Regulation of hydrogen evolution performance of titanium oxide–carbon composites at high current density with a Ti–O hybrid orbital

Rational design and controllable synthesis of practical electrodes with high stability activity at current density for a hydrogen evolution reaction (HER) are critical renewable sustainable energy conversion. However, high-performance TiO2-based electrocatalysts HER quite limited, the catalytic active centers still remain elusive. Herein, simple strategy is demonstrated TiO2–carbon composite (TiO2/C) performance stability. The remarkable TiO2/C can be ascribed to doping carbon atoms, which leads stronger hybridization Ti 3d O 2p orbitals, thus substantially improving electrocatalytic efficiency. This study elucidates that oxide largely improved by regulating their electronic structures atoms also provides an effective designing heterostructured HER.