TY - JOUR
T1 - Ionic liquid derived Co 3 O 4 /Nitrogen doped carbon composite as anode of lithium ion batteries with enhanced rate performance and cycle stability
AU - Xiao, Mingjun
AU - Meng, Yanshuang
AU - Duan, Chaoyu
AU - Zhu, Fuliang
AU - Zhang, Yue
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Co 3 O 4 /Nitrogen doped carbon (Co 3 O 4 /NDC) composite is successfully prepared using 1-butyl-3-methylimidazolium dicyanamide ([BMIm]N(CN) 2 ) as carbon and nitrogen sources. The properties of Co 3 O 4 /NDC composite and bare Co 3 O 4 are systematically characterized by X-ray diffraction, Raman spectrum, transmission electron microscopy (TEM), and scanning electron microscopy. TEM result indicates that the Co 3 O 4 particles are coated with a layer of nitrogen doped carbon film, with can enhance its conductivity and alleviate the volume effect. The results of electrochemical tests show that the discharge specific capacity of Co 3 O 4 /NDC composite is 1088 mAh g −1 of 0.1 C (1 C = 890 mA g −1 ) after 100 cycles. Compared to Co 3 O 4 /NDC composite, the discharge specific capacity of bare Co 3 O 4 is 628 mAh g −1 of 0.1 C after 100 cycles. The enhanced electeochemical properties can be attributed to the nitrogen doped carbon film that prevents the structure from being destroyed during lithium ion (Li + ) insertion/deinsertion process and improves the conductivity.
AB - Co 3 O 4 /Nitrogen doped carbon (Co 3 O 4 /NDC) composite is successfully prepared using 1-butyl-3-methylimidazolium dicyanamide ([BMIm]N(CN) 2 ) as carbon and nitrogen sources. The properties of Co 3 O 4 /NDC composite and bare Co 3 O 4 are systematically characterized by X-ray diffraction, Raman spectrum, transmission electron microscopy (TEM), and scanning electron microscopy. TEM result indicates that the Co 3 O 4 particles are coated with a layer of nitrogen doped carbon film, with can enhance its conductivity and alleviate the volume effect. The results of electrochemical tests show that the discharge specific capacity of Co 3 O 4 /NDC composite is 1088 mAh g −1 of 0.1 C (1 C = 890 mA g −1 ) after 100 cycles. Compared to Co 3 O 4 /NDC composite, the discharge specific capacity of bare Co 3 O 4 is 628 mAh g −1 of 0.1 C after 100 cycles. The enhanced electeochemical properties can be attributed to the nitrogen doped carbon film that prevents the structure from being destroyed during lithium ion (Li + ) insertion/deinsertion process and improves the conductivity.
UR - http://www.scopus.com/inward/record.url?scp=85061916906&partnerID=8YFLogxK
U2 - 10.1007/s10854-019-00916-x
DO - 10.1007/s10854-019-00916-x
M3 - Article
AN - SCOPUS:85061916906
SN - 0957-4522
VL - 30
SP - 6148
EP - 6156
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 6
ER -
