Magnetron Sputtering Formation of Germanium Nanoparticles for Electrochemical Lithium Intercalation.

ABSTRACT: In the drive towards increased lithium based battery capacity, germanium is an attractive material due to its very high lithium storage capacity, second only to silicon. The persistent down-side is the considerable embrittlement accompanying its remarkable volume expansion of close to 300 %. A proven method to accommodate for this lattice expansion is the reduction of the size towards the nanoscale at which the fracturing is prevented by "breathing". In this work we employed a novel magnetron sputtering gas aggregation nanoparticle generator to create unprecedented layers of well-defined germanium nanoparticles with sizes below 20 nm. The electrochemical lithium intercalation was monitored by a suite of techniques under which Raman spectroscopy, which provided clear evidence of the presenc

SUBMITTER: Pajola T 

PROVIDER: S-EPMC11747581 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature