Various two-dimensional (2D) structures cause different catalytic anisotropy based on the stack layers in Li-oxygen batteries (LOBs). Clarify the key factor for catalytic performance of 2D materials in LOBs is necessary. In this study, 2D structured Bi₂Te₃ with five Te-Bi atom layers in its stack layers is applied as the cathode catalyst for LOBs. Hexagonal nanodisks and roller-like nanoparticles are prepared for exposed controlling crystal plane by simple one-step hydrothermal method. It reveals the stack surface (001) plane can provide outstanding catalytic capability with high conductivity after the adsorption of discharge products and efficient pathway for the conversion from LiO₂ to Li₂O₂ and prevent the formation of by-products. As consequence, a superior specific capacity of 21,172 mAh g⁻¹ and high cycling stability of 188 cycles at 500 mA g⁻¹ are achieved. The corresponding catalytic mechanism of Bi₂Te₃ mainly originates from its stack surface derived homogenous electronic state and high conductivity.

基于锂氧电池（LOB）中的堆叠层，各种二维（2D）结构会导致不同的催化各向异性。阐明 LOB 中二维材料催化性能的关键因素是必要的。在这项研究中，在其堆叠层中具有五个 Te-Bi 原子层的二维结构 Bi ₂ Te ₃被用作 LOB 的阴极催化剂。通过简单的一步水热法制备了用于暴露控制晶面的六角形纳米盘和辊状纳米颗粒。它揭示了电堆表面（001）平面在吸附放电产物后可以提供出色的催化能力和高电导率，并为从LiO ₂转化为Li ₂ O _{2提供有效途径}并防止副产品的形成。因此，实现了 21,172 mAh g ^{-1的优异比容量和 500 mA g -1}下 188 次循环的高循环稳定性。_{Bi 2} Te ₃的相应催化机理主要源于其堆表面衍生的均质电子态和高导电性。