fig2
From: Design of manganese dioxide for supercapacitors and zinc-ion batteries: similarities and differences
![Design of manganese dioxide for supercapacitors and zinc-ion batteries: similarities and differences](https://image.oaes.cc/079ae441-6d1e-4da3-af7d-a0702043cdeb/5321.fig.2.jpg)
Figure 2. Crystal structures of (A) α-, (B) β-, (C) γ-, (D) δ- and (E) amorphous MnO2. Reproduced with permission[26]. Copyright 2019, Royal Society of Chemistry.