2011
DOI: 10.1021/nl1030198
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Abstract: To deploy Li-ion batteries in next-generation vehicles, it is essential to develop electrodes with durability, high energy density, and high power. Here we report a breakthrough in controlled full-electrode nanoscale coatings that enables nanosized materials to cycle with durable high energy and remarkable rate performance. The nanoparticle electrodes are coated with Al(2)O(3) using atomic layer deposition (ALD). The coated nano-LiCoO(2) electrodes with 2 ALD cycles deliver a discharge capacity of 133 mAh/g wi… Show more

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Cited by 357 publications
(291 citation statements)
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References 29 publications
(52 reference statements)
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“…Both passivating layers were deposited by an ALD process using Al(CH3)3 and Ti(OCH(CH3)2)4 as Al2O3 and TiO2 precursors, respectively. Evaluation of the electrochemical performance over a range of layer thicknesses, also tailored by adjusting the number of consecutive ALD cycles, returned similar findings to the previous report [262]. Substantially increasing layer thickness (up to 500 ALD cycles), resulted in lower capacity and poor retention, even compared to bare LiCoO2 particles, while the highest capacity and most stable cycling was seen in samples with the thinnest layers of Al2O3 (10 ALD cycles).…”
Section: Licoo2supporting
confidence: 84%
See 1 more Smart Citation
“…Both passivating layers were deposited by an ALD process using Al(CH3)3 and Ti(OCH(CH3)2)4 as Al2O3 and TiO2 precursors, respectively. Evaluation of the electrochemical performance over a range of layer thicknesses, also tailored by adjusting the number of consecutive ALD cycles, returned similar findings to the previous report [262]. Substantially increasing layer thickness (up to 500 ALD cycles), resulted in lower capacity and poor retention, even compared to bare LiCoO2 particles, while the highest capacity and most stable cycling was seen in samples with the thinnest layers of Al2O3 (10 ALD cycles).…”
Section: Licoo2supporting
confidence: 84%
“…Limiting the occurrence of potentially poisonous interactions is therefore highly advantageous to the cycle life of the electrode. Recent studies have demonstrated nanometre-scale coatings of inactive Al2O3 on LiCoO2 nanoparticles [256,262,263]. In the first example, LiCoO2 particles prepared by a molten-salt synthesis using CoO, LiOH and KNO3, were subjected to consecutive ALD cycles, each depositing a thin-film of Al2O3 ranging between 1.1-2.2 Å in thickness.…”
Section: Licoo2mentioning
confidence: 99%
“…However, if ALD Al 2 O 3 was first deposited on LiCoO 2 powder and then applied into an electrode, the electron conduction paths would be blocked thus the capacity would decrease rapidly. Scott et al reported that the LIB performance of nano LiCoO 2 powder‐based electrode could be significantly improved by ALD Al 2 O 3 surface coating 22. As shown in Figure 3 a–b, 6 cycles of ALD Al 2 O 3 with thickness of ≈1–2 nm gives rise to a uniform coverage on LiCoO 2 powder particles.…”
Section: Utilizing Ald For Advanced Electrode Materialsmentioning
confidence: 95%
“…31 ALD has also been used to deposit zirconium dioxide on lithium titanate anode material to improve its electrochemical performance, resulting in higher specific capacity, better cycling and rate performance. 32 Lithiumion-conducting solids, such as lithium aluminate (LiAlO 2 ), have also been coated on the surface of lithium nickel cobalt aluminum or graphite materials by ALD.…”
Section: Ultrathin Conformal Coatingmentioning
confidence: 99%