TY - JOUR
T1 - Solventless Synthesis of Core-Shell LiFePO4/Carbon Composite for Lithium-Ion Battery Cathodes by Direct Pyrolysis of Coronene
AU - Ye, Shujun
AU - Yasukawa, Eiki
AU - Song, Minghui
AU - Nomura, Akihiro
AU - Kumakura, Hiroaki
AU - Kubo, Yoshimi
N1 - Funding Information:
We are grateful to Mr. H. Takigawa and all other members of the High Temperature Superconducting Wire Group at the National Institute for Materials Science (NIMS), as well as to Dr. M. Takeguchi, Mrs. N. Isaka, Y. Nishimiya, K. Nakayashiki, A. Shichiri of the TEM station at NIMS, Miss J. Li, Dr. T. Minowa, and all other staff members at the NIMS Molecule & Material Synthesis Platform for their assistance during this work. The authors also wish to acknowledge the NIMS Battery Research Platform. This work was supported by the Development of Environmental Technology using Nanotechnology program of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), and by a KAKENHI Grant-in-Aid (no. 16H04523) from the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/10/17
Y1 - 2018/10/17
N2 - LiFePO4 (LFP) as a cathode material for lithium-ion batteries (LIBs) requires the application of carbon composite to compensate its poor electrical conductivity. Thus, it is important to develop an efficient and cost-effective carbon composite process. This work demonstrates a new carbon coating (CC) method involving the direct solventless pyrolysis of the polycyclic aromatic hydrocarbon coronene (C24H12) as a means of coating LFP powder. The electrochemical properties of the resulting LIB cathodes were examined to find that the CLFP cathode exhibited a high specific capacity of 154 mAh/g at 0.05 C, which corresponds to 91% of the theoretical capacity of LFP (170 mAh/g), and LIB cells with the CLFP cathode showed rate capabilities and cycling performance comparable to those of commercial LIB cells. Due to the simple CC process and the associated formation mechanism, we anticipate that this method will have practical applications in the large-scale manufacture of LFP for LIB cathodes with low cost.
AB - LiFePO4 (LFP) as a cathode material for lithium-ion batteries (LIBs) requires the application of carbon composite to compensate its poor electrical conductivity. Thus, it is important to develop an efficient and cost-effective carbon composite process. This work demonstrates a new carbon coating (CC) method involving the direct solventless pyrolysis of the polycyclic aromatic hydrocarbon coronene (C24H12) as a means of coating LFP powder. The electrochemical properties of the resulting LIB cathodes were examined to find that the CLFP cathode exhibited a high specific capacity of 154 mAh/g at 0.05 C, which corresponds to 91% of the theoretical capacity of LFP (170 mAh/g), and LIB cells with the CLFP cathode showed rate capabilities and cycling performance comparable to those of commercial LIB cells. Due to the simple CC process and the associated formation mechanism, we anticipate that this method will have practical applications in the large-scale manufacture of LFP for LIB cathodes with low cost.
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U2 - 10.1021/acs.iecr.8b03277
DO - 10.1021/acs.iecr.8b03277
M3 - Article
AN - SCOPUS:85055555830
VL - 57
SP - 13753
EP - 13758
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 41
ER -
