CAJ | 학술논문

锂硫电池具有很高的能量密度[2600(W·h)／kg]，其正极材料硫具有储藏丰富、对环境友好等优点，因此锂硫电池成为下一代二次电池的研发重点。然而，硫的高绝缘性、反应过程中体积的变化以及中间产物多硫离子溶解等难题，使其目前很难实现商品化。石墨烯具有超高的导电性和优异的力学性能，其与硫制成的复合材料作为电池正极材料可以有效地解决上述问题。从石墨烯–硫复合材料、石墨烯–碳–硫复合材料、石墨烯–聚合物–硫复合材料、石墨烯–氧化物–硫复合材料等方面出发，总结了石墨烯在锂硫电池中作为正极材料的最新进展，并且提出了未来石墨烯在锂硫电池中应用的研究主要在探索石墨烯简捷的制备方法、研究石墨烯新的应用方式、开发多种材料复合等方面。
리류전지구유흔고적능량밀도[2600(W·h)／kg]，기정겁재료류구유저장봉부、대배경우호등우점，인차리류전지성위하일대이차전지적연발중점。연이，류적고절연성、반응과정중체적적변화이급중간산물다류리자용해등난제，사기목전흔난실현상품화。석묵희구유초고적도전성화우이적역학성능，기여류제성적복합재료작위전지정겁재료가이유효지해결상술문제。종석묵희–류복합재료、석묵희–탄–류복합재료、석묵희–취합물–류복합재료、석묵희–양화물–류복합재료등방면출발，총결료석묵희재리류전지중작위정겁재료적최신진전，병차제출료미래석묵희재리류전지중응용적연구주요재탐색석묵희간첩적제비방법、연구석묵희신적응용방식、개발다충재료복합등방면。
Lithium-sulfur batteries have a high energy density(2 600 Wh/kg),of which sulfur,the cathode material, possesses several advantages such as abundant storage and environmental- friendliness etc. Therefore,lithium-sulfur batteries have become attractive candidates for the next generation rechargeable batteries. However,some difficult problems such as high insulation of sulfur,volume changes during the reaction and the dissolution of the intermediate polysulfide ions make it hard to realize commercialization. Graphene owns high electrical conductivity and excellent mechanical properties,thus composite materials graphene with sulfur serving as the cathode can solve the above problems effectively. Based on the aspects of graphene-sulfur composite materials,graphene-carbon-sulfur composite materials,graphene-polymer-sulfur composite materials and graphene-oxide-composite materials,the recent progress of graphene used as lithium-sulfur batteries cathode was summarized. And the future research of the applications of graphene in lithium-sulfur battery primarily lies in the exploration of simple preparation method of graphene,new ways of application of graphene and the development of various kinds of composite materials,etc. was proposed.