Flexible Li‐CO2 Batteries with Liquid‐Free Electrolyte. (13th April 2017)

• Record Type: Journal Article
• Authors: Hu, Xiaofei; Li, Zifan; Chen, Jun
• Is Part Of: Angewandte Chemie. Volume 129:Number 21(2017)
• Page Start: 5879
• Page End: 5883
• Publication Date: 2017-04-13
• Subjects: Elastische Funktionseinheiten -- Festelektrolyte -- Kohlenstoff-Nanoröhren -- Li-CO2-Batterien -- Polymerelektrolyte; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201701928
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Developing flexible Li‐CO2 batteries is a promising approach to reuse CO2 and simultaneously supply energy to wearable electronics. However, all reported Li‐CO2 batteries use liquid electrolyte and lack robust electrolyte/electrodes structure, not providing the safety and flexibility required. Herein we demonstrate flexible liquid‐free Li‐CO2 batteries based on poly(methacrylate)/poly(ethylene glycol)‐LiClO4 ‐3 wt %SiO2 composite polymer electrolyte (CPE) and multiwall carbon nanotubes (CNTs) cathodes. The CPE (7.14×10 −2 mS cm −1 ) incorporates with porous CNTs cathodes, displaying stable structure and small interface resistance. The batteries run for 100 cycles with controlled capacity of 1000 mAh g −1 . Moreover, pouch‐type flexible batteries exhibit large reversible capacity of 993.3 mAh, high energy density of 521 Wh kg −1, and long operation time of 220 h at different degrees of bending (0–360°) at 55 °C.