Facile synthesis of silicon films by photosintering as anode materials for lithium-ion batteries

• Published in: Journal of power sources Vol. 214; pp. 21 - 27
• Main Authors: Chen, Wei, Jiang, Nan, Fan, Zhongli, Dhanabalan, Abirami, Chen, Chunhui, Li, Yunjun, Yang, Mohshi, Wang, Chunlei
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.09.2012; Elsevier
• Subjects: Anodes; Applied sciences; Contact; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Kapton foil; Lithium-ion batteries; Materials; Nanoparticles; Photosintering process; Silicon film; Silicon films; Silicon substrates; Solvents; Storage capacity; Lithium-ion batteries; Photosintering process; Kapton foil; Silicon film; High performance; Amorphous material; Costs; Anode; Nanoparticle; Alkaline storage battery; Secondary cell; Electrode material; Lithium battery; Silver; Storage capacity; Silicon; Comparative study
• DOI: 10.1016/j.jpowsour.2012.04.047
• ISSN: 0378-7753

The silicon films as anode materials for lithium-ion batteries were fabricated by the cost-effective, high-throughput photosintering process. The thinner Si film (1.3 μm) exhibited larger storage capacity and better cyclability compared to the thicker one (4.2 μm) due to the close contact of the fused silicon nanoparticles with the substrate. Moreover, the addition of silver nanoparticles improved the conductivity of silicon film and facilitated the amorphous phase formation, resulting in enhanced capacity and cyclability. The photosintering approach highlights the advantage in the flexible and practicable manufacture and shows the promising prospects for developing high-performance Si-based anode materials. [Display omitted] ► Silicon films were fabricated by photosintering process. ► As-prepared silicon films were used as anode materials of lithium-ion batteries. ► The thinner Si film exhibited larger storage capacity and better cyclability. ► The addition of silver nanoparticles further improved the battery performance.