<正>PVC disulfide （2SPVC） was synthesized by solution crosslink and its molecular structure was confirmed by infrared spectrum. 2SPVC’s specific area is 36.1 m2·g-1 tested by stand BET method

and granularity experiment gives out the particle size of d0.5= 11.3μm. With SEM （Scanning Electron Microscope） experiment the surface morphology and particle shape of 2SPVC were observed. Cyclic voltammetry （scan rate: 0.5 mV·s-1） shows that 2SPVC experience an obvious S-S redox reaction in charge-discharge process. When 2SPVC was used as cathode material for secondary lithium battery in a 1 mol·L-1 solution of lithium bis（trifluoromethylsulfonyl） imide （Li（CF3SO2）2N） in a 5:45:50 volume ratio mixture of o-xylene （oxy）

diglyme （DG） and dimethoxymethane （DME） at 30℃

the first discharge capacity of 2SPVC is about 400.3 mAh·g-1 which is very close to its theoretical value （410.5 mAh·g-1） at a constant discharge current of 15 mA·g-1. It can retain at about 346.1 mAh·g-1 of discharge capacity after 30 charge-discharge cycles. So 2SPVC is a very promising cathode candidate for rechargeable lithium batteries.