Accession Number:

ADA589846

Title:

Solid State Li-ion Batteries

Descriptive Note:

Final rept. 20 Aug 2012-16 Nov 2013

Corporate Author:

COLORADO UNIV AT BOULDER

Personal Author(s):

Report Date:

2013-10-23

Pagination or Media Count:

24.0

Abstract:

Over the last one year, we have worked on an all-solid-state Li-ion battery and demonstrated a specific energy of 225 mWh g-1 based upon the combined mass of both the composite anode and cathode. To realize this full cell, we pair an iron sulfide and sulfur composite cathode with a Si-based anode. The anode active material is a Si-Ti-Ni alloy with good ionic and electronic conductivity that attains a stable specific capacity of 400 mAh g-1 based upon the total mass of the composite anode. To our knowledge, this is the highest stable Si-based allsolid- state anode specific capacity reported to date. To utilize both a lithium free anode and cathode, we adopt a pre-lithiation technique involving stabilized lithium metal powder. This is the first time that this technique has been demonstrated in an all-solid-state battery.

Subject Categories:

  • Physical Chemistry
  • Electrochemical Energy Storage
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE