Constrained electrode assembly

• Main Authors: Ramasubramanian, Murali, Contreras, Richard J, Van Erden, Lynn, Dales, Gardner Cameron, Lahiri, Ashok, Valdes, Bruno A, Matsubayashi, Ken S, Rust, III, Harrold J, Howard, Jason Newton, Wilcox, James D, Shah, Nirav S, Dalton, Jeremie J, Varni, John F, Rosen, Robert Keith, Lee, Kim Han, Busacca, Robert S, Ho, Geoffrey Matthew, Spindt, Christopher J
• Format: Patent
• Language: English
• Published: 07.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length LE of the electrode active material layer, traces a first vertical end surface plot, EVP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length LC of the counter-electrode active material layer, traces a first vertical end surface plot, CEVP1, wherein for at least 60% of the length Lc of the first counter-electrode active material layer (i) the absolute value of a separation distance, SZ1, between the plots EVP1 and CEVP1 measured in the vertical direction is 1000 μm≥|SZ1|≥5 μm.