Acta Chim. Sinica ›› 2017, Vol. 75 ›› Issue (2): 199-205.DOI: 10.6023/A16070329 Previous Articles     Next Articles

Special Issue: 先进电池材料



李冉, 卢艳莹, 雷凯翔, 李福军, 程方益, 陈军   

  1. 南开大学 化学学院 先进能源材料化学教育部重点实验室 化学化工协同创新中心 天津 300071
  • 投稿日期:2016-07-07 修回日期:2016-09-30 发布日期:2016-10-10
  • 通讯作者: 程方益,;Fax:022-23509571
  • 基金资助:


Resumption of the Discharged Li-AgVO3 Primary Batteries for Rechargeable Li-O2 Batteries

Li Ran, Lu Yanying, Lei Kaixiang, Li Fujun, Cheng Fangyi, Chen Jun   

  1. Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education), College of Chemistry, Nankai University;Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
  • Received:2016-07-07 Revised:2016-09-30 Published:2016-10-10
  • Contact: 10.6023/A16070329
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21322101, 21231005), Ministry of Education (No. 113016A) and 111 Project (No. B12015).

Recycling use is one of the energy and resource saving strategies to dispose depleted batteries, especially primary lithium batteries that employ electrode materials based on expensive and low-abundance elements. In this study, we report in detail the recycling use of discharged Li-AgVO3 primary battery for rechargeable Li-O2 battery. We demonstrate that the discharged Li-AgVO3 cell, in which metallic silver nanoparticles in-situ generated in the vanadium oxide nanowires cathode efficiently catalyze the oxygen reduction/evolution reactions (ORR/OER), can be resumed as rechargeable Li-O2 cells when they are exposed at O2 atmosphere. By controlling the discharge depths, we obtained different cathodes that were composed of vanadium oxide nanowires and silver nanoparticles. As the electrode was discharged to a lower voltage, more silver nanoparticles with larger particle size were distributed on the surface of vanadium oxides, as a result of the sequential reduction of Ag+ to Ag0 and V5+ to V4+. Specifically, the average size of formed Ag nanoparticles was 15 nm and 70 nm at ceased discharge voltage of 2.9 V and 2.0 V, respectively, while the formation of V4+ was observed at discharge voltage lower than 2.3 V. Electrochemical tests indicated that the Li-O2 cells assembled with the AgVO3 cathode discharged to 2.3 V (AgVO3-2.3) exhibited the highest specific capacity (9000 mAh·gcarbon-1), the lowest overpotential and robust cycling performance (up to 95 cycles at the current density of 300 mA·gcarbon-1). The remarkable electrochemical performance of the Li-O2 battery with the AgVO3-2.3 cathode is attributed to the optimization of amount, size and distribution of generated silver nanoparticles that contribute to high electronic conductivity and abundant active sites for the ORR/OER. A combined analysis of electrochemical impedance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy confirmed that the AgVO3-2.3 cathode enables the reversible formation and decomposition of Li2O2 with lower charge transfer resistance on discharge and charge. The results presented here would provide new insight into the promising recycling application of depleted primary Li-AgVO3 batteries in rechargeable high-capacity Li-O2 batteries.

Key words: silver vanadium oxide, silver nanoparticles, lithium primary battery, Li-oxygen battery, recycling use, oxygen reduction/evolution