Recent Development of Aprotic Na−O2 Batteries. Issue 9 (28th June 2019)

• Record Type: Journal Article
• Authors: Zhao, Shuo; Qin, Bin; Chan, Kwong‐Yu; Li, Chi‐Ying Vanessa; Li, Fujun
• Is Part Of: Batteries & supercaps. Volume 2:Issue 9(2019)
• Page Start: 725
• Page End: 742
• Publication Date: 2019-06-28
• Subjects: sodium-oxygen batteries -- sodium metal protection -- sodium superoxide -- solution-precipitation -- superoxide crossover; Electrochemistry -- Periodicals; Electrodes -- Periodicals; Electric batteries -- Periodicals; 621.31242
• DOI: 10.1002/batt.201900015
• Languages: English
• ISSNs: 2566-6223

Abstract

Abstract: The development of batteries with high energy density and low costs involves chemistry beyond lithium‐ion batteries. Rechargeable sodium‐oxygen (Na−O2 ) batteries make two essential steps forward: i) replacing Li by Na to remove the bottleneck in resources supply and ii) using oxygen from air to raise the theoretical energy density. A lot of progress has been made in performance and understanding of Na−O2 battery since its first report in 2012. However, there remain significant challenges, such as the instability of discharge products, dendrite growth of Na metal, and the crossover of superoxide. A timely review is given here to summarize the challenges encountered in the components of the Na−O2 battery. Insights are offered on sodium anode protection, morphology dynamics at the cathode, amphibian presence of superoxide, and the roles of electrolyte. Bright prospects in further development of aprotic Na−O2 batteries are envisioned. Abstract : The review discusses the recent advance in aprotic Na−O2 batteries. The challenges encountered in battery components are summarized, including dendrite growth, superoxide crossover, instability of discharge products and so on. Insights are offered on sodium anode protection, morphology dynamics at the cathode, amphibian presence of superoxide, and the roles of electrolyte. Bright prospects in further development of aprotic Na−O2 batteries are envisioned.