Journal
NANO ENERGY
Volume 12, Issue -, Pages 69-75Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.12.006
Keywords
Li-ion capacitors; Spinel LiNi(0.5)mn(1.5)O(4); Etectrospun nanofibers; Energy density
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Funding
- Singapore National Research Foundation under its Campus for Research Excellence And Technological Enterprise (CREATE) programme
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We demonstrate a novel Li-ion hybrid electrochemical capacitor (Li-HEC) assembled using 10 nanofibers of a high voltage spinet insertion electrode (LiNi0.5Mn1.5O4) and an activated carbon (AC) counter electrode in an organic electrolyte. A scalable electrospinning technique was employed to produce 10 nanofibers of the high voltage spinet electrode. Structural and morphological features of the nanofibers were studied using various characterization techniques. Performance of spinet and AC electrodes were evaluated in half-cell configurations with metallic Li. A Li-HEC assembly with optimized mass loading delivered a maximum energy density of similar to 19 Wh kg(-1) while retaining 81% of the initial value after 3000 cycles. (C) 2014 Elsevier Ltd. All rights reserved.
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