• 专利标题:   Producing coated nano-ordered carbon particles used in anode within rechargeable battery including sodium-ion batteries and other metal-ion batteries, involve exposing carbon-containing material to expanding agent to produce expanded carbonaceous particles during expanding process.
  • 专利号:   US2023052554-A1, WO2023018549-A1
  • 发明人:   ENTERKIN J A, WORFOLK B J, ZHANG L
  • 专利权人:   PHILLIPS 66 CO, PHILLIPS 66 CO
  • 国际专利分类:   C01B032/15, C23C016/26, H01M010/0525, H01M004/583, C09C001/44, H01G011/32
  • 专利详细信息:   US2023052554-A1 16 Feb 2023 C01B-032/15 202318 English
  • 申请详细信息:   US2023052554-A1 US873562 26 Jul 2022
  • 优先权号:   US230868P, US304811P, US304978P, US873562

▎ 摘  要

NOVELTY - Producing coated nano-ordered carbon particles involve exposing a carbon-containing material to an expanding agent to produce expanded carbonaceous particles during an expanding process, heating the expanded carbonaceous particles during an annealing process and depositing a carbon film on the expanded carbonaceous particles with nano-ordered structure to produce coated nano-ordered carbon particles during a carbon coating process. USE - Method for producing coated nano-ordered carbon particles used in anode (claimed) within a rechargeable battery including sodium-ion batteries and other metal-ion batteries. ADVANTAGE - The method enables produce nano-ordered carbon particles with improved specific capacity (e.g., greater than 350 mAh/g) and first cycle efficiency (FCE) and hence capable of increasing the achievable energy density of the battery, such as a sodium-ion battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a composition of coated nano-ordered carbon particles, which comprise a specific capacity of greater than 400 mAh/g in a battery voltage of about 0 V to about 3 V, a first cycle efficiency of greater than 88%, and each coated nano-ordered carbon particle comprises a carbon film disposed over an expanded carbonaceous particle, where the expanded carbonaceous particles have an average particle size of about 1 μm to about 50 μm and the carbon film has a thickness of about 1 nm to about 5 μm, and 2. an anode, which comprises the coated nano-ordered carbon particles.