fig9
![The application of <i>in situ</i> liquid cell TEM in advanced battery research](https://image.oaes.cc/8194a1e7-b7c4-456b-a1f9-a0722c9e89b0/5789.fig.9.jpg)
Figure 9. Understanding oxide formation for Li-O2 and Na-O2 batteries. (A) Li2O2 deposits forming and dissolving during cycling. Reproduced with permission[182]. Copyright 2015, American Chemical Society. (B) NaO2 particle growth and nanocube formation. Reproduced with permission[193]. Copyright 2018, American Chemical Society.