Flexible Li-CO2 Batteries with Liquid-Free Electrolyte |
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| Authors: | Dr Xiaofei Hu Dr Zifan Li Prof Jun Chen |
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| Institution: | 1. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071 China
These authors contributed equally to this work.;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071 China |
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| 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. |
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| Keywords: | Elastische Funktionseinheiten Festelektrolyte Kohlenstoff-Nanoröhren Li-CO2-Batterien Polymerelektrolyte |
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