CAJ | 학술논문

本文研究了石墨烯对阀控式铅酸蓄电池循环性能的影响。研究表明在负极铅膏中添加石墨烯可显著提高电池的循环稳定性，延长电池的循环寿命。负极铅膏中石墨烯所占质量分数为0.25%、0.5%的电池的循环寿命分别是参比电池的1.78倍和2.98倍。利用 SEM、XRD对化成后和循环寿命结束后电池的负极板活性物质的结构及物相进行表征，结果表明石墨烯可有效地对负极板的结构起到支撑作用，使负极活性物质呈现多孔性结构，该多孔结构在循环过程中可有效地减缓负极板的硫酸盐化进程，延长电池的寿命。
본문연구료석묵희대벌공식연산축전지순배성능적영향。연구표명재부겁연고중첨가석묵희가현저제고전지적순배은정성，연장전지적순배수명。부겁연고중석묵희소점질량분수위0.25%、0.5%적전지적순배수명분별시삼비전지적1.78배화2.98배。이용 SEM、XRD대화성후화순배수명결속후전지적부겁판활성물질적결구급물상진행표정，결과표명석묵희가유효지대부겁판적결구기도지탱작용，사부겁활성물질정현다공성결구，해다공결구재순배과정중가유효지감완부겁판적류산염화진정，연장전지적수명。
The inlfuences of graphene on the cycling performance of valve regulated lead-acid batteries were researched in this paper. Graphene added in negative materials could remarkably enhance the cycling stability and prolong the cycle life of valve regulated lead-acid batteries. The cycle life of the batteries with 0.25 wt% and 0.5 wt% graphene are longer by 1.78 and 2.98 times than that of the reference batteries respectively. The structures and phases of the active materials from negative plate after formation and at the end of cycle were characterized by SEM and XRD. The analysis proved that graphene can effectively support the structures of negative plates. Therefore the active materials exhibit porous structures which can effectively retard the sulfation process of negative plates and extend cycle-life of lead-acid batteries.