Synergistic effects of nanoarchitecture and oxygen vacancy in nickel molybdate hollow sphere towards a high‐performance hybrid supercapacitor

The facile design and fabrication of nanoarchitectured binary transition metal oxide electrode materials are essentially required for the advancement of high-performance supercapacitors (SCs). Herein, we prepared an oxygen-vacant NiMoO4 (Ov-NiMoO4) hollow sphere via a simple hydrothermal approach and subsequent heat treatment under an argon atmosphere. In particular, the oxygen vacancy is confirmed by using X-ray diffraction (XRD),...