2017
DOI: 10.1007/s40843-016-9007-2
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Filling and unfilling carbon capsules with transition metal oxide nanoparticles for Li-ion hybrid supercapacitors: towards hundred grade energy density

Abstract: Li-ion hybrid supercapacitors (Li-HECs) facilitate effective combination of the advantages of supercapacitors and Li-ion batteries (LIBs). However, challenges remain in designing and preparing suitable anode and cathode materials, which often require tedious and expensive procedures. Herein, we demonstrated that hollow N-doped carbon capsules (HNC) with and without a Fe3O4 nanoparticle core can respectively function as the anode and the cathode in very-high-performance Li-HECs. The Fe3O4@NC anode exhibited a h… Show more

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Cited by 17 publications
(13 citation statements)
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“…The ever-increasing depletion of fossil fuels has caused severe environmental pollution and other relevant issues, thus the growing demand for clean and sustainable energy is very pressing [1][2][3][4]. It is noted that, the indirect energy sources such as wind energy, solar energy and tidal energy are very promising to meet the requirements of people's daily life, but they are different greatly in geography and even change over time.…”
Section: Introductionmentioning
confidence: 99%
“…The ever-increasing depletion of fossil fuels has caused severe environmental pollution and other relevant issues, thus the growing demand for clean and sustainable energy is very pressing [1][2][3][4]. It is noted that, the indirect energy sources such as wind energy, solar energy and tidal energy are very promising to meet the requirements of people's daily life, but they are different greatly in geography and even change over time.…”
Section: Introductionmentioning
confidence: 99%
“…From Fig. 2a, b, the obvious Dband (disorder band) and G-band (graphite band) can be observed for both LFP/C and LFP·LVP/C [25,26] and the corresponding peak intensity ratios (I G /I D ) are 1.15 and 1.27, respectively. Only some weak peaks of PO 4 3− can be found in two Raman spectra.…”
Section: Resultsmentioning
confidence: 94%
“…Lithium-ion batteries (LIBs) show vast market value in high-end consumer electronics owing to their high energy density, no memory effect as well as environmental benignity [1][2][3][4]. On the basis of the lithium storage mechanism, three kinds of fundamental anode materials were studied: the intercalation/de-intercalation type such as graphite, Li 4 Ti 5 O 12 , TiNb 2 O 7 [5][6][7], the alloy/de-alloy type such as Si-and Sn-based alloys [8][9][10], and the conversion-type such as cobalt metal oxide and other transition metal oxides [11,12]. Among them, the intercalation/de-intercalation type graphite is the most widely employed material as commercial LIBs' anodes.…”
Section: Introductionmentioning
confidence: 99%