In the present work, Zn-doped MnCO3 i.e., Mn1−xZnxCO3 (x=0to0.3) have been successfully synthesized by easy and commercial co-precipitation method at atmospheric pressure and temperature. The structural, morphological, chemical, and thermal properties of as-synthesized samples were examined by XRD, FESEM, EDX, XPS, FTIR and TGA techniques. Rietveld refinements of XRD patterns reveal the successful incorporation of Zn in the crystal lattice of MC (MnCO3). Further, the Li-storage performance of all the samples have been examined from 0.005 to 3.0 V vs. Li/Li+ by GCD at a constant current rate of 60 mA·g−1 and CV measurement techniques. The result shows that MZC-2 (Mn0.8Zn0.2CO3) exhibits a better Li-storage performance with the reversible capacity of 667 (±10) mA·h·g−1 and better cyclic stability at least for 100 cycles and superior rate performance. A plausible charge storage mechanism is proposed based on ex-situ XRD and TEM analysis. The results indicate the contribution of both the alloying-de-alloying and conversion reaction of Zn. Incorporation of Zn into MnCO3 have been found beneficial to stabilize the cyclability of MnCO3.