Type

Journal Article

Authors

Christoph Marschner
Justin D. Holmes
Peter Poelt
Ilse Letofsky-Papst
Fionán Davitt
John O'Connell
Giuseppe A. Verni
Colm O'Dwyer
David McNulty
Subhajit Biswas
and 1 others

Subjects

Chemistry

Topics
germanium ge nanowires nanowires environment x ray synthesis low temperature battery anodes

Rapid, low temperature synthesis of germanium nanowires from oligosilylgermane precursors (2017)

Abstract New oligosilylgermane compounds with weak Ge–H bonds have been used as precursors for the rapid synthesis of germanium (Ge) nanowires in high yields (>80%), via a solution–liquid–solid (SLS) mechanism, using indium (In) nanoparticles as a seeding agent over a temperature range between 180 and 380 °C. Even at low growth temperatures, milligram quantities of Ge nanowires could be synthesized over a reaction period of between 5 and 10 min. The speed of release of Ge(0) into the reaction environment can be tuned by altering the precursor type, synthesis temperature, and the presence or lack of an oxidizing agent, such as tri-n-octylphosphine oxide (TOPO). Energy-dispersive X-ray analysis showed that silicon atoms from the precursors were not incorporated into the structure of the Ge nanowires. As both In and Ge facilitate reversible alloying with Li, Li-ion battery anodes fabricated with these nanowires cycled efficiently with specific capacities, i.e., >1000 mAh g–1
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Full list of authors on original publication

Christoph Marschner, Justin D. Holmes, Peter Poelt, Ilse Letofsky-Papst, Fionán Davitt, John O'Connell, Giuseppe A. Verni, Colm O'Dwyer, David McNulty, Subhajit Biswas and 1 others

Experts in our system

1
Christoph Marschner
University College Cork
Total Publications: 3
 
2
Justin D. Holmes
University College Cork
Total Publications: 182
 
3
John O'Connell
University College Cork
Total Publications: 17
 
4
Giuseppe Alessio Verni
University College Cork
Total Publications: 5
 
5
Colm O'Dwyer
University College Cork
Total Publications: 121
 
6
David McNulty
University College Cork
Total Publications: 20
 
7
Subhajit Biswas
University College Cork
Total Publications: 26