Exploring unique properties of polypyrrole reinforced molybdenum disulfide electrodes for aqueous aluminum ion capacitors
He Y. Pan X. Zhang Z. Long Q. Liu Q. Azat S. Abbas Q. Qiu G. Supiyeva Z. Chen X.
10 April 2025Elsevier Ltd
Journal of Energy Storage
2025#114
Polypyrrol (PPy) as a highly conductive polymer displays remarkable pseudocapacitive properties. This paper focuses on the electrodeposition of PPy on conductive carbon cloth (CC) as a substrate with MoS2 nanosheets as an intermediate layer. The electrodeposition of PPy was carried out at a constant pressure for 150 s, 300 s, 450 s, and 600 s at 0.75 V and compared with pristine substrate. Then the PPy@MoS2/CC electrode was electrochemically tested in 1 M AlCl3 electrolyte exhibiting capacitance of 659 F g−1, 815 F g−1, 464 F g−1, and 363 F g−1, respectively, compared to 595 F g−1 for pristine substrate. Many different types of tests have demonstrated that the successfully deposited PPy@MoS2 material displays a wrinkled structure. Further, using electrochemical methods and additional techniques, the impact of cation size on the performance of electrodes was analyzed using 1 M AlCl3, 1 M MgCl2, 1 M KCl, and 1 M NaCl electrolytes. The specific capacitance of PPy@MoS2/CC electrode (PPy deposited for 300 s) was found to be 815 F g−1 in 1 M AlCl3, 758 F g−1 in 1 M KCl, 649 F g−1 in 1 M NaCl, and 670 F g−1 in 1 M MgCl2 electrolytes at 2 A g−1. Finally, the symmetric device PPy@MoS2/CC//PPy@MoS2/CC displays a maximum energy density of 26.39 Wh Kg−1 at 500 W Kg−1 and a long lifespan of 10,000 cycles.
Aluminum ion capacitor , Aqueous electrolyte , Hybrid supercapacitor , Molybdenum disulfide , Polypyrrole , PPy composite materials
Text of the article Перейти на текст статьи
Guangdong Provincial Key Laboratory of Multi-energy Complementary Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, 523808, China
School of Semiconductor Science and Technology, South China Normal University, Foshan, 528225, China
Zhongshan Advanced New Functional Materials Engineering Technology Research Center, Guangdong Engineering Technology Research Center, Laboratory of Advanced Functional Materials, Zhongshan Polytechnic, Zhongshan, 528400, China
School of Energy Science and Technology, Henan University, Kaifeng, 475004, China
Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan, 60-965, Poland
Zhongshan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Zhongshan, 528405, China
Satbayev University, Almaty, 050013, Kazakhstan
Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz, 8010, Austria
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty, 050040, Kazakhstan
Institute of Combustion Problems, Almaty, 050012, Kazakhstan
Guangdong Provincial Key Laboratory of Multi-energy Complementary Distributed Energy Systems
School of Semiconductor Science and Technology
Zhongshan Advanced New Functional Materials Engineering Technology Research Center
School of Energy Science and Technology
Faculty of Chemical Technology
Zhongshan Power Supply Bureau of Guangdong Power Grid Co.
Satbayev University
Institute for Chemistry and Technology of Materials
Faculty of Chemistry and Chemical Technology
Institute of Combustion Problems
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026