TY  - JOUR
A1  - Khodeir, Miriam
A1  - Ernould, Bruno
A1  - Brassinne, Jeremy
A1  - Ghiassinejad, Sina
A1  - Jia, He
A1  - Antoun, Sayed
A1  - Friebe, Christian
A1  - Schubert, Ulrich S.
A1  - Kochovski, Zdravko
A1  - Lu, Yan
A1  - Van Ruymbeke, Evelyne
A1  - Gohy, Jean-Francois
T1  - Synthesis and characterisation of redox hydrogels based on stable nitroxide radicals
JF  - Soft matter
N2  - The principle of encapsulation/release of a guest molecule from stimuli responsive hydrogels (SRHs) is mainly realised with pH, temperature or light stimuli. However, only a limited number of redox responsive hydrogels have been investigated so far. We report here the development of a SRH that can release its guest molecule upon a redox stimulus. To obtain this redox hydrogel, we have introduced into the hydrogel the 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) stable nitroxide radical, which can be reversibly oxidized into an oxoammonium cation (TEMPO+). Water solubility is provided by the presence of the (oligoethyleneglycol)methacrylate (OEGMA) comonomer. Electrochemical and mechanical characterization showed that those gels exhibit interesting physicochemical properties, making them very promising candidates for practical use in a wide range of applications.
Y1  - 2019
U6  - https://doi.org/10.1039/c9sm00905a
SN  - 1744-683X
SN  - 1744-6848
VL  - 15
IS  - 31
SP  - 6418
EP  - 6426
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
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  - Jia, He
A1  - Quan, Ting
A1  - Liu, Xuelian
A1  - Bai, Lu
A1  - Wang, Jiande
A1  - Boujioui, Fadoi
A1  - Ye, Ran
A1  - Vald, Alexandru
A1  - Lu, Yan
A1  - Gohy, Jean-Francois
T1  - Core-shell nanostructured organic redox polymer cathodes with superior performance
JF  - Nano Energy
N2  - Core-shell nanoparticles stabilized by a cationic surfactant are prepared from the poly(2,2,6,6-tetra-methylpiperidinyloxy-4-yl methacrylate) redox polymer. The nanoparticles are further self-assembled with negatively charged reduced graphene oxide nanosheets and negatively charged mull-walled carbon nanotubes. This results in the formation of a free-standing cathode with a layered nanostructure and a high content of redox polymer that exhibits 100% utilization of the active substance with a measured capacity as high as 105 mAh/g based on the whole weight of the electrode.
KW  - Nanostructured
KW  - Redox polymer
KW  - Organic electrode
KW  - Lithium ion battery
KW  - Energy storage
Y1  - 2019
U6  - https://doi.org/10.1016/j.nanoen.2019.103949
SN  - 2211-2855
SN  - 2211-3282
VL  - 64
PB  - Elsevier
CY  - Amsterdam
ER  -