TY  - JOUR
A1  - Jia, He
A1  - Friebe, Christian
A1  - Schubert, Ulrich S.
A1  - Zhang, Xiaozhe
A1  - Quan, Ting
A1  - Lu, Yan
A1  - Gohy, Jean-Francois
T1  - Core-Shell Nanoparticles with a Redox Polymer Core and a Silica Porous Shell as High-Performance Cathode Material for Lithium-Ion Batteries
JF  - Energy technology : generation, conversion, storage, distribution
N2  - A facile and novel method for the fabrication of core-shell nanoparticles (PTMA@SiO2) based on a poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA) core and a porous SiO2 shell is reported. The core-shell nanoparticles are further self-assembled with negatively charged multi-walled carbon nanotubes (MWCNTs), which results in the formation of a free-standing cathode electrode. The porous SiO2 shell not only effectively improves the stability of the linear PTMA redox polymer with low molar mass in organic electrolytes but also leads to the uniform dispersion of PTMA active units in the MWCNTs conductive network. The PTMA@SiO2@MWCNT composite electrode exhibits a specific capacity as high as 73.8 mAh g at 1 C and only 0.11% capacity loss per cycle at a rate of 2 C.
KW  - composite electrodes
KW  - core-shell nanoparticles
KW  - energy storage
KW  - lithium-ion batteries
KW  - redox polymers
Y1  - 2019
U6  - https://doi.org/10.1002/ente.201901040
SN  - 2194-4288
SN  - 2194-4296
VL  - 8
IS  - 3
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Herfurth, Christoph
A1  - Voll, Dominik
A1  - Buller, Jens
A1  - Weiss, Jan
A1  - Barner-Kowollik, Christopher
A1  - Laschewsky, André
T1  - Radical addition fragmentation chain transfer (RAFT) polymerization of ferrocenyl (meth)acrylates
JF  - Journal of polymer science : A, Polymer chemistry
N2  - We report on the controlled free radical homopolymerization of 1-ferrocenylethyl acrylate as well as of three new ferrocene bearing monomers, namely 4-ferrocenylbutyl acrylate, 2-ferrocenylamido-2-methylpropyl acrylate, and 4-ferrocenylbutyl methacrylate, by the RAFT technique. For comparison, the latter monomer was polymerized using ATRP, too. The ferrocene containing monomers were found to be less reactive than their analogues free of ferrocene. The reasons for the low polymerizability are not entirely clear. As the addition of free ferrocene to the reaction mixture did not notably affect the polymerizations, sterical hindrance by the bulky ferrocene moiety fixed on the monomers seems to be the most probable explanation. Molar masses found for 1-ferrocenylethyl acrylate did not exceed 10,000 g mol(-1), while for 4-ferrocenylbutyl (meth) acrylate molar masses of 15,000 g mol(-1) could be obtained. With PDIs as low as 1.3 in RAFT polymerization of the monomers, good control over the polymerization was achieved.
KW  - ferrocene
KW  - living radical polymerization (LRP)
KW  - monomers
KW  - radical addition fragmentation chain transfer (RAFT)
KW  - radical polymerization
KW  - redox polymers
KW  - synthesis
Y1  - 2012
U6  - https://doi.org/10.1002/pola.24994
SN  - 0887-624X
VL  - 50
IS  - 1
SP  - 108
EP  - 118
PB  - Wiley-Blackwell
CY  - Malden
ER  -