The advantages of lithium-metal batteries (i.e., a higher energy density and a smaller size) are known for over decades. However, these batteries have been so far non-rechargeable and have been known to burst into flame. These two characteristics stem from the reaction which takes place between the lithium metal and the battery’s electrolyte. This reaction not only produces compounds which increase the resistance in the battery and reduce the cycle life, but also forms mossy lithium-metal bumps on the anode which leads to short circuits. A short circuit generates high heat and ignites the flammable electrolyte. In order to suppress lithium dendrite formation, the formation of lithium needles needs to be prevented. This means that either the surface energy of the substrate must be completely homogenous, or the atom mobility must be reduced. There is no way that either of above mention can act as one antidote for lithium dendrite, but being a trade-offs instead. Eventually, a well distribution electro field and stable SEI having good ion conversion efficiency are both the keystone to the lithium anode preventing from dendrite formation and poor coulombic efficiency.