Fig. 5: Microstructural deformation of room temperature (RT)-pressed and 80 °C-pressed sulfur-carbon (S-C) composite electrodes during electrochemical cycling (areal sulfur loading: 3 mgS cm−2, 1 C = 1675 mA gS−1, testing temperature: 25 °C). | Nature Communications

Fig. 5: Microstructural deformation of room temperature (RT)-pressed and 80 °C-pressed sulfur-carbon (S-C) composite electrodes during electrochemical cycling (areal sulfur loading: 3 mgS cm−2, 1 C = 1675 mA gS−1, testing temperature: 25 °C).

From: Binding properties of sulfur to enable solvent-free fabrication of high-performance polymer-free sulfur-carbon positive electrodes

Fig. 5: Microstructural deformation of room temperature (RT)-pressed and 80 °C-pressed sulfur-carbon (S-C) composite electrodes during electrochemical cycling (areal sulfur loading: 3 mgS cm−2, 1 C = 1675 mA gS−1, testing temperature: 25 °C).

a Voltage profiles of the initial charge-discharge processes at 0.1 °C within a cell voltage range of 1.8–2.7 V at 25 °C during the in situ optical microscopy (OM) experiment, with an enlarged view of the first 10% Depth of discharge (DOD) highlighted (yellow). b OM images captured during the first discharge at DOD 0, 2, 5, 7, 8, and 10%. Ex situ scanning electron microscopy (SEM) images of c the RT-pressed and d 80 °C-pressed positive electrodes after five cycles at 0.2 °C, highlighting structural differences. Schematic illustrations depicting the structure of e the RT-pressed and f 80 °C-pressed positive electrodes before and after cycling.

Back to article page