Electrode assembly and secondary battery

• Main Authors: WILCOX, JAMES D, RAMASUBRAMANIAN, MURALI, VARNI, JOHN F, LEE, KIM HAN, HOWARD, JASON NEWTON, SINGH, NEELAM, BUCK, JEFFREY GLENN, SARSWAT, NEAL, ARMSTRONG, MICHAEL J, RUST, HARROLD J. III, BUSACCA, ROBERT S, VAN ERDEN, LYNN, WINANS, JOSHUA DAVID, HO, GEOFFREY MATTHEW, CONTRERAS, RICHARD J, DALTON, JEREMIE J, CARDOZO, BENJAMIN L, DOAN, JONATHAN C, SHAH, NIRAV S, CALCATERRA, ANTHONY, SPINDT, CHRISTOPHER J, VALDES, BRUNO A, FORTUNATI, KIM LESTER, SCHUERLEIN, THOMAS JOHN, DALES, GARDNER CAMERON, LAHIRI, ASHOK, MATSUBAYASHI, KEN S, ROSEN, ROBERT KEITH
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Secondary batteries and methods of manufacture thereof are provided. A secondary battery can comprise an offset between electrode and counter-electrode layers in a unit cell. Secondary batteries can be prepared by removing a population of negative electrode subunits from a negative electrode sheet, the negative electrode sheet comprising a negative electrode sheet edge margin and at least one negative electrode sheet weakened region that is internal to the negative electrode sheet edge margin, removing a population of separator layer subunits from a separator sheet, and removing a population of positive electrode subunits from a positive electrode sheet, the positive electrode sheet comprising a positive electrode edge margin and at least one positive electrode sheet weakened region that is internal to the positive electrode sheet edge margin, and stacking members of the negative electrode subunit population, the separator layer subunit population and the positive electrode subunit population.