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Small structures: self supporting nanostructures as an emerging platform for high performance lithium sulfur batteries

wallpapers News 2020-11-09
With the increase of global energy dem the deterioration of environment the development of clean renewable energy has become an inevitable requirement of social sustainable development such as wind energy solar energy tidal energy so on. However these are intermittent energy which can only be used on a large scale after being converted into stable electric energy by electrochemical energy storage system. Therefore the development of energy storage devices with high energy density is very important for the effective storage of renewable energy. Among all kinds of energy storage devices lithium sulfur battery has high theoretical energy density (2600 whkg-1) low cost showing a good application prospect. However lithium sulfur battery is facing many challenges such as low specific capacity short cycle life poor coulomb efficiency which hinder the development of its application. To solve the above problems researchers mainly improve the electrochemical performance of lithium sulfur battery from three aspects: sulfur carrier design functional membrane modification lithium anode protection. The successful application of these methods depends largely on the design optimization of electrode structure interface layer. Among them self-supporting structure is usually assembled by nanostructure units without binder fluid collector. It has excellent mechanical strength good conductivity rich pore structure. It has unique advantages in sulfur carrier functional separator swich lithium anode protection.

recently Niu Zhiqiang a research team from school of chemistry of Nankai University together with Dr. Liu Lili (co corresponding author) from school of materials science engineering of Tianjin University of technology reviewed the research progress of self-supporting nanostructures in lithium sulfur batteries in detail. Firstly the advantages disadvantages of the self-supporting graphene anode the self-supporting graphene anode were discussed. In addition they also summarized the application of self-supporting nanostructures in functional separator lithium anode protection. Finally the problems challenges of self-supporting nanostructures in the construction of high-performance lithium sulfur batteries are discussed reasonable suggestions for their further development application are given. This paper will provide new ideas reference for the realization of high energy density lithium sulfur battery the promotion of its application process. Platform for small structures
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