Building Stable Anodes for High‐Rate Na‐Metal Batteries

Abstract Due to low cost and high energy density, sodium metal batteries (SMBs) have attracted growing interest, with great potential to power future electric vehicles (EVs) and mobile electronics, which require rapid charge/discharge capability. However, the development of high‐rate SMBs has been impeded by the sluggish Na + ion kinetics, particularly at the sodium metal anode (SMA). The high‐rate operation severely threatens the SMA stability, due to the unstable solid‐electrolyte interface (SEI), the Na dendrite growth, and large volume changes during Na plating‐stripping cycles, leading to rapid electrochemical performance degradations. This review surveys key challenges faced by high‐rate SMAs, and…

• NN
  National Natural Science Foundation of China

  Award: 52002094
• SS
  Shenzhen Science and Technology Innovation Program

  Awards: RCBS20210706092218040, JSGG202108021253804014, JCYJ20210324121411031