TY  - JOUR
AU  - LI, Fangyu
AU  - TAO, Huachao
AU  - LIU, Xinyu
AU  - YANG, Xuelin
PY  - 2022
TI  - Pyrolyzed Hydrogenated Anthracite as Anode Materials for Sodium-ion Batteries
JO  - Journal of the Chinese Ceramic Society
SN  - 0454-5648
SP  - 1890
EP  - 1898
VL  - 50
IS  - 7
AB  - Anthracite has a great application potential in energy storage because of its low cost, but the reversible capacity of raw anthracite as an anode material for the sodium-ion battery is rather low. In this paper, anthracite was pyrolyzed at different temperatures. The results show that the reversible capacity of anthracite pyrolyzed at 1300 ℃ (A-1300) is 307 mA·h/g at 20 mA/g, which is the maximum value among the pyrolyzed anthracites. However, the reversible capacity of A-1300 at 500 mA/g is only 105 mA·h/g, exhibiting an inferior rate performance. The two-step strategy via hydrogenation and pyrolysis can decrease the pyrolyzed temperature and improve the rate performance. Hydrogenated anthracite turns into an easy-graphitized precursor. The reversible capacity of hydrogenated anthracite pyrolyzed at 900 ℃ (H300-3-900) can retain 113 mA·h/g at 500 mA/g after 500 cycles, exhibiting a superior rate performance and an easier commercial production at a lower temperature.
UR  - https://doi.org/10.14062/j.issn.0454-5648.20210898
DO  - 10.14062/j.issn.0454-5648.20210898