Preparation and electrochemical performance of MWCNT/MoS2 composite modified Co–P hydrogen storage material

The MoS2 interwoven with multi walled carbon nanotubes (MWCNT/MoS2) composite is synthesized by solvothermal method. The Co–P material is obtained via mechanical alloying. Composites of Co–P coated with MoS2, MWCNT and different amounts of MWCNT/MoS2 are fabricated by ball-milling. Eventually, MWCNT/MoS2 coated Co–P electrode exhibits superior discharge capacity than separate MoS2 or MWCNT modified Co–P and original Co–P. The highest discharge capacity of 653.9 mA h/g is obtained for Co–P + 6% MWCNT/MoS2. The preferable HRD, corrosion resistance and kinetics properties are also achieved after MWCNT/MoS2 loading. Due to the synergistic effect between MoS2 and MWCNT, the Co–P + MWCNT/MoS2 electrode shows improved electrochemical activity and kinetics performance. The high conductive MWCNT and active MoS2 species within the unique structure of MWCNT/MoS2 can further accelerate the hydrogen diffusion during the electrochemical hydrogen storage process.