Efforts towards Practical and Sustainable Li/Na-Air Batteries

• 作者: Kai Chen Gang Huang Xin-Bo Zhang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Chemistry Author Up Close
• 页码范围: 32-42
• 页数: 11页
• 语种: 英文
• DOI: 10.1002/cjoc.202000408

摘要

The Li-O2 batteries have attracted much attention due to their parallel theoretical energy density to gaso-line.In the past 20 years,understanding and knowledge in Li-O2 battery have greatly deepened in elucidat-ing the relationship between structure and performance.Our group has been focusing on the cathode en-gineering and anode protection strategy development in the past years,trying to make full use of the supe-riority of metal-air batteries towards applications.In this review,we aim to retrospect our efforts in devel-oping practical,sustainable metal-air batteries.We will first introduce the basic working principle of Li-O2 batteries and our progresses in Li-O2 batteries with typical cathode designs and anode protection strategies,which have together promoted the large capacity,long life and low charge overpotential.We emphasize the designing art of carbon-based cathodes in this part along with a short talk on all-metal cathodes.The fol-lowing part is our research in Na-O2 batteries including both cathode and anode optimizations.The differ-ences between Li-O2 and Na-O2 batteries are also briefly discussed.Subsequently,our proof-of-concept work on Li-N2 battery,a new energy storage system and chemistry,is discussed with detailed information on the discharge product identification.Finally,we summarize our designed models and prototypes of flex-ible metal-air batteries that are promising to be used in flexible devices to deliver more power.