journal article·2020-10-14

Mesoporous GeOx/Ge/C as a Highly Reversible Anode Material with High Specific Capacity for Lithium-Ion Batteries

Nuri Hohn, Xiaoyan Wang, Michael A. Giebel, Shanshan Yin, David Müller, Andreas E. Hetzenecker, Lorenz Bießmann, Lucas P. Kreuzer, Gilles E. Möhl, Haoyang Yu, Jonathan G. C. Veinot, Thomas F. Fässler, Ya-Jun Cheng, Peter Müller-Buschbaum

ACS Applied Materials & Interfaces· Volume 12· Issue 41
Publisher page

Abstract

Nanostructured Ge is considered a highly promising material for Li-ion battery applications as Ge offers high specific capacity and Li-ion diffusivity, while inherent mesoporous nanostructures can contribute resistance against capacity fading as typically induced by high volume expansion in bulk Ge films. Mesoporous GeOx/Ge/C films are synthesized using K4Ge9 Zintl clusters as a Ge precursor and the amphiphilic diblock copolymer polystyrene-block-polyethylene oxide as a templating tool. As compared to a reference sample without post-treatment, enhanced surface-to-volume ratios are achieved through post-treatment with a poor-good azeotrope solvent mixture. High capacities of over 2000 mA h g–1 are obtained with good stability over 300 cycles. Information from morphological and compositional characterization for both reference and post-treated sample suggests that the good electrochemical performance originates from reversible GeO2 conversion reactions.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Semiconductor materials and devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany

Ningbo Institute of Materials Technology and Engineering, Polymers and Composites Division, Chinese Academy of Science, 1219 Zhongguan West Road, Ningbo 315201, China

Lehrstuhl für Anorganische Chemie mit Schwerpunkt Neue Materialien, Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany

Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada

Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany

Funding

Deutsche Forschungsgemeinschaft · Center for NanoScience, Ludwig-Maximilians-Universit?t M?nchen · Bayerisches Staatsministerium f?r Wissenschaft, Forschung und Kunst · China Scholarship Council

References (39)

Show source-provided references
1. 10.1016/j.jpowsour.2013.11.10310.1016/j.jpowsour.2013.11.103 ↗
2. 10.1002/adma.20090184610.1002/adma.200901846 ↗
3. 10.1039/c7se00422b10.1039/c7se00422b ↗
4. 10.1002/admi.20160079810.1002/admi.201600798 ↗
5. 10.1016/j.ensm.2017.07.00610.1016/j.ensm.2017.07.006 ↗
6. 10.1039/c0ee00699h10.1039/c0ee00699h ↗
7. 10.1002/adfm.20080109510.1002/adfm.200801095 ↗
8. 10.1149/1.138817810.1149/1.1388178 ↗
9. 10.1002/adma.20070062110.1002/adma.200700621 ↗
10. 10.1038/nnano.2007.41110.1038/nnano.2007.411 ↗
11. 10.1002/adfm.20090030610.1002/adfm.200900306 ↗
12. 10.1002/aenm.20110048510.1002/aenm.201100485 ↗
13. 10.1039/c4nr05125d10.1039/c4nr05125d ↗
14. 10.1021/cr400261y10.1021/cr400261y ↗
15. 10.1021/nl203065e10.1021/nl203065e ↗
16. 10.1039/b004011h10.1039/b004011h ↗
17. 10.1016/j.jelechem.2006.02.02110.1016/j.jelechem.2006.02.021 ↗
18. 10.1002/adma.20070175110.1002/adma.200701751 ↗
19. 10.1002/ange.20150824610.1002/ange.201508246 ↗
20. 10.1039/c8nr09427f10.1039/c8nr09427f ↗
21. 10.1002/adma.20080058610.1002/adma.200800586 ↗
22. 10.1021/am301025310.1021/am3010253 ↗
23. 10.1021/nl304716e10.1021/nl304716e ↗
24. 10.1103/physrev.131.201010.1103/physrev.131.2010 ↗
25. 10.1107/s002188980200608810.1107/s0021889802006088 ↗
26. 10.1107/s0365110x5200170210.1107/s0365110x52001702 ↗
27. 10.1039/c7cp00593h10.1039/c7cp00593h ↗
28. 10.1063/1.192209010.1063/1.1922090 ↗
29. 10.1063/1.174511810.1063/1.1745118 ↗
30. 10.1039/c4ra11431k10.1039/c4ra11431k ↗
31. 10.1103/physrevb.31.219010.1103/physrevb.31.2190 ↗
32. 10.1016/j.nanoen.2017.11.00710.1016/j.nanoen.2017.11.007 ↗
33. 10.1016/j.elecom.2017.09.01910.1016/j.elecom.2017.09.019 ↗
34. 10.1039/c7nr09519h10.1039/c7nr09519h ↗
35. 10.1016/s0010-8545(01)00321-610.1016/s0010-8545(01)00321-6 ↗
36. 10.1021/acsami.5b0847010.1021/acsami.5b08470 ↗
37. 10.1016/j.electacta.2019.06.12310.1016/j.electacta.2019.06.123 ↗
38. 10.1039/c3ee44164d10.1039/c3ee44164d ↗
39. 10.1002/adma.20040100610.1002/adma.200401006 ↗