Enhancing zinc-ion batteries: PEDOT-MnO2 cathodes for superior stability and capacity

被引:4
|
作者
Silapasom, Wichuda [1 ]
Kao-ian, Wathanyu [1 ]
Wannapaiboon, Suttipong [2 ]
Opchoei, Montree [1 ]
Kheawhom, Soorathep [1 ,3 ,4 ]
机构
[1] Chulalongkorn Univ, Fac Engn, Dept Chem Engn, Bangkok 10330, Thailand
[2] Publ Org, Synchrotron Light Res Inst, Nakhon Ratchasima 30000, Thailand
[3] Chulalongkorn Univ, Ctr Excellence Adv Mat Energy Storage, Bangkok 10330, Thailand
[4] Chulalongkorn Univ, Fac Engn, Biocircular Green Econ Technol & Engn Ctr, BCGeTEC, Bangkok 10330, Thailand
关键词
PEDOT-encapsulated MnO2; Zinc-ion battery; Structural engineering; Heterostructure; X-ray absorption spectroscopy; Structural stability; Phase conversion;
D O I
10.1016/j.radphyschem.2024.111935
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Of late, zinc-ion batteries (ZIBs) are emerging as a vital component in sustainable energy storage, ensuring an environmentally friendly alternative to traditional battery systems. Herein, this study provides a novel approach to ZIB research, undertaking to encapsulate PEDOT in a layered MnO2 structure. Through the use of comprehensive analytical techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray absorption spectroscopy (XAS), a detailed analysis of the enhanced PEDOT-MnO2 heterostructure is presented. Our research demonstrates that the encapsulation of PEDOT results in a substantial increase in initial discharge capacity (similar to 40%) compared to traditional MnO2 alongside improvements in structural stability. These findings, facilitated by in-situ X-ray absorption near-edge structure (XANES) and ex-situ extended X-ray absorption fine structure (EXAFS) techniques, underscore the potential of PEDOT-MnO2 in advancing the development of manganese-based cathode materials for non-aqueous electrolyte ZIBs. The work represents a crucial advancement in the field of sustainable energy storage solutions, highlighting the role of innovative material design in improving the efficiency and stability of rechargeable battery systems.
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页数:6
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