 A facile single step preparation method of fluorinated MWCNTs and metal ion co-doped gadolinium-doped ceria composite is reported. The fluorination was carried out by hydrothermal method using NaF as a fluorinating agent. Fluorination was confirmed by XPS and powder XRD with representative example F-MWCNT-CeO2−x-Ag. The presence of 21.53 wt% or 18.72 at.% of fluoride was confirmed by EDX mapping along with 12.9 wt% or 1.52 at.% of ceria. Its utilisation in non-gassing electroosmotic pump is reported along with other material like F-MWCNT-CeO2, F-MWCNT-CeO2−x-Pt; F-MWCNT-CeO2−x-Mn and F-MWCNT-CeO2-H2O2. The pump with silver doping showed best performance with 36 μL min−1 cm−2 electroosmotic flux of water. The evaluation of electroosmotic flux in different electrolyte solutions of same concentration follow the trend of hydrated size of ions H+ > Li+ > Na+ > K+. The stability of the pump was evaluated by continuous operation of the pump. The pump was stable till 90% coulombic capacity consumed. To assess the practical utility like use in insulin pump; the assembled electroosmotic pump was operated for five minutes three times a day to mimic the insulin delivery associated with meals. The pump was stable for 200 h within 10% of error suggesting its efficient practical utility.