Despite much research focused on lithium (Li) metal batteries, an important issue concerning Li-dendrite growth on the anode remains unresolved. The intrinsic mechanism of this Li-dendrite formation is related to the non-uniform distribution of Li-ion flux on the anode in charge/discharge caused by irregular structure and energy of anode surface. Here we report upon dendrite-free Li-deposition in a carbonate-based electrolyte using a novel Cu anode structure with sharp wrinkles and a [100] crystal facet. This uniform Li-deposition resulted in long-term electrochemical cyclability in Li/Cu and LiFePO₄/Li cell. Our observations revealed that the wrinkled Cu surface and the unifying [100] crystal facet play important roles in enhancing the uniformity of the Li-ion flux and the adsorption energy of the Li-ions on Cu, respectively. We expect that this study will permit the use of a wide range of wrinkled structures and crystal planes to obtain high-energy and long-term cycles of Li-metal batteries.

尽管对锂（Li）金属电池进行了大量研究，但有关阳极上Li-枝晶生长的重要问题仍未解决。锂枝晶形成的内在机理与由于阳极表面的不规则结构和能量引起的锂离子通量在充电/放电时在阳极上的不均匀分布有关。在这里，我们报告了使用新型铜阳极结构（具有明显的皱纹和[100]晶面）在碳酸盐基电解质中的无枝晶锂沉积。这种均匀的锂沉积导致Li / Cu和LiFePO ₄的长期电化学循环能力/ Li单元格。我们的观察表明，起皱的Cu表面和统一的[100]晶面分别在增强Li离子通量的均匀性和Li离子在Cu上的吸附能方面起着重要作用。我们希望这项研究将允许使用多种起皱的结构和晶面，以获得高能量和长期循环的锂金属电池。