期刊
ELECTROCHIMICA ACTA
卷 295, 期 -, 页码 569-576出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.10.178
关键词
Lithium/thionyl chloride battery; Cobalt tetrapyridinoporphyrazine; Voltage platform; Active sites
资金
- 973 Special Preliminary Study Plan [2014CB26041]
- Shaanxi Natural Science Foundation of China [2017JM5006]
- Shaanxi University of Science and Technology [XSD1445]
- State Key Laboratory of Solidification Processing in NWPU [SKLSP201617]
- Provincial Key Academic Leaders Scientific Research Foundation of Shaanxi University of Science and Technology [BJ15-01]
- youth talent support program Shaanxi University of Science and Technology [2016QNBJ-08]
- National Natural Science Foundation of China [51572158]
- Graduate Innovation Fund of Shaanxi University of Science and Technology
Commercial lithium/thionyl chloride (Li/SOCl2) batteries cannot meet the 3.15 V platform required for most instruments. A hovenia acerba-like assembly constructed with cobalt tetrapyridinoporphyrazine of thickness of 5-15 nm is anchored on acid-functionalized multi-walled carbon nanotubes (CoTAP/MWCNTs), which were prepared using an in situ solid synthesis process. The discharge time of Li/SOCl2 batteries with a voltage greater than 3.15 V catalyzed by CoTAP/MWCNTs is found to be 11 min longer than batteries without catalysts and 4 min longer than those catalyzed by CoTAP alone. The energy of Li/SOCl2 batteries with a voltage greater than 3.15 V catalyzed by CoTAP/MWCNTs is discovered to be 11.44-times higher than batteries with AF-MWCNTs and 6.17-times higher than those catalyzed by bulk CoTAP. This is due to the fact that more CoTAP ultrafine nanoparticulates are anchored on the AF-MWCNTs. These nanoparticulates provide more active sites for the catalytic reaction of SOCl2. The assemblies are shown to have an adsorption-coordination effect on Li ions and to delay the deposition of lithium chloride passive films enhancing battery voltage platforms. (C) 2018 Published by Elsevier Ltd.
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