Energy Storage Science and Technology ›› 2016, Vol. 5 ›› Issue (5): 702-712.doi: 10.12028/j.issn.2095-4239.2016.0056

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Progress in rechargeable solid-state Li-air batteries

ZHANG Tao, ZHANG Xiaoping, WEN Zhaoyin   

  1. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2016-08-01 Online:2016-09-01 Published:2016-09-01

Abstract:  The theoretical specific energy of lithium-air battery is as high as 3505 W•h/kg. The practical specific energy of this electrochemical energy storage system is estimated to be able to 600 W•h/kg, which is a promising value to sustain a driving range of 500~800 kilometers for electric vehicles. Currently lithium-air batteries are facing various challenges, such as stability associated with decomposition of carbon-based cathodes and electrolytes, low electric energy efficiency and power density, questionable applicability due to the common operation environment just in pure oxygen, and the safety issues related to lithium dendrites and so on, in particular, the ability whether can be operated in ambient air or not. Developing solid-state lithium-air batteries can solve the problem of applicability fundamentally, circumvent the safety issues completely, and which is also an important avenue to improve the stability of the battery system. In this paper, we reviewe the progress on the cell construction, the regulation of the electron/electrolyte interface, the cell assembly, the electrochemical performance and the mechanism for the solid-state lithium-air batteries. In every section, the contributions of the recent research progress on the SEAS challenges and the still remained questions will be commented. Based on these review, we attempt to propose some alternative approaches for the next stage, and suggest a development prospective for the solid-state lithium-air batteries.

Key words: solid-state Li-air batteries, solid-state Li-ion conducting electrolyte, complex air cathode, Li metal-based anode, interface regulation