Materials prepared for lithium ion batteries by mechanochemical methods

Ning, Lili; Wu, Yongmin; Fang, Shifeng; Rahm, E.; Holze, Rudolf

doi:10.1016/j.jpowsour.2004.01.048

Cited by 67 publications

(32 citation statements)

References 70 publications

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“…10a. In addition, adsorption of BF 4 − anions from the electrolyte onto preferential sites of the CSF can reduce the spatial homogeneity of the latter [2]. Since this anion adsorption is expected to increase along the direction of anodic potentials, such an effect may also contribute to the observed voltage dependencies of the CPE variables.…”

Section: Correlation Between Energy and Power Densitiesmentioning

confidence: 99%

“…The micro-particles in such a mixture "protect" the nanoparticles from electrolyte induced degradation, while the smaller particles promote fast charge/discharge. Mechanochemical processing via ball-milling of micrometric particles offers a broadly reported effective method to achieving such controlled size distributions of active particles [4]. Mechanical pulverization by ball-milling allows for particle size reduction of commercially obtained or chemically synthesized micro-structured materials.…”

Section: Introductionmentioning

confidence: 99%

“…LMO has an adequate charge capacity and coulombic efficiency, as well as good rate capability and environmental compatibility [7][8][9]. Ball-milling has been shown to further improve several aspects of this material's cathode performance [4,10]. Various structural properties and the main charge-discharge characteristics of ballmilled (BM)-LMO cathodes have been studied by other authors [5,6,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical features of ball-milled lithium manganate spinel for rapid-charge cathodes of lithium ion batteries

Crain

Zheng

Sulyma

et al. 2012

J Solid State Electrochem

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Lithium manganese oxide (LMO), mechanochemically modified by ball-milling, is a potentially useful active material for high-power-density cathodes of lithium ion batteries. The present work investigates the electrochemical characteristic of a cathode prepared from a controlled mixture of nano-and micrometric LMO particles processed in this approach. The nanoparticles in the mixture support surface-localized insertion/extraction of Li and thus increase the cathode charge/discharge rates. The LMO microparticles promote cathode cyclability by stabilizing the coexisting nanoparticles against segregation and strong electrolyte reactions. The underlying mechanisms of these effects are studied here using voltammetry, galvanostatic cycling, Ragone plot construction, and electrochemical impedance spectroscopy. The relative timescales of charge transfer and diffusion of Li + within the LMO lattice are determined, and the criteria for material utilization during rapid charge-discharge are examined.

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Section: Correlation Between Energy and Power Densitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical features of ball-milled lithium manganate spinel for rapid-charge cathodes of lithium ion batteries

Crain

Zheng

Sulyma

et al. 2012

J Solid State Electrochem

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“…The capacity fading after the initial cycling is attributed to volumetric changes that are most severe when the electrodes are fully lithiated, which can lead to a break-up of the surrounding Li/alloy matrix, electronic isolation of the particles, and the consequent trapping of lithium in heavily lithiated Li x Ag particles [21]. The similar behavior was also observed in other Ag and Co based alloy anodes [5,[21][22][23]. In overall, the porous Ag-Co-Ni electrodes with 10 wt.% of Ag seem to be a good candidate and an interesting for high power lithium-ion batteries.…”

Section: Resultsmentioning

confidence: 60%

Silver effect of Co–Ni composite material on energy storage and structural behavior for Li-ion batteries

Gnanamuthu

Prasanna

Subburaj

et al. 2013

Applied Surface Science

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“…In comparison with other methods for the processing of materials, the ball milling technique is advantageous because it is based on simple processes, shows high efficiency, low energy consumption and cost. This technique has been widely applied to prepare hydrogen storage alloys for Ni/MH batteries and the electrode materials for lithium ion batteries [14][15][16][17]. It has been pointed out that the process of ball milling can decrease the particle and crystallite size of materials, and induce the continuous formation of structural defects through the cycling deformation of crystallites.…”

Section: Introductionmentioning

confidence: 99%

Effects of ball milling on the physical and electrochemical characteristics of nickel hydroxide powder

2005

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Nickel hydroxide powder was modified by the method of ball milling, and the physical properties of both the ball-milled and un-milled nickel hydroxide were characterized by scanning electron microscopy, specific surface area, particle size distribution and X-ray diffraction. It was found that the ball milling processing could obviously increase the surface area, decrease the particle and crystallite size, and reduce the crystallinity of b-Ni(OH) 2 , which was advantageous to the improvement of the electrochemical activity of nickel hydroxide powder. Electrochemical performances of pasted nickel electrodes using the ball-milled nickel hydroxide as an active material were investigated, and were compared with those of the electrodes prepared with the un-milled nickel hydroxide. Charge/ discharge tests showed that the ball-milled nickel hydroxide electrodes exhibited better performances in the charging efficiency, specific discharge capacity, active material utilization and discharge voltage. The improvement of the performances of b-Ni(OH) 2 through ball milling could be attributed to the better reaction reversibility, higher coulombic efficiency, higher oxygen evolution potential and lower electrochemical impedance, as indicated by the cyclic voltammetry and electrochemical impedance spectroscopy studies. Thus, ball milling was an effective method to modify the physical properties and enhance the electrochemical performances of nickel hydroxide powder for the active material of rechargeable alkaline nickel batteries.

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Materials prepared for lithium ion batteries by mechanochemical methods

Cited by 67 publications

References 70 publications

Electrochemical features of ball-milled lithium manganate spinel for rapid-charge cathodes of lithium ion batteries

Electrochemical features of ball-milled lithium manganate spinel for rapid-charge cathodes of lithium ion batteries

Silver effect of Co–Ni composite material on energy storage and structural behavior for Li-ion batteries

Effects of ball milling on the physical and electrochemical characteristics of nickel hydroxide powder

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