In the present era, the development of flexible nanogenerators with outstanding performance, portability, and sustainable energy conversion efficiency is of the utmost importance. The flexible piezoelectric nanogenerator is at present a promising option because of its exceptional mechanical qualities, good environmental versatility, and high energy harvesting efficiency. It can be incorporated with wireless sensors and personal electronics to realise sustainable energy for long-term operation. In that field of endeavour, piezo-polymers are an emerging material in the competitive marketplace due to their low cost, minimal manufacturing difficulty, and flexibility. One of the most extensively researched and economically feasible piezoelectric polymers is poly (vinylidene fluoride) (PVDF). PVDF is a semicrystalline polymer that exhibits five distinct crystalline polymorphs, namely α, β, γ, δ and ε. Among these, the β and γ polymorphs are the polar or electroactive phases due to their high net dipole moment per unit volume. To exploit the maximum potential of PVDF for ferroelectric, pyroelectric, and piezoelectric applications, the polar phases (β and/or γ) of PVDF need to be enhanced, as they exhibit higher piezoelectric coefficients. To enhance the fraction of the polar phase in PVDF, a variety of techniques, such as stretching, annealing, and poling, have been used. It has also been reported that adding fillers to PVDF is a successful and feasible way to induce the polar phase. My work focuses on the effect of adding 2D nanomaterials to the PVDF matrix upon the ferroelectric and piezoelectric characteristics of PVDF nanocomposites along with detailed investigation of the associated mechanical, rheological, and piezoelectric properties with subsequent sensor and device fabrication for greater sustainability and industrial purposes.