Bulk-Type All Solid-State Batteries with 5 V Class LiNi0.5Mn1.5O4 Cathode and Li10GeP2S12 Solid Electrolyte
Bulk-Type All Solid-State Batteries with 5 V Class LiNi0.5Mn1.5O4 Cathode and Li10GeP2S12 Solid Electrolyte
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DOI：
10.1021/acs.chemmater.5b04940
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发表时间：
2016-04-26
影响因子：
8.6
通讯作者：
Kanno, Ryoji
中科院分区：
文献类型：
--
作者：
Oh, Gwangseok;Hirayama, Masaaki;Kanno, Ryoji
全固态电池在开发具有高能量密度的下一代能量存储设备中具有关键重要性。本文报道了由LiNi0.5Mn1.5O4阴极、Li 10 GeP 2S 12固体电解质和Li金属阳极组成的块型5V级全固态电池的制造和运行。首次放电容量约为80 mAh g（-1）。平均电压为4.3V。放电容量在随后的循环中逐渐降低。X射线衍射和电化学阻抗谱测试结果表明，容量衰减的结果从阴极复合材料上的电阻界面层的生长。开发合适的导电添加剂和硫化物固体电解质材料对于高压全固态电池的发展至关重要。
All solid-state batteries are of key importance in the development of next-generation energy storage devices with high energy density. Herein, we report the fabrication and operation of bulk-type 5 V-class all solid-state batteries consisting of LiNi0.5Mn1.5O4 cathode, Li10GeP2S12 solid-electrolyte, and Li metal anode. The 1st discharge capacity is about 80 mAh g(-1). with an average voltage of 4.3 V. The discharge capacity gradually decreases during the subsequent cycles. X-ray diffraction and electrochemical impedance spectroscopy measurements reveal that the capacity fading results from the growth of a resistive interfacial layer on the cathode composite. The development of suitable conductive additive and sulfide solid electrolyte materials is essential for the development of high-voltage all solid-state batteries.