<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Phase‐pure [Li<sub>0.85</sub>Fe<sub>0.15</sub>OH][FeS] is prepared by hydrothermal reaction of Fe, (NH<sub>2</sub>)<sub>2</sub>CS, and LiOH (autoclave, 200 °C, 3 d).</p> </abstract>