In the investigation of the next-generation battery anode, Li metal has attracted increasing attention owing to its ultrahigh specific capacity and low reduction potential. However, its low columbic efficiency, limited cycling life, and serious safety hazards have hindered the practical application of rechargeable Li metal batteries. Although several strategies have been proposed to enhance the electrochemical performance of Li metal anodes, most are centered around ether-based electrolytes, which are volatile and do not provide a sufficiently large voltage window. Therefore, we aimed to attain stable Li deposition/stripping in a commercial carbonate-based electrolyte. Herein, we have successfully synthesized hydrogen titanate (HTO) nanowire arrays decorated with homogenous Ag nanoparticles (NPs) (Ag@HTO) via simple hydrothermal and silver mirror reactions. The 3D cross-linked array structure with Ag NPs provides preferable nucleation sites for uniform Li deposition, and most importantly, when assembled with the commercial LiNi_0.5Co_0.2Mn_0.3O₂ cathode material, the Ag@HTO could maintain a capacity retention ratio of 81.2% at 1 C after 200 cycles, however the pristine Ti foil failed to do so after only 60 cycles. Our research therefore reveals a new way of designing current collectors paired with commercial high voltage cathodes that can create high energy density Li metal batteries.

在下一代电池负极的研究中，锂金属由于其超高的比容量和低还原电位而引起了越来越多的关注。然而，其低的哥伦布效率，有限的循环寿命以及严重的安全隐患阻碍了可再充电锂金属电池的实际应用。尽管已经提出了几种提高Li金属阳极电化学性能的策略，但大多数策略都围绕着醚基电解质，后者易挥发且不能提供足够大的电压窗口。因此，我们旨在在商用碳酸盐基电解质中实现稳定的Li沉积/剥离。在这里 我们已经通过简单的水热和银镜反应成功地合成了装饰有均相Ag纳米粒子（NPs）（Ag @ HTO）的钛酸氢（HTO）纳米线阵列。具有Ag NP的3D交联阵列结构为均匀的Li沉积提供了理想的成核位点，最重要的是，当与商用LiNi组装时_在0.5 Co _0.2 Mn _0.3 O ₂正极材料下，Ag @ HTO在200次循环后在1 C时仍可保持81.2％的容量保持率，而纯净的Ti箔仅在60次循环后仍未这样做。因此，我们的研究揭示了一种设计集电器与商业高压阴极配对的新方法，这种阴极可以产生高能量密度的锂金属电池。