Sunrise New Energy announces NIPO approval for invention patent

Sunrise New Energy announced that its subsidiary, Sunrise New Energy Materials, has received preliminary approval from the National Intellectual Property Office for its invention patent titled “Fiber-Structured Titanium-Doped Amorphous Carbon Coated Silver Hard Carbon Composite Material and the Preparation Method.” The official document number is 2023121501155630. This invention pertains to the field of sodium-ion battery material preparation and introduces a fiber-structured titanium-doped amorphous carbon coated silver hard carbon composite material and its preparation method. Hard carbon, as the main material for the anode of sodium-ion batteries, has become the preferred material due to its wide availability, low cost, and simple preparation process. However, it has limitations such as low specific capacity, low initial efficiency, and deviation in power performance. This invention overcomes the aforementioned drawbacks. The hard carbon composite material of this invention exhibits a core-shell structure, with the inner core composed of silver-doped hard carbon material and the outer shell composed of titanium-doped amorphous carbon. This design enhances the initial efficiency, cycling performance, and rate capability of the anode materials.