Positive active material for rechargeable lithium-sulfur batteries and method of preparing same

   
   

A positive active material for a rechargeable lithium-sulfur battery includes a core of a sulfur compound and a surface-passivation layer formed on the core. The surface-passivation layer is made of a coating-element-included compound selected from the group consisting of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, a coating-element-included hydroxycarbonate, a mixture thereof.

Um material ativo positivo para uma bateria recarregável do lítio-enxôfre inclui um núcleo de um composto de enxôfre e de uma camada do superfície-surface-passivation dados forma no núcleo. A camada do superfície-surface-passivation é feita de um composto revist-elemento-incluído selecionado do grupo que consiste em um hydroxide revist-elemento-incluído, um oxyhydroxide revist-elemento-incluído, um oxycarbonate revist-elemento-incluído, um hydroxycarbonate revist-elemento-incluído, uma mistura disso.

 
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