▎ 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.