Patent ID: 8168325

Claim:
A lithium based electrochemical cell system comprising: a positive electrode comprising a lithium metal oxide; a negative electrode comprising lithium metal; an electrolyte selected from the group consisting of: an electrolyte comprising a lithium salt, a first aprotic solvent; a second aprotic solvent and a degassing agent; an electrolyte comprising a liquid gel, a lithium salt dissolved therein, and a degassing agent; and an electrolyte comprising-a solid polymer, a lithium salt dissolved therein, and a degassing agent wherein: the degassing agent comprises 2,3-dimethyl-1,3 butadiene; 1,3-butadiene; 2,3-dimethyl-1,4-pentadiene; or a compound represented by CH≡R 1 ≡CH, CH 2 ═R 1 , CH≡R 1 , R 2 C≡R 1 ≡CH, R 2 C≡R 1 ; R 1 is an aliphatic carbon chain of 1 to 7 carbons; and R 2 is an a cyclic hydrocarbon, an aromatic hydrocarbon, a pyrrole, a piperazine, or a piperidine.