Figure 2. Low to high magnification SEM of PM CST anodes heat-treated at 700 °C (a,b), 900 °C (c,d), and 1100 °C (e,f) (scale bars for (a–f), respectively: 100 μm, 10 μm, 50 μm, 10 μm, 100 μm, and 10 μm).
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