▎ 摘 要
NOVELTY - Making electrode by solventless process involves providing a solventless electrode material mixture comprising 85-99 wt.% electrode active material, 0-10 wt.% conductive carbon additive, and 1-15 wt.% polymer binder system including polymer binder, mixing the electrode material mixture at a temperature greater than a softening point or a melting point of at least one polymer binder of the polymer binder system, kneading the electrode material mixture into an electrode material dough, forming the electrode material dough to obtain an electrode material sheet, and applying a portion of the electrode material sheet to a metal current collector to obtain an electrode. USE - Method for making electrode by solventless process for use in electrochemical cell, and preparing dry electrode layer for lithium-ion battery (all claimed). ADVANTAGE - The method can promote a greener supply chain for energy storage devices such as lithium ion battery, much easier to deploy at the industrial scale for battery manufacturer, and cost-effective. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a fabricated positive electrode using method of electrode by solventless process, which has: a capacity loading greater than 5 milliampere hour/cm2 when discharged using 2C current, the electrode retaining greater than 75% the capacity of the electrode when discharged using a 0.2C current, and retaining greater than 80% of its original capacity after 300 cycles; and 2. a method of preparing a dry electrode layer for a lithium-ion battery, which comprises: (a) providing a solventless electrode precursor dough to a roller apparatus including electrode active material particles and a binder system including at least one binder, the dough being heated to or maintaining at a temperature above the melting point of at least one binder of the binder system; (b) rolling the solventless electrode precursor dough in the roller apparatus, the roller apparatus including a roller and having at least two-axis motion and positioning, including a horizontal axis and a vertical axis; (c) reducing a thickness of the solventless electrode precursor dough through rolling to create an active material layer; and (d) combining the active material layer with a current collector to create the dry electrode for a lithium-ion battery. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of an apparatus for performing solventless electrode fabrication process. Roller (19) cylinder rail (20) Bearing (21) Spring (22) Substrate (23)