Fig. 2: Na nucleation and growth on different substrates.
From: A nanotwinned-alloy strategy enables fast sodium deposition dynamics
a, e, i Schematic illustration of Na plating onto different collectors. The silver, gray, blue and pink denote deposited Na, Al matrix, nano-Si and nanotwinned-Si, respectively. In the atomic model diagram, dark blue spheres and light blue spheres represent Si and Al atoms, respectively. b–d Spherical Na deposited on HPJH-AlSi collector in different electrolytes. f–h Uneven Na deposited on HPA-AlSi collector in different electrolytes. j–l Dendritic Na deposited on Al collector in different electrolytes. The Na deposited morphologies on different collectors was measured after plating at a current density of 1 mA cm−2 and a deposition capacity of 0.1 mAh cm−2.
