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A new potassium dual-ion hybrid supercapacitor based on battery-type Ni(OH)2 nanotube arrays and pseudocapacitor-type V2O5-anchored carbon nanotubes electrodes.
Shi, Chenglong; Sun, Junlong; Pang, Youyong; Liu, YongPing; Huang, Bin; Liu, Bo-Tian.
Afiliación
  • Shi C; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China.
  • Sun J; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China.
  • Pang Y; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China.
  • Liu Y; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China.
  • Huang B; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China.
  • Liu BT; Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Biological Engineering, Guilin University of Technology, Guilin 541004, China; Guangdong Institute of Semiconductor Industrial Technology, Guangdong Academy of Science, Guangzhou 510650, Chi
J Colloid Interface Sci ; 607(Pt 1): 462-469, 2022 Feb.
Article en En | MEDLINE | ID: mdl-34509728
Hybrid supercapacitors (HSCs) with the characteristics of high energy density, long cycle life and without altering their power density need to be developed urgently. Herein, a novel dual-ion hybrid supercapacitors (DHSCs) with Ni(OH)2 nanotube arrays (NTAs) as positive electrode and V2O5 directly grown on freestanding carbon nanotubes (CNTs) as negative electrode is assembled. In charging mechanism of DHSCs, K+ are inserted into the V2O5 negative while OH- react with Ni(OH)2 positive; during discharge, the K+ and OH- are released from V2O5 negative and Ni(OH)2 positive, respectively, and return back to the electrolyte, which is quite different from traditional metal ion or alkaline supercapacitors. Because of the merits combining dual-ion mechanism and HSCs, the DHSC displays excellent capacity retention of âˆ¼ 81.4% after 10,000 cycles, high energy density of âˆ¼ 25.4 µWh cm-2 and high power density of âˆ¼ 4.66 mW cm-2, indicating the potential applications in the further on flexible wearable electronics.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos