Near-Zero Volume Expansion Nanoporous Silicon as Anode for Li-ion Batteries

Autor:	Fabio Maroni, Marco Spreafico, Axel Schönecker, Margret Wohlfahrt-Mehrens, Mario Marinaro
Rok vydání:	2022
Předmět:	Renewable Energy Sustainability and the Environment Materials Chemistry Electrochemistry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials
Zdroj:	Journal of The Electrochemical Society. 169:080506
ISSN:	1945-7111 0013-4651
DOI:	10.1149/1945-7111/ac8628
Popis:	In this work, novel near-zero volume expanding Si-dominant electrodes are presented as promising anodes for next-generation Li-ion batteries. The electrodes contain micrometer-size nano-porous Silicon particles with a carefully tuned morphology and synthesized via a scalable and cost-effective route. Volume expansion during electrochemical Li-Si alloying/de-alloying is found to be almost completely suppressed. Bi-layer pouch cells manufactured with the abovementioned Si-anodes, having industrial relevant areal capacities (≥3 mAh cm−2), and LiNi0.6Mn0.2Co0.2O2 cathodes, show indeed negligible volume expansion as demonstrated by operando dilatometric measurements during galvanostatic cycling and post-mortem SEM cross-sectional analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cecf9df39b48252debeb5d983683efc https://doi.org/10.1149/1945-7111/ac8628 Zobrazit plný text záznamu