Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

verfasst von

Björn Karl Licht, Fabian Homeyer, Katharina Bösebeck, Michael Binnewies, Paul Heitjans

Abstract

Graphitic materials are currently the state-of-the-art anode materials for lithium ion secondary batteries. By chemical modification, the electrochemical performance of the pristine materials can be improved. In this paper we report on the preparation of nanostructured copper particles on graphite by thermal decomposition of copper formate. With this technique a novel, simple and low cost method for a homogeneous deposition of nanostructured copper particles on graphite was established. Different amounts of copper were realized and their influence on the electrochemical behavior of the active material was investigated. The copper particles had a size distribution between 50 nm and 300 nm. Electrochemical measurements displayed an improved performance of the synthesized composite material compared to the pristine material. Cyclic voltammetry showed a suppressed cointercalation of solvated lithium and an increased formation of the solid electrolyte interphase (SEI). Battery cycling demonstrated an increased discharge capacity and cycling stability.

Organisationseinheit(en)

Institut für Anorganische Chemie
ZFM - Zentrum für Festkörperchemie und Neue Materialien
Institut für Physikalische Chemie und Elektrochemie

Typ

Artikel

Journal

Zeitschrift fur Physikalische Chemie

Band

229

Seiten

1415-1427

Anzahl der Seiten

13

ISSN

0942-9352

Publikationsdatum

28.09.2015

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physikalische und Theoretische Chemie

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1515/zpch-2015-0003 (Zugang: Unbekannt)