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5229830 
Journal Article 
Stable all-solid-state potassium battery operating at room temperature with a composite polymer electrolyte and a sustainable organic cathode 
Fei, H; Liu, Y; An, Y; Xu, X; Zeng, G; Tian, Y; Ci, L; Xi, B; Xiong, S; Feng, J 
2018 
Yes 
Journal of Power Sources
ISSN: 0378-7753 
ELSEVIER SCIENCE BV 
AMSTERDAM 
399 
294-298 
WOS:000445302400035 
The safety issues of potassium battery with nonaqueous electrolytes restrict its practical applications. On the other side, the active material dissolution of organic electrodes deteriorates the performance of organic batteries. As an alternative, all-solid-state potassium batteries comprising the cathode materials of organic compounds can solve the mentioned problems. We herein succeed in demonstrating an all-solid-state potassium battery based on 3,4,9,10-perylene-tetracarboxylicacid-dianhydride (PTCDA) and solid polymer electrolyte(SPE) for the first time. The Poly (propylene carbonate) (PPC)-KFSI with cellulose nonwoven backbone SPE (PPCB-SPE) delivers an ionic conductivity of 1.36 x 10(-5) S cm(-1) at 20 degrees C. Furthermore, PTCDA cathode in all-solid-state battery provides an average discharge voltage of 2.3 V, a high initial capacity of 118 mA h g(-1) at 10 mA g(-1) and a stable cycling performance, showing favorable expectation for the commercial application. 
Potassium-ion batteries; Solid polymer electrolyte; 3,4,9,10-perylene-tetracarboxylicacid-dianhydride; Organic electrode; All-solid-state