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High-Throughput Pro...
High-Throughput Processing of Nanographite-Nanocellulose-Based Electrodes for Flexible Energy Devices
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- Koppolu, Rajesh (författare)
- Abo Akad Univ, Lab Nat Mat Technol, Turku 20500, Finland.
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- Blomquist, Nicklas, 1987- (författare)
- Mittuniversitetet,Institutionen för naturvetenskap
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- Dahlström, Christina, 1977- (författare)
- Mittuniversitetet,Institutionen för kemiteknik
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- Toivakka, Martti (författare)
- Abo Akad Univ, Lab Nat Mat Technol, Turku 20500, Finland.
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Abo Akad Univ, Lab Nat Mat Technol, Turku 20500, Finland Institutionen för naturvetenskap (creator_code:org_t)
- 2020-05-27
- 2020
- Engelska.
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Ingår i: Industrial & Engineering Chemistry Research. - : American Chemical Society (ACS). - 0888-5885 .- 1520-5045. ; 59:24, s. 11232-11240
- Relaterad länk:
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https://doi.org/10.1...
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https://miun.diva-po... (primary) (Raw object)
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https://pubs.acs.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The current work aims at understanding factors that influence the processability of nanographite-nanocellulose suspensions onto flexible substrates for production of conductive electrodes. A custom-built slot-die was used in a continuous rollto-roll process to coat the nanomaterial suspension onto substrates with varying surface smoothness, thickness, pore structure, and wet strength. The influence of a carboxymethyl cellulose (CMC) additive on suspension rheology, water release properties, and coating quality was probed. CMC addition reduced the suspension yield stress by 2 orders of magnitude and the average pore diameter of the coated electrodes by 70%. Sheet resistances of 5-9 Omega sq(-1) were obtained for the conductive coatings with a coat weight of 12-24 g m(-2). Calendering reduced the sheet resistance to 1-3 Omega sq(-1) and resistivity to as low as 12 mu Omega m. The coated electrodes were used to demonstrate a metal-free aqueous-electrolyte supercapacitor with a specific capacitance of 63 F g(-1). The results increase our understanding of continuous processing of nanographite-nanocellulose suspensions into electrodes, with potential uses in flexible, lightweight, and environmentally friendly energy devices.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
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