TY  - JOUR
A1  - Ahnert, Karsten
A1  - Abel, Markus
A1  - Kollosche, Matthias
A1  - Jorgensen, Per Jorgen
A1  - Kofod, Guggi
T1  - Soft capacitors for wave energy harvesting
JF  - Journal of materials chemistry
N2  - Wave energy harvesting could be a substantial renewable energy source without impact on the global climate and ecology, yet practical attempts have struggled with the problems of wear and catastrophic failure. An innovative technology for ocean wave energy harvesting was recently proposed, based on the use of soft capacitors. This study presents a realistic theoretical and numerical model for the quantitative characterization of this harvesting method. Parameter regions with optimal behavior are found, and novel material descriptors are determined, which dramatically simplify analysis. The characteristics of currently available materials are evaluated, and found to merit a very conservative estimate of 10 years for raw material cost recovery.
Y1  - 2011
U6  - https://doi.org/10.1039/c1jm12454d
SN  - 0959-9428
SN  - 1364-5501
VL  - 21
IS  - 38
SP  - 14492
EP  - 14497
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Vukicevic, Radovan
A1  - Vukovic, Ivana
A1  - Stoyanov, Hristiyan
A1  - Korwitz, Andreas
A1  - Pospiech, Doris
A1  - Kofod, Guggi
A1  - Loos, Katja
A1  - ten Brinke, Gerrit
A1  - Beuermann, Sabine
T1  - Poly(vinylidene fluoride)-functionalized single-walled carbon nanotubes for the preparation of composites with improved conductivity
JF  - Polymer Chemistry
N2  - The surface of single-walled carbon nanotubes (SWCNTs) was functionalized with azide-terminated poly(vinylidene fluoride) (PVDF). Functionalization was confirmed by dispersibility, Raman spectroscopy, and thermogravimetric analyses. Raman spectra show disordering of the SWCNTs, thus, strongly suggesting that PVDF was covalently attached to SWCNTs. Functionalized SWCNTs were mixed with commercially available PVDF in a twin-screw extruder and thin films were obtained by melt-pressing. Films containing 0.5 and 1 wt% PVDF-functionalized SWCNTs exhibited significantly improved electrical conductivity compared to PVDF films containing pristine SWCNTs.
Y1  - 2012
U6  - https://doi.org/10.1039/c2py20166f
SN  - 1759-9954
VL  - 3
IS  - 8
SP  - 2261
EP  - 2265
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -