Voltage-responsive coating for lithium-sulfur battery
AssigneesThe Regents of the University of California, GM Global Technology Operations LLC
InventorsQiangfeng Xiao, Mei Cai, Yunfeng Lu, Zheng Chen, Huihui Zhou, Xiaolei Wang
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Abstract
A sulfur-containing electrode with a surface layer comprising voltage responsive material. The electrode is used in a lithium-sulfur or silicon-sulfur battery.
Claims17
A sulfur-containing electrode with a surface layer comprising voltage responsive material.
A method according to claim 11, wherein the expansion slows or prevents egress of polysulfides from the cathode.
A method of improving cycling stability of a lithium sulfur or silicon sulfur battery, comprising infiltrating pores of a sulfur-containing cathode of the battery with a transition metal compound that expands in volume during discharge of the battery.
A method of preparing a sulfur-containing electrode, comprising:
- preparing a porous sulfur-containing electrode having a surface with pores;
- infiltrating the pores with a transition metal alkoxide;
- hydrolyzing the alkoxide;
- and
- annealing the electrode.
Dependencies are inferred from the claim text.