Cation-Exchange-Derived Wurtzite-Type Cobalt Sulfide Nanocrystal Improves Both Onset Potential and Photocurrent of Hematite Photoanode for Efficient Solar Water Splitting.
Hematite (α-Fe2O3) photoanode material holds significant promise for practical applications. However, its performance is severely limited by low photocurrent density (Jph) and high onset potential (Von). Although high-valence metal doping can boost Jph, it usually shifts Von positively. Herein, we report an unconventio...