A Peanut Shell Inspired Scalable Synthesis of Three-Dimensional Carbon Coated Porous Silicon Particles as an Anode for Lithium-Ion Batteries. (20th February 2015)

• Record Type: Journal Article
• Authors: Han, Xiang; Chen, Huixin; Liu, Jingjing; Liu, Hanhui; Wang, Peng; Huang, Kai; Li, Cheng; Chen, Songyan; Yang, Yong
• Is Part Of: Electrochimica acta. Volume 156(2015)
• Page Start: 11
• Page End: 19
• Publication Date: 2015-02-20
• Subjects: porous silicon particle -- peanut shell -- C/SiO2 coating -- lithium-ion anode -- electrochemical performance; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.01.051
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: A novel, economical ball milling and heat treatment of porous silicon based anodes was introduced to boost the electrochemical performance of Li-ion batteries. The compact C/SiO2 -coated peanut shell-like electrodes could accommodate volume change effectively. The electrodes exhibited outstanding cycling performance and rate capacities. Our work gives a compelling look at a novel and large-scale production method of fabricating next generation Si/C anodes for high-performance LIBs. Abstract: A novel, economical ball milling and heat treatment of porous silicon based anodes was introduced to boost the electrochemical performance and cycle capacity of Li-ion batteries. The resultant peanut shell-like electrodes combined multiple advantageous features, including a continuous, flexible electrically conductive carbon network, a synergistic C/SiO2 coating layer and improved interfacial contact, in a peanut shell structure with void space. The electrodes achieved an initial discharge capacity of 1909 mA h g −1 with coulombic efficiency of 88.8% as well as a high reversible capacity of 1179 mA h g −1 after 120 cycles at 0.1C. In addition, the material was capable of reaching a capacity of 493 mA h g −1 even at the high charge rate of 4C. This work gives a compelling look at a novel and large-scale production method of fabricating next generation Si/C anodes for high-performance LIBs.