Electrochemical performance of α-Fe2O3 nanorods as anode material for lithium-ion cells

Líu, Hao; Wang, Guoxiu; Park, Jinsoo; Wang, Jiazhao; Liu, Huan; Zhang, Chaofeng

doi:10.1016/j.electacta.2008.09.071

Cited by 232 publications

(122 citation statements)

References 25 publications

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“…For example, Lui et al used hydrothermally synthesized a-Fe 2 O 3 nanorods in a conventional slurry to dramatically increase capacity, from 112 to 763 mAh g À1 after 30 cycles, compared to that of commercially available material. [12] In addition, Beattie et al maintained close to silicon's theoretical capacity (4200 mAh g À1 ) for 20 cycles…”

Section: Introductionmentioning

confidence: 92%

Conformal Surface Coatings to Enable High Volume Expansion Li‐Ion Anode Materials

et al. 2010

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An alumina surface coating is demonstrated to improve electrochemical performance of MoO(3) nanoparticles as high capacity/high-volume expansion anodes for Li-ion batteries. Thin, conformal surface coatings were grown using atomic layer deposition (ALD) that relies on self-limiting surface reactions. ALD coatings were tested on both individual nanoparticles and prefabricated electrodes containing conductive additive and binder. The coated and non-coated materials were characterized using transmission electron microscopy, energy-dispersive X-ray spectroscopy, electrochemical impedance spectroscopy, and galvanostatic charge/discharge cycling. Importantly, increased stability and capacity retention was only observed when the fully fabricated electrode was coated. The alumina layer both improves the adhesion of the entire electrode, during volume expansion/contraction and protects the nanoparticle surfaces. Coating the entire electrode also allows for an important carbothermal reduction process that occurs during electrode pre-heat treatment. ALD is thus demonstrated as a novel and necessary method that may be employed to coat the tortuous network of a battery electrode.

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Section: Introductionmentioning

confidence: 92%

Conformal Surface Coatings to Enable High Volume Expansion Li‐Ion Anode Materials

et al. 2010

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“…[ 52 ] The very large capacities associated with the conversion of Fe 2 O 3 (1007 mAh g − 1 , Figure 2 ), coupled with its low toxicity and cost, certainly make it an attractive candidate. As a result, many papers can be found today in which the electrochemical activity is evaluated for samples prepared by numerous synthetic methods, both in powder [56][57][58][59][60][61][62][63][64] and fi lm [ 65 , 66 ] form, and using liquid and solid [ 67 ] electrolyte setups. The very large capacities (above 900 mAh g − 1 ) sustained for even up to 50-100 cycles that have been reported to date by several groups [ 58,59 , 61 ] hold the promise of the applicability of this compound.…”

Section: Ironmentioning

confidence: 99%

Beyond Intercalation‐Based Li‐Ion Batteries: The State of the Art and Challenges of Electrode Materials Reacting Through Conversion Reactions

et al. 2010

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Despite the imminent commercial introduction of Li-ion batteries in electric drive vehicles and their proposed use as enablers of smart grids based on renewable energy technologies, an intensive quest for new electrode materials that bring about improvements in energy density, cycle life, cost, and safety is still underway. This Progress Report highlights the recent developments and the future prospects of the use of phases that react through conversion reactions as both positive and negative electrode materials in Li-ion batteries. By moving beyond classical intercalation reactions, a variety of low cost compounds with gravimetric specific capacities that are two-to-five times larger than those attained with currently used materials, such as graphite and LiCoO(2), can be achieved. Nonetheless, several factors currently handicap the applicability of electrode materials entailing conversion reactions. These factors, together with the scientific breakthroughs that are necessary to fully assess the practicality of this concept, are reviewed in this report.

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“…Among them, iron oxides (Fe 3 O 4 /Fe 2 O 3 ) with a high theoretical capacity (922/1005 mAh g À1 ) are advantageous due to their low cost, eco-friendliness, and natural abundance [7][8][9][10][11]. However, iron oxides still face with a problem of rapid capacity fading due to a large volume expansion ($196%) and a subsequent break-down of particles during cycling [12].…”

Section: Introductionmentioning

confidence: 99%

Employment of Chitosan–linked Iron Oxides as Mesoporous Anode Materials for Improved Lithium–ion Batteries

Kim

Lee

et al. 2015

Electrochimica Acta

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Electrochemical performance of α-Fe2O3 nanorods as anode material for lithium-ion cells

Cited by 232 publications

References 25 publications

Conformal Surface Coatings to Enable High Volume Expansion Li‐Ion Anode Materials

Conformal Surface Coatings to Enable High Volume Expansion Li‐Ion Anode Materials

Beyond Intercalation‐Based Li‐Ion Batteries: The State of the Art and Challenges of Electrode Materials Reacting Through Conversion Reactions

Employment of Chitosan–linked Iron Oxides as Mesoporous Anode Materials for Improved Lithium–ion Batteries

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