Sputtered silver on the current collector for anode-less NMC111 gel polymer electrolyte lithium batteries

Autor: Tien-Hsiang Hsueh, Min-Chuan Wang, Shang-En Liu, Bo-Hsien Wu, Yu-Chen Li, Ding-Guey Tsai, Shu-Mei Chang, Angus Shiue, Kai-Yen Chin
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Electrochemistry Communications, Vol 150, Iss , Pp 107478- (2023)
Druh dokumentu: article
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2023.107478
Popis: The anode-less lithium battery with the structure of lithium nickel manganese cobalt oxide (LiNi0.33Mn0.33Co0.33O2, NMC111) /gel polymer electrolyte (GPE)/silver (Ag)/ conductive carbon black (CCB) coated aluminum current collectors has been proposed for high energy density in this research. The results indicate that the anode-less lithium battery on Ag/CCB-coated aluminum current collector has a sufficient discharge capacity of 0.935 mAh/cm2 and exhibited capacity retention of 86.1 % after 30 cycles of the charge–discharge test. This 1st lower coulombic efficiency (discharge capacity/charge capacity × 100 %) only goes to 46.8 % due to the Li-Al alloying reaction, and part of the lithium ions reacted with the GPE, CCB, and aluminum current collector during the 1st cycle of the anode-less NMC111 lithium battery. These accompanying reactions consumed the Li ions and resulted in the irreversible capacity in the 1st cycle. However, the coulombic efficiency has increased to about 96.2 % after the 1st cycle test. This result indicates that most of the charge–discharge cycles reacted in a reversible capacity, and the anode-less NMC111 lithium battery has the potential for high energy density application.
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