2,500 W kg⁻¹ at 5 C suggests that the electrolyte and cathode interfacial resistance are sufficiently low (< 10 mΩ cm²). The inclusion of a solid‑state electrolyte often hampers high‑rate performance; the reported SPS‑processed S‑SIC appears to overcome this.
A co‑precipitation method produces a homogeneous hydroxide precursor, followed by high‑temperature solid‑state reaction (≈ 800 °C, 12 h) in a flowing oxygen–fluorine mixed atmosphere (O₂ + CF₄). Post‑synthesis, the particles are milled to an average size of 200 nm, then surface‑coated with a thin (∼ 5 nm) Li₃PO₄ layer via atomic layer deposition (ALD) to protect against electrolyte decomposition. nhdtb-178
NHES employed the following rigorous methodology: 2,500 W kg⁻¹ at 5 C suggests that
