The Chemically Deposited Sn Combines with the TiO2 3D Reticular Structure to Form a Stable and Uniform Lithium Metal Anode

Lithium metal anode is one of the ideal anodes with high energy density. However, the problems of lithium dendrite growth and infinite volume expansion lead to safety and cycling stability problems in lithium metal anode batteries, which became the biggest obstacle to the commercial application of lithium metal anodes. This paper reports a three-dimensional nanostructured TiO2 flexible lithium metal anode scaffold loaded with Sn. Three-dimensional nanostructured TiO2 has a high specific surface area that can accommodate lithium deposition with high capacity while suppressing lithium dendrite growth. At a current density of 1 mA cm−2 and a deposition volume of 5 mAh cm−2, the 35th circulate coulomb efficiency of the lithium metal anode scaffold is still 98