All-Solid-State Lithium-Sulfur Batteries Using Sulfurized Alcohol Composite Material with Improved Coulomb Efficiency

被引:8
作者
Takeuchi, Tomonari [1 ]
Kojima, Toshikatsu [1 ]
Kageyama, Hiroyuki [1 ]
Kobayashi, Hironori [1 ]
Mitsuhara, Kei [2 ]
Nakanishi, Koji [2 ]
Ohta, Toshiaki [2 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Dept Energy & Environm, Midorigaoka 1-8-31, Ikeda, Osaka 5638577, Japan
[2] Ritsumeikan Univ, Synchrotron Radiat Ctr, Noji Higashi 1-1-1, Kusatsu, Shiga 5258577, Japan
关键词
all-solid-state batteries; coulomb efficiency; high capacity; lithium-sulfur batteries; sulfurized alcohol composites; POSITIVE ELECTRODE; CATHODE;
D O I
10.1002/ente.201900509
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Sulfurized alcohol composite (SAC), a new type of organosulfur material, is applied to an all-solid-state cell with a sulfur-based solid electrolyte (SE), Li3PS4. The cell shows high specific capacity (600-800 mAh g(-1)), and the initial coulomb efficiency is improved by mechanically milling the cathode layer (SAC + SE). The improvement is attributed to the partial lithiation of the SAC sample by milling with SE, which is confirmed by S K-edge X-ray absorption fine structure measurements. Such prelithiation is advantageous for fabricating high-energy-density all-solid-state cells.
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页数:4
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