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Emulsion-templated ...
Emulsion-templated bicontinuous carbon network electrodes for use in 3D microstructured batteries
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- Asfaw, Habtom Desta (author)
- Uppsala universitet,Strukturkemi
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- Roberts, Matthew R. (author)
- Uppsala universitet,Strukturkemi,St. Andrews
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- Younesi, Reza (author)
- Uppsala universitet,Strukturkemi,DTU
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- Edström, Kristina (author)
- Uppsala universitet,Strukturkemi
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(creator_code:org_t)
- United Kingdom, 2013
- 2013
- English.
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In: Journal of Materials Chemistry. - United Kingdom. - 0959-9428 .- 1364-5501. ; 1:44, s. 13750-13758
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- High surface area carbon foams were prepared and characterized for use in 3D structured batteries. Twopotential applications exist for these foams: firstly as an anode and secondly as a current collector supportfor electrode materials. The preparation of the carbon foams by pyrolysis of a high internal phase emulsionpolymer (polyHIPE) resulted in structures with cage sizes of 25 mm and a surface area enhancement pergeometric area of approximately 90 times, close to the optimal configuration for a 3D microstructuredbattery support. The structure was probed using XPS, SEM, BET, XRD and Raman techniques; revealingthat the foams were composed of a disordered carbon with a pore size in the <100 nm range resultingin a BET measured surface area of 433 m2 g-1. A reversible capacity exceeding 3.5 mA h cm2 at acurrent density of 0.37 mA cm-2 was achieved. SEM images of the foams after 50 cycles showed thatthe structure suffered no degradation. Furthermore, the foams were tested as a current collector bydepositing a layer of polyaniline cathode over their surface. High footprint area capacities of500 mA h cm-2 were seen in the voltage range 3.8 to 2.5 V vs. Li and a reasonable rate performancewas observed.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Carbon foam
- High internal phase emulsion polymer
- microbattery
- 3D microbattery
- Lithium ion
- Materialvetenskap
- Materials Science
- Chemistry
- Kemi
- Materialvetenskap
- Materials Science
- Fysikalisk kemi
- Physical Chemistry
Publication and Content Type
- ref (subject category)
- art (subject category)
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