Bulk-Type All Solid-State Batteries with 5 V Class LiNi0.5Mn1.5O4 Cathode and Li10GeP2S12 Solid Electrolyte

详细信息    查看全文

• 作者：Gwangseok Oh ; Masaaki Hirayama ; Ohmin Kwon ; Kota Suzuki ; Ryoji Kanno
• 刊名：Chemistry of Materials
• 出版年：2016
• 出版时间：April 26, 2016
• 年：2016
• 卷：28
• 期：8
• 页码：2634-2640
• 全文大小：455K
• 年卷期：0
• ISSN：1520-5002

文摘

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 LiNi_0.5Mn_1.5O₄ 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.