Thursday, March 20, 2008
Bamboo-like Carbon Nanotubes in Lithium Ion Batteries
CNTs with bamboo-like (B-CNTs) structure has been prepared via a CVD process with novel carbon precursor. The potential application of B-CNTs as electric conductive additive and anode materials for lithium ion batteries was explored.
The test cell with B-CNTs as anode material shows low reversible capacity of 135 mAh g^(-1) and very low initial cycle efficiency of 17.3%, which indicates that so-prepared B-CNTs is not suitable for anode material in lithium ion batteries. However, the EIS spectra prove that B-CNTs is better electric conductive additive than MWCNTs and traditional carbon black (CB). The electric resistance of the electrode is decreased around 20 Ohm when B-CNTs is used instead of CB. The cycle stability is also enhanced, thus B-CNTs is promising electric conductive additive in electrode for lithium ion batteries.
Source: Journal of Power Sources (2008), article in press.
The test cell with B-CNTs as anode material shows low reversible capacity of 135 mAh g^(-1) and very low initial cycle efficiency of 17.3%, which indicates that so-prepared B-CNTs is not suitable for anode material in lithium ion batteries. However, the EIS spectra prove that B-CNTs is better electric conductive additive than MWCNTs and traditional carbon black (CB). The electric resistance of the electrode is decreased around 20 Ohm when B-CNTs is used instead of CB. The cycle stability is also enhanced, thus B-CNTs is promising electric conductive additive in electrode for lithium ion batteries.
Source: Journal of Power Sources (2008), article in press.
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