2.1.2 Preparation of NiSe2
In
a typical synthesis, the selenium powder (1.56 g) was first dissolved in
6 mL hydrazine hydrate and 54 mL deionized water and ultrasonic
treatment for 30 min. Then, nickel nitrate hexahydrate (2.88 g) was
joined into the above solution and drastic stirred for 30 min. The
resultant suspension was heat-treated at 180oC for 24
h.
The subsequent processing steps are consistent with preparation of MCS.