All-solid-state secondary lithium battery using solid polymer electrolyte and anthraquinone cathode

• Published in: Solid state ionics Vol. 300; pp. 114 - 119
• Main Authors: Li, Wangyu, Chen, Long, Sun, Yunhe, Wang, Congxiao, Wang, Yonggang, Xia, Yongyao
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2017
• Subjects: All-solid-state battery; Anthraquinone; Solid polymer electrolyte; All-solid-state battery; Solid polymer electrolyte; Anthraquinone
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/j.ssi.2016.12.013

An all-solid-state battery was fabricated by using a PEO-base solid polymer as electrolyte and an organic material anthraquinone (AQ) as cathode. The anthraquinone delivers a specific discharge capacity of 183mAhg−1 at first cycle at current density of 20mAg−1 at 65°C. The use of solid polymer electrolyte reduces the dissolution of organic active material greatly, improving the cycle performance of the battery. Therefore, the all-solid-state battery delivers a better cycling property. It can still retain a capacity of 136mAhg−1 after 50cycles, corresponding to a capacity retention of 74%, while capacity retention of the cell using liquid electrolyte was only 28% after 20cycles. The all-solid-state battery shows more stable interfacial resistance during charge–discharge process. It displays good rate ability and a better thermal stability. The all-solid-state battery using solid polymer electrolyte and anthraquinone cathode displays better cycling life, good rate capability and improved thermal stability. [Display omitted] •An all-solid-state battery was fabricated by using a solid polymer as electrolyte and an organic material as cathode.•This battery shows a better cycle life. The capacity retention was 74% at 0.1 C (20mAg−1) after 50 cycles.•Lithium battery using the polymer electrolyte shows an enhanced thermal stability.