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

authored by

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.

Organisation(s)

Institute of Inorganic Chemistry
Center for Solid State Chemistry and New Materials (ZFM)
Institute of Physical Chemistry and Electrochemistry

Type

Article

Journal

Zeitschrift fur Physikalische Chemie

Volume

229

Pages

1415-1427

No. of pages

13

ISSN

0942-9352

Publication date

28.09.2015

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1515/zpch-2015-0003 (Access: Unknown)