由于硫(硒)的导电性差、多硫(硒)化物的溶解、硫(硒)的体积膨胀、锂枝晶等问题,导致构建稳定的界面成为锂硫(硒)电池面临的重大挑战.本文介绍了锂硫(硒)电池的研究进展,并以本课题组的研究工作为主,着重讨论了纳米限域效应、化学成键、界面吸附、表面包覆、电解液优化、负极改进等技术方案在锂硫(硒)电池中构建稳定界面的可行性.
The stable interface is still a challenge for lithium-sulfur(selenium) batteries because of the low conductivity of sulfur(selenium), dissolution of polysulfide(polyselenide), volume expansion of sulfur(selenium), and lithium dendrite growth. This review describers some recent developments in lithium-sulfur(selenium) batteries and highlights our efforts in this field. The possible strategies for building stable interface in the lithium-sulfur(selenium) batteries including nano-restriction effect, chemical bonding, interface adsorption, surface coating, electrolyte optimization, and Lithium anode treatment have been discussed.