采用丁二腈拓宽Li/CFx一次电池的使用温度范围

1 Introduction

Lithium primary batteries (LPBs) are widely used in portable devices, medical electronics and military installations due to the advantages of high energy density, environmental adaptability and long storage life [1-2]. Compared with other LPBs, such as Li/SO2 and Li/MnO2 batteries, carbon materials make Li/CFx primary batteries possessing the advantage of high theoretical specific capacity     (865 mA·h/g), high energy density (2180 W·h/kg), low self-discharge rate, and stable voltage platform   [3-5]. However, lithium ions (Li+) migrate slowly in traditional electrolyte and CFx cathode, which results in the poor electrochemical performance at low temperature [6]. Therefore, exploring appropriate widen-temperature electrolyte for Li/CFx batteries become one of the research hotspots [7-8].