Fig. 3: Physical and mechanical characterizations of co-rolled film and interface. | Nature Communications

Fig. 3: Physical and mechanical characterizations of co-rolled film and interface.

From: Robust interface and reduced operation pressure enabled by co-rolling dry-process for stable all-solid-state batteries

Fig. 3

a Flexibility test of co-rolled film. b Tensile strength measurement of SSE and positive electrode freestanding films and co-rolled film. Data are presented as mean values with standard deviation, n = 5 independent replicates. c Comparison of SSE binder content and SSE thickness with other published works on dry-processed SSE film35,46,47,48,49,50. d Peel-off test of freestanding films after lamination. e Side-view SEM image of freestanding films. f Schematic of freestanding films showing partially attached SSE-positive electrode interface and limited interface adhesion. g Peel-off test of co-rolled film. h Side-view SEM image of co-rolled film. i Schematic of co-rolled film showing binder-VGCF network and improved interface adhesion. j Schematic illustrating shearing effect on the interface: binder fibrillation and contact formation. k SEM images and l schematics of freestanding and co-rolled films showing heterogenous interface and fused interface, respectively, after press. Yellow spheres represent SSE and gray spheres represent CAM. Source data are provided as a Source Data file.

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