Journal
ACS NANO
Volume 4, Issue 6, Pages 3440-3446Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn100400r
Keywords
carbon nanotube; intercalation; lithium ion batteries; specific capacity; stability
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Funding
- Ministry of Education, Science and Technology [R31-2008-000-10092]
- Ministry of Education, Science & Technology (MoST), Republic of Korea [R31-2008-000-10092-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과C6A1908] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We present a novel binder-free multiwall carbon nanotube (MWCNT) structure as an anode in Li ion batteries. The interface-controlled MWCNT structure, synthesized through a two-step process of catalyst deposition and chemical vapor deposition (CVD) and directly grown on a copper current collector, showed very high specific capacity, almost three times as that of graphite, excellent rate capability even at a charging/discharging rate of 3 C, and no capacity degradation up to 50 cycles. Significantly enhanced properties of this anode could be related to high Li ion intercalation on the carbon nanotube walls, strong bonding with the substrate, and excellent conductivity.
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