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Enhanced lithium storage in ZnFe2O4-C nanocomposite produced by a low-energy ball milling
journal contribution
posted on 2015-05-15, 00:00 authored by R M Thankachan, Md Mokhlesur RahmanMd Mokhlesur Rahman, Irin Sultana, Alexey Glushenkov, S Thomas, N Kalarikkal, Ying (Ian) ChenYing (Ian) ChenPreparation of novel nanocomposite structure of ZnFe2O4-C is achieved by combining a sol-gel and a low energy ball milling method. The crucial feature of the composite's structure is that sol-gel synthesised ZnFe2O4 nanoparticles are dispersed and attached uniformly along the chains of Super P Li™ carbon black matrix by adopting a low energy ball milling. The composite ZnFe2O4-C electrodes are capable of delivering a very stable reversible capacity of 681 mAh g-1 (96% retention of the calculated theoretical capacity of ∼710 mAh g-1) at 0.1 C after 100 cycles with a remarkable Coulombic efficiency (82%) improvement in the first cycle. The rate capability of the composite is significantly improved and obtained capacity was as high as 702 at 0.1, 648 at 0.5, 582 at 1, 547 at 2 and 469 mAh g-1 at 4 C (2.85 A g-1), respectively. When cell is returned to 0.1 C, the capacity recovery was still ∼98%. Overall, the electrochemical performance (in terms of cycling stability, high rate capability, and capacity retention) is outstanding and much better than those of the related reported works. Therefore, our smart electrode design enables ZnFe2O4-C sample to be a high quality anode material for lithium-ion batteries.
History
Journal
Journal of power sourcesVolume
282Pagination
462 - 470Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0378-7753Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, ElsevierUsage metrics
Categories
No categories selectedKeywords
Lithium-ion batteriesLow energy ball millingSol-gel synthesisSuper P Li™ carbon black hostZnFe2O4-C nanocomposite anodeScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalElectrochemistryEnergy & FuelsMaterials Science, MultidisciplinaryChemistryMaterials ScienceSuper P Li (TM) carbon black hostPERFORMANCE ANODE MATERIALHIGH-CAPACITYION BATTERIESCOMPOSITEGRAPHITENANOPARTICLESCOFE2O4
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