LiMn2O4-based composites processed by a chemical-route Microstructural, electrical, electrochemical, and mechanical characterization

Lazarraga, M. G.

doi:10.1016/s0378-7753(03)00011-9

Cited by 51 publications

(19 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fracture has also been observed in commercial electrodes that undergo small deformation, such as LiCoO 2 , LiMn 2 O 4 , and LiFePO 4 . 4, [9][10][11][12][13] Lithiation-induced deformation and stress have been studied in recent years. For example, Christensen and Newman 14,15 calculated swelling and stress, Sastry and co-workers 16,17 simulated the stress generation during lithiation under galvanostatic control, Cheng and Verbrugge 18,19 calculated the strain energy under both potentiostatic and galvanostatic operations in spherical particles.…”

Section: Introductionmentioning

confidence: 99%

Fracture of electrodes in lithium-ion batteries caused by fast charging

Zhao

Pharr

Vlassak

et al. 2010

Journal of Applied Physics

365

243

View full text Add to dashboard Cite

During charging or discharging of a lithium-ion battery, lithium is extracted from one electrode and inserted into the other. This extraction-insertion reaction causes the electrodes to deform. An electrode is often composed of small active particles in a matrix. If the battery is charged at a rate faster than lithium can homogenize in an active particle by diffusion, the inhomogeneous distribution of lithium results in stresses that may cause the particle to fracture. The distributions of lithium and stress in a LiCoO 2 particle are calculated. The energy release rates are then calculated for the particle containing preexisting cracks. These calculations predict the critical rate of charging and size of the particle, below which fracture is averted.

show abstract

Section: Introductionmentioning

confidence: 99%

Fracture of electrodes in lithium-ion batteries caused by fast charging

Zhao

Pharr

Vlassak

et al. 2010

Journal of Applied Physics

365

243

View full text Add to dashboard Cite

show abstract

“…Different types of carbon materials have been used as conductive additives, such as graphite [12], carbon black (CB) [13][14][15], carbon nanorods (CNs) [16,17] or graphenes [18,19]. Based on their properties, in terms of surface area, particle size, electrolyte retention capability and intrinsic conductivity, certain, mostly empirical, rules have been developed for the selection of conductive additives [20].…”

Section: Introductionmentioning

confidence: 99%

Understanding the influence of conductive carbon additives surface area on the rate performance of LiFePO4 cathodes for lithium ion batteries

Qi¹,

Blizanac

DuPasquier

et al. 2013

Carbon

View full text Add to dashboard Cite

“…[26] Then egative electrode was prepared by dispersing LTOa sa n active material (76 wt %) with MMM Super Pc arbon black (18 wt %) and PVdF (distributed by Fluka, 6% wt %) in N-methylpyrrolidone as as olvent purchased from Aldrich. [26] Them ix- ture was stirred on am agnetic stirrer for 2h,a nd then the solvent was evaporated on ah ot plate at 90 8Cf or 30 min. Later both positive and negative composites were kept in as tove at 80 8Covernight.…”

Section: Discussionmentioning

confidence: 99%

High‐performance Li‐ion Battery based on Cr‐Substituted Lithium Manganite and Lithium Titanate Spinels: Influence of Mass Balance on its Electrochemistry

et al. 2016

View full text Add to dashboard Cite

The influence of mass balance in the LiCr0.2Ni0.4Mn1.4O4//Li4Ti5O12 (LCrNMO//LTO) full cell on its electrochemical performance at different rates is described. The effect of the variation of the molar fraction of LTO to LCrNMO (χ) at different rates is described in detail. The full cell showed a reversible working potential at about 3 V. For every rate tested, the discharge capacity, normalized to total mass of both electrode materials (Qdch), reached a maximum value approximately at the stoichiometric value of χ=1. When χ<1, Qdch is limited by an incomplete electrochemical reaction of the LCrNMO cathode and when χ>1 Qdch decreases due to the increase in the total weight of active electrode materials. When the discharge rates were increased to ≥1 C (1 C=147.5 mA g−1 or 0.260 mA cm−2), the maximum Qdch delivered by the full cell was shifted slightly beyond the stoichiometry (χ=1.1). Furthermore, the LCrNMO//LTO full cell exhibited an outstanding ultralong cycling behavior: with a capacity retention of 93 % after 1000 cycles. Its cyclability is as high as 99.994 %. The LiCrNMO//LTO full cell is a promising lithium‐ion battery for practical applications, especially for plug‐in hybrid electric vehicles, for which a long cycle life and reasonable power are required. However, it is demonstrated that the optimization of anode to cathode materials is one of the most important parameters to take into account to achieve high energy and power densities.

show abstract

LiMn2O4-based composites processed by a chemical-route Microstructural, electrical, electrochemical, and mechanical characterization

Cited by 51 publications

References 32 publications

Fracture of electrodes in lithium-ion batteries caused by fast charging

Fracture of electrodes in lithium-ion batteries caused by fast charging

Understanding the influence of conductive carbon additives surface area on the rate performance of LiFePO4 cathodes for lithium ion batteries

High‐performance Li‐ion Battery based on Cr‐Substituted Lithium Manganite and Lithium Titanate Spinels: Influence of Mass Balance on its Electrochemistry

Contact Info

Product

Resources

About