The Electrochemistry of Amorphous Si-B Thin Film Electrodes in Li Cells. Issue 2 (14th November 2015)

• Record Type: Journal Article
• Authors: Liu, Hui; Zhu, Min; Du, Zhijia; Obrovac, M. N.
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 2(2016)
• Page Start: A192
• Page End: A196
• Publication Date: 2015-11-14
• Subjects: alloy anode -- lithium ion batteries -- silicon; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0451602jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Si1- x B x thin films of 0.071 ≤ x ≤ 0.950 have been synthesized using combinational sputtering. All Si1- x B x film compositions had a highly amorphous structure consisting of amorphous Si and B phases, as characterized by X-ray diffraction. In Li cells, it was found that all of the Si is active and the B is inactive with lithium. Otherwise, the Si1- x B x films have similar characteristics as pure Si film electrodes in Li cells, except with reduced capacity due to the added B. However, shifts in the voltage curves appear when the B content is increased that may be induced by stress-voltage coupling between the active Si and the inactive B phases.