Open AccessDopamine-Derived Graphite-Like Hard Carbon Materials for High-Performance Li+ Ions Storage
Author(s) -
Xianfa Rao,
Baobao Li,
Lei Kuang,
Yitao Lou,
Lixia Zhang,
Longhai Weng,
Longxing Chen,
Xuanbo Shi,
Shengwen Zhong,
Bao Liu,
Li Wang
Publication year - 2022
Publication title -
journal of materials science research
Language(s) - English
Resource type - Journals
eISSN - 1927-0593
pISSN - 1927-0585
DOI - 10.5539/jmsr.v11n1p59
Subject(s) - materials science , anode , graphite , carbonization , lithium (medication) , carbon fibers , chemical engineering , inert gas , ion , lithium ion battery , inert , faraday efficiency , battery (electricity) , energy storage , electrode , composite material , composite number , organic chemistry , scanning electron microscope , medicine , power (physics) , chemistry , physics , quantum mechanics , engineering , endocrinology
Graphite anode material is easily powdered under large currents, resulting in a short circuit inside the battery, causing serious safety hazards. Therefore, it is necessary to study a negative electrode material, increase the diffusion channel of lithium ions, increase the layer spacing, reduce the transmission distance, effectively weaken the lithium-ion deposition, and improve the cycle life. A novel organic hard carbon material was prepared by calcining dopamine hydrochloride (DA) at three temperatures. Under the inert atmosphere of 950 °C, the material is fully carbonized, the lattice spacing is 0.367 nm, and it has good lithium-ion transmission activity. After assembling into a battery, after 2000 charge-discharge tests at a high rate of 10C, the charging specific capacity is still 103.3mAh g-1, and the CE remains 101.4%. Dopamine hard carbon anode materials exhibit excellent specific capacity and cycle properties, providing new ideas to support the rapid charging and discharging of hard carbon anode materials.