Hollow Carbon Nanospheres with Extremely Small Size as Anode Material in Lithium-Ion Batteries with Outstanding Cycling Stability
Source abstract
Abstract
Hollow carbon nanospheres (HCNSs) were fabricated by annealing the Cu–C core–shell nanoparticles at 1250 °C in vacuum. The as-obtained HCNSs have ultrathin shell of 1–3 nm in thickness, small size of about 20 nm in diameter, high surface area of 300 m 2 g –1, and ultrasmall pores below 5 nm within the C shells. The HCNSs exhibit excellent electrochemical performance as anode materials for lithium-ion batteries. A reversible capacity of 400 mAh g –1 and capacity retention of nearly 100% are achieved at the current density of 186 mA g –1 after 100 charging–discharging cycles. The high reversible capacity, improved high-rate capability, and outstanding cycling stability could be attributed to their unique structural characteristics including the extremely small diameter, the high surface area and the hollow structure with porous, ultrathin shell.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Graphene research and applications · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Electronics, Central South University, Changsha 410083, China
School of Mechanical and Mining Engineering, The University of Queensland, QLD 4072, Australia
School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
School of Physics and Information Science, Hunan Normal University, Changsha 410081, China
College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410075, China
Funding
Central South University · Australian Research Council · National Natural Science Foundation of China
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