Innovative design of dual functional polypyrrole-coated zinc cobalt sulfide nanosheets on carbon cloth as a binder-free anode of sodium-ion batteries
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Xiao C.-Y., Kubendhiran S., Wang G.-B., Kongvarhodom C., Chen H.-M., Yougbaré S., Saukani M., Wu Y.-F., Lin L.-Y.
ผู้เผยแพร่: Elsevier
ปีที่เผยแพร่ (ค.ศ.): 2024
Volume number: 91
นอก: 2352-152X
eISSN: 2352-1538
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
Sodium-ion battery (SIB) is attractive and cost-effective for energy storage due to the high abundance of sodium. Anodes with complex electrochemical mechanisms significantly impact the performance and safety of battery systems. In recent times, cobalt-based binary metal sulfides have received enormous attention in energy storage applications. However, high volume expansion, limited cycle life, and low initial Coulombic efficiency are major problems of SIB in a practical application perspective. Herein, a novel binder-free electrode is designed by synthesizing polypyrrole-coated zinc cobalt sulfide nanosheets on carbon cloth (PPy/ZnCoS@CC) as the anode of SIB via a hydrothermal process for the first time. The PPy coating on the ZnCoS surface is to control the volume expansion and solve the long-term stability issue. The thickness of PPy on ZnCoS is controlled by using different polymerization reaction times. The optimal PPy/ZnCoS@CC electrode demonstrates a high areal capacity of 2.33 mAh/cm2 at 0.1 mA/cm2 and retains 75% of the areal capacity after 100 cycles. The galvanic intermittent titration technique analysis is also used to measure the diffusion coefficient of anodes. This work brings a blueprint on enhancing the conducing property and control the volume expansion during the charge-discharge process by coating conductive polymer on metallic compounds. © 2024 Elsevier Ltd
คำสำคัญ
Areal capacity, Long-term stability, Sodium-ion battery, Volume expansion, Zinc cobalt sulfide
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