Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte
Development of bulk-type all-solid-state lithium-sulfur battery using LiBH4 electrolyte
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DOI：
10.1063/1.4893666
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发表时间：
2014-08
影响因子：
4
通讯作者：
A. Unemoto;Syun Yasaku;G. Nogami;Masaru Tazawa;Mitsugu Taniguchi;M. Matsuo;T. Ikeshoji;S. Orimo
中科院分区：
文献类型：
--
作者：
A. Unemoto;Syun Yasaku;G. Nogami;Masaru Tazawa;Mitsugu Taniguchi;M. Matsuo;T. Ikeshoji;S. Orimo
采用LiBH4电解液，对块状全固态锂硫电池的稳定运行进行了研究。通过元素硫和碳在复合粉末中的相互分散，提高了绝缘元素硫作为正极的电化学活性。随后，由于LiBH4电解液的高度变形性质，硫碳复合材料与LiBH4粉末之间的紧密界面只有通过冷压才能表现出来。LiBH4的高还原能力允许使用Li负极来提高能量密度。结果表明，绝缘硫的界面改性和高能量密度的全固态锂S电池结构是可行的。
Stable battery operation of a bulk-type all-solid-state lithium-sulfur battery was demonstrated by using a LiBH4 electrolyte. The electrochemical activity of insulating elemental sulfur as the positive electrode was enhanced by the mutual dispersion of elemental sulfur and carbon in the composite powders. Subsequently, a tight interface between the sulfur-carbon composite and the LiBH4 powders was manifested only by cold-pressing owing to the highly deformable nature of the LiBH4 electrolyte. The high reducing ability of LiBH4 allows using the use of a Li negative electrode that enhances the energy density. The results demonstrate the interface modification of insulating sulfur and the architecture of an all-solid-state Li-S battery configuration with high energy density.