title: Precursor polymers for the carbon coating of Au@ZnO multipods for application as active material in lithium-ion batteries.
abstract: The synthesis of statistical and block copolymers based on polyacrylonitrile, as a source for carbonaceous materials, and thiol-containing repeating units as inorganic nanoparticle anchoring groups is reported. These polymers are used to coat Au@ZnO multipod heteroparticles with polymer brushes. IR spectroscopy and transmission electron microscopy prove the successful binding of the polymer onto the inorganic nanostructures. Thermogravimetric analysis is applied to compare the binding ability of the block and statistical copolymers. Subsequently, the polymer coating is transformed into a carbonaceous (partially graphitic) coating by pyrolysis. The obtained carbon coating is characterized by Raman spectroscopy and energy-dispersive X-ray (EDX) spectroscopy. The benefit of the conformal carbon coating of the Au@ZnO multipods regarding its application as lithium-ion anode material is revealed by performing galvanostatic cycling, showing a highly enhanced and stabilized electrochemical performance of the carbon-coated particles (still 831 mAh g(-1) after 150 cycles) with respect to the uncoated ones (only 353 mAh g(-1) after 10 cycles).
authors.affiliation: Institute for Organic Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.|Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128, Mainz, Germany.
authors.forename: Bernd
authors.initials: B
authors.lastname: Oschmann
authors.affiliation: Institute for Inorganic and Analytical Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Muhammad Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.affiliation: Helmholtz Institute Ulm (HIU), Electrochemistry I, Helmholtzstr. 11, 89081, Ulm, Germany.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany.|Institute of Physical Chemistry & MEET Battery Research Center, University of Muenster, Corrensstr. 28/30 & 46, 48149, Muenster, Germany.
authors.forename: Franziska
authors.initials: F
authors.lastname: Mueller
authors.affiliation: Helmholtz Institute Ulm (HIU), Electrochemistry I, Helmholtzstr. 11, 89081, Ulm, Germany.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany.|Institute of Physical Chemistry & MEET Battery Research Center, University of Muenster, Corrensstr. 28/30 & 46, 48149, Muenster, Germany.
authors.forename: Dominic
authors.initials: D
authors.lastname: Bresser
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
authors.forename: Ingo
authors.initials: I
authors.lastname: Lieberwirth
authors.affiliation: Institute for Inorganic and Analytical Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Tremel
authors.affiliation: Helmholtz Institute Ulm (HIU), Electrochemistry I, Helmholtzstr. 11, 89081, Ulm, Germany.|Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany.|Institute of Physical Chemistry & MEET Battery Research Center, University of Muenster, Corrensstr. 28/30 & 46, 48149, Muenster, Germany.
authors.forename: Stefano
authors.initials: S
authors.lastname: Passerini
authors.affiliation: Institute for Organic Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Zentel
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D007477:Ions; D011108:Polymers; C010504:polyacrylonitrile; D002244:Carbon; D006046:Gold; D008094:Lithium; D015034:Zinc Oxide
keywords: RAFT polymerization; anodes; carbon coating; lithium-ion batteries; polyacrylonitrile