  We present a comprehensive investigation of the superconducting properties of
ZrRe2, a Re-based hexagonal Laves compounds. ZrRe2 crystallizes in a C14-type
structure (space group P63/mmc), with cell parameters a=b=5.2682(5) and
c=8.63045 . Resistivity and magnetic susceptibility data both suggest that
ZrRe2 exhibits a sharp superconducting transition above 6.1 K. The measured
lower and upper critical fields are 6.27 mT and 12.77 T, respectively, with a
large upper critical field that approached the Pauli limit.Measurements of the
heat capacity confirm the presence of bulk superconductivity, with a normalized
specific heat change of 1.24 and an electron-phonon strength of 0.69 . DFT
calculations revealed that the band structure of ZrRe2 is intricate and without
van-Hove singularity. The observed large specific heat jump, combined with the
electron-phonon strength , suggests that ZrRe2 is a weakly coupled type II
superconductor.
