Thermodynamic parametrization of dark energy

We propose a new parametrization of dark energy motivated by thermodynamics. To this aim, we consider Padé polynomials to reconstruct the form deceleration parameter adequate describe different epochs cosmic history and divergence-free in far future. The proposed scenario also fulfils demand structure formation contains ?CDM model as limiting case. Thus, numerical analysis at both background perturbation levels is performed through Markov Chain Monte Carlo method view most recent data. then use observational constraints explore features evolution compare our findings with predictions standard cosmological model.