In this work, we investigate electrodeposition process that forms and takes place on the surface and inside of metal electrodes at real time. By employing a microfluidic cell and the capability for liquid flow, we can introduce electrolytes (i.e. 8.9M KOH + 0.61M ZnO or 0.5M H2SO4 + 0.1M ZnSO4) with varying composition of metal ions, pH and chemical additives (i.e. Bi2O3 or PbSO4), and apply different current and voltage parameters to investigate their effects on the deposited morphology. We employ in situ correlative light and transmission X-ray microscopies to track nucleation, growth, and propagation of Zn dendrites. We also discuss the effects of additives to the electrolyte, which can change the onset of dendrite formation during the electrodeposition of Zn. We also compare these microfluidic cell results to liquid cell electron microscopy experiments in which we have recorded Zn morphology after galvanostatic deposition, and we will discuss the benefits and pitfalls of the correlative microscopy technique for the study of processes during battery operation.
 Y. Li & H. Dai. Chem. Soc. Rev. 43, 5257–5275 (2014).
 Z.-L. Wang, D. Xu, J.-J. Xu, & X.-B. Zhang. Chem. Soc. Rev. 43, 7746–7786 (2014).
 J. W. Gallaway, D. Desai, A. Gaikwad, C. Corredor, S. Banerjee, & D. Steingart. J. Eectrochem. Soc. 157, A1279–A1286 (2010).
 C. P. Grey & J. M. Tarascon. Nat. Mater. 16, 45–56 (2017).
 N. Hodnik, G. Dehm, & K. J. J. Mayrhofer. Acc. Chem. Res. 49, 2015–2022 (2016).
 We gratefully acknowledge funding supports from the BP Carbon Mitigation Initiative.