Carboxylated CNTs loaded CoNiB composite material with Co/Ni ratio of 1: 3 and preparation method and application of carboxylated CNTs loaded CoNiB composite material

The invention discloses a carboxylated CNTs-loaded CoNiB composite material with a Co/Ni ratio of 1: 3, carboxylated CNTs, cobalt chloride hexahydrate, nickel chloride hexahydrate, triethylamine, absolute ethyl alcohol, water and sodium borohydride are used as raw materials, a sodium borohydride in-situ reduction method under an ice water condition is adopted, triethylamine plays a role in pre-anchoring metal to carboxylated CNTs, and the CoNiB composite material is prepared by loading CoNiB on the carboxylated CNTs, cobalt chloride hexahydrate, nickel chloride hexahydrate, triethylamine, absolute ethyl alcohol, water and sodium borohydride. The mass ratio of cobalt chloride hexahydrate to nickel chloride hexahydrate is 1: 3; the microstructure of the obtained material is as follows: CoNiB grows on the surface of carboxylated CNTs, and the carboxylated CNTs penetrate through the whole composite material; the surface area is 70-120 m < 2 > g , and the pore size distribution is 3-5 nm and 30-35 nm. When th