Journal
FUEL PROCESSING TECHNOLOGY
Volume 213, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2020.106714
Keywords
Lithium-ion batteries; Biochar-CNT-NiO composite; Nickel oxide; Carbon nanotubes
Funding
- National Natural Science Foundation of China [22078141, 21676132, 21476100]
- Post-Doctoral Foundation Project of Shenzhen Polytechnic [6020330007K]
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The biochar-CNT-NiO composite material shows promising applications as an anode material in lithium-ion batteries, with higher reversible capacity and excellent discharge rate performance. The presence of CNTs helps mitigate the volume change of NiO during cycles and accelerates electron transfer.
We report the synthesis of biochar-CNT-NiO composite and its application as anode material in lithium-ion batteries (LIBs). The scanning electron microscope (SEM) analysis results displayed that the NiO particles were exposed on the surface of CNTs. HRTEM results showed a more uniform distribution of NiO particles on the biochar-CNT-NiO compared to that of biochar-NiO. The electrochemical performance of the biochar-CNT-NiO indicated that composite nanostructure was able to deliver an excellent reversible capacity for LIB. The capacity of biochar-CNT-NiO (674.6 mAh/g) was significantly higher than biochar-NiO without CNTs (368.4 mAh/g) and Char-CNT-Ni (140.9 mAh/g) after 100 cycles. The biochar-CNT-NiO composite exhibited a remarkable discharge rate performance. This outstanding performance was caused by the presence of CNTs on the biochar-CNT-NiO, which mitigates the volume change of NiO during cycles and speeded up electron transfer.
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