2010
DOI: 10.1002/adma.200904285
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Nanostructured Fe3O4/SWNT Electrode: Binder‐Free and High‐Rate Li‐Ion Anode

Abstract: Rechargeable Li-ion batteries are currently being explored for high-power applications such as electric vehicles. However, in order to deploy Li-ion batteries in next-generation vehicles, it is essential to develop electrodes made from durable, nontoxic, and inexpensive materials with a high charge/discharge rate and a high reversible capacity. Transition metal oxides such as Fe

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Cited by 576 publications
(465 citation statements)
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“…[ 24 ] In our previous work we demonstrated that single-walled carbon nanotubes (SWNTs) could be employed as a fl exible net enabling reversible cycling for a high volume expansion materials. [ 25 ] In this work the cathode material does not undergo volume expansion but suffers from poor electrical conductivity and surface over-charge/over-discharge causing capacity fade, especially at high rate. We now demonstrate that the SWNTs can improve both conductivity and also stabilize the surface at an exceptionally high rate of 10C (charge/discharge in 6 min).…”
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confidence: 99%
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“…[ 24 ] In our previous work we demonstrated that single-walled carbon nanotubes (SWNTs) could be employed as a fl exible net enabling reversible cycling for a high volume expansion materials. [ 25 ] In this work the cathode material does not undergo volume expansion but suffers from poor electrical conductivity and surface over-charge/over-discharge causing capacity fade, especially at high rate. We now demonstrate that the SWNTs can improve both conductivity and also stabilize the surface at an exceptionally high rate of 10C (charge/discharge in 6 min).…”
mentioning
confidence: 99%
“…However, the structure can transition to a cubic, spinel-type structure in which the cations are mixed between the two sites, with Li in the transition metal layer and the Ni in the Li layer. [ 5 , 30 ] Figure 3 shows in-situ X-ray diffraction (XRD) patterns of an NMCSWNT electrode during heating and cooling in air between 25 and 525 ° C. The peak at around 26 ° is from trace non-nanotube, graphitic carbon impurities in the SWNTs, which diminishes above 300 ° C upon oxidation. The broad peak around 22 ° that appears above 300 ° C is attributed to crystallization of the well-bundled SWNTs.…”
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“…Specifically, phase conversion reactions have provided a rich playground for lithium-ion battery technologies with potential to improve specific/rate capacity and achieve high resistance to lithium metal plating [14][15][16][17][18][19] . Among the many potential candidates, transition metal oxides have received broad interests as lithium-ion battery anode materials [20][21][22][23][24][25][26][27] . Although electrochemistry and synthesis of transition metal oxides have been well studied 18,19 , the spatially resolved phase conversion pathways (for example, nucleation, charge distribution and anode-electrolyte interface (AEI) formation) remain elusive.…”
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confidence: 99%
“…The large demand for energy storage devices has encouraged studies on rechargeable Li-ions batteries (LIBs). They have been widely used as high power source for several portable electronic devices and electric vehicles [6][7][8] . The research efforts have push up the interest in developing new electrode materials with high capacity and cycling stability for a new generation of lithium ion batteries.…”
Section: Introductionmentioning
confidence: 99%