Breakthrough in Sodium Batteries: Gradient Anode Enables 200 Wh kg-1 Energy Density and Dendrite-Free Cycling (IMAGE)
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Figure 2. Electrochemical test of GNS/Na||NVP and Pure Na||NVP. Long-term cycling performances (a) and rate performances (b) of GNS/Na||NVP and Pure Na||NVP cells. Mass loading of NVP is 2.0 mg cm-2, with lean electrolyte. (c) Long-term cycling performances of GNS/Na||NVP and Pure Na||NVP cells. Mass loading of NVP is 30 mg cm-2, with flooded electrolyte. (d) Long-term cycling performance of GNS/Na||NVP cell. Mass loading of NVP is 30 mg cm-2, with lean electrolyte. Voltage profiles of the Pure Na||NVP (e) and GNS/Na||NVP (f) cells at various current rates. (g) Comparation of full cells of recently reported Na batteries in ether-based electrolytes.
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