期刊
ACS OMEGA
卷 3, 期 9, 页码 12195-12200出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.8b01369
关键词
-
资金
- French National Research Agency (STORE-EX Labex Project) [ANR-10-LABX-76-01]
The electrochemical alloying of lead-based electrodes with potassium was investigated by galvanostatic measurements as well as by ex situ and operando X-ray diffraction. The electrochemical reduction must be activated by an initial high current pulse which prevents the passivation of the lead electrode. The alloying process leads to the formation of crystalline KPb. During the discharge, two intermediate phases are observed, K10Pb48 and K4Pb9, whereas only K4Pb9 seems to form during the charge. High capacity retention is observed, with, however, a limited specific capacity value because of high weight of lead.
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