期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 8, 期 35, 页码 17980-17986出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ta04526h
关键词
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2017R1D1A1B03031123, NRF-2018R1A4A1024691, 2017M1A2A2087577]
- Ministry of Trade, Industry and Energy (MOTIE)
- Korea Institute for Advancement of Technology (KIAT) through the National Innovation Cluster RD program [P0006704]
- Korea Evaluation Institute of Industrial Technology (KEIT) [P0006704] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2018R1A4A1024691, 2017R1D1A1B03031123] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The organic polymer battery is a promising alternative to the lithium ion battery, however its various properties need to be improved. In this study, we demonstrate an advanced organic radical battery (ORB) using a cathode based on poly(2,2,6,6-tetramethylpiperidine-4-yl-1-oxyl vinyl ether) (PTVE) and a microporous gel polymer electrolyte based on electrospun polyimide membrane. To improve upon the low electrical conductivity of PTVE, it is functionalized on carbon nanotubes (CNTs) by a dissolution-diffusion process. The PTVE-functionalized CNTs have a pi-pi* interaction between the two components, and could be formed into a dense electrode with reasonable porosity. The gel polymer electrolyte with the desired microporosity is also highly compatible. As a result, Na-ion organic full cells using the PTVE-CNT composite electrode, gel polymer electrolyte, and hard carbon anode show good rate capability and stable cycling. The battery achieves discharging capacities of 128.6 and 68.2 mA h g(-1) at 0.5C and 10C with 100% coulombic efficiency and no self-discharge. Hence, this combination of composite electrode and gel polymer electrolyte leads to a safe, lightweight, and environmentally benign sodium battery with high power-rate capability for various applications.
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