pores, solid electrolyte particles, and one or more alloying materials that are alloyed with the active metal such that each dendrite contacting the alloying material is alloyed therewith to prevent the dendrites from growing beyond the composite layer. In some embodiments, another of the composite layers includes a gel electrolyte and solid electrolyte particles dispersed in the gel electrolyte. Each of these two types of composite layers may be disposed separately from each other or together with each other in the electrochemical cell, the gel-electrolyte composite layer is typically disposed in contact with the active metal anode, and the porous composite layer is typically disposed between the active metal anode and the separator. 一种用于控制电化学电池中枝晶生长的复合材料层，所述电化学电池具有在循环