期刊
CHEMICAL ENGINEERING JOURNAL
卷 427, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.131799
关键词
Zinc-based electrochemical energy storage; Nanocomposite cathode; Functionalized carbon nanotubes; Polyaniline; Flexible energy storage
资金
- National Natural Science Foundation of China [52002149]
- Guangdong Basic and Applied Basic Research Foundation [2020A1515111202]
This study synthesized functionalized carbon nanotube/polyaniline nanocomposites and applied them as cathode materials for zinc-based energy storage systems, achieving high capacity, good rate performance, and long cycle life. This work is expected to provide new ideas for high-performance and flexible zinc-based energy storage systems.
Aqueous zinc-based electrochemical energy storage (EES) systems including zinc-ion batteries and zinc-ion hybrid supercapacitors are increasingly studied, due to their great potential for safe, high-power and wearable energy storage. The electrochemical performance of zinc-based EES systems is strongly affected by cathode materials. Herein, functionalized carbon nanotube (f-CNT)/polyaniline (PANI) nanocomposites were synthesized by in-situ polymerization of PANI on f-CNTs and then used as cathode materials for zinc-based EES systems. Benefiting from better hydrophilicity and chemical adsorption ability of Zn2+, f-CNTs are superior to pristine CNTs in electrochemical performance, and the f-CNT/PANI nanocomposites effectively integrated capacitive energy storage mechanism of f-CNTs with redox reaction energy storage mechanism of PANI, thereby exhibiting superior comprehensive electrochemical properties including high capacity, good rate performance and long cycle life. Moreover, high-performance and flexible zinc-based EES devices were constructed with the f-CNT/ PANI nanocomposite cathodes. This work is expected to provide new thoughts to achieve high-performance and flexible zinc-based EES.
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