Voltage hysteresis as the toughest challenge hampers the development of Lattice Oxygen Redox (LOR) in high-energy density positive electrode. Finding out the decisive factor in voltage hysteresis of LOR is crucial for suppressing the irreversibility at its source. Herein, starting from the discovery of the plateau hysteresis in ribbon-ordered Na-deficient Transition Metal Oxides (Na-deficient-TMOs) in Li half cells, we reveal that the alkali ion coordination environments of O control the voltage hysteresis by affecting oxygen orbital energy level maldistribution. The prismatic site is more advantageous to the uniform distribution of oxygen orbitals. This work provides an essential component for understanding voltage hysteresis and emphasizes the importance of alkali metal site doping for designing high-voltage oxygen redox materials with low voltage hysteresis.

中文翻译：

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棱柱形碱离子环境抑制晶格氧氧化还原反应中的平台滞后

电压迟滞是阻碍高能量密度正极中晶格氧氧化还原（LOR）发展的最严峻挑战。找出LOR电压迟滞的决定性因素对于从源头上抑制不可逆性至关重要。在此，从Li半电池中带状有序缺钠过渡金属氧化物（Na-deficient-TMO）的平台滞后现象的发现出发，我们揭示了O的碱离子配位环境通过影响氧轨道来控制电压滞后现象。能量水平分布不均。棱柱位点更有利于氧轨道的均匀分布。这项工作为理解电压滞后提供了重要组成部分，并强调了碱金属位点掺杂对于设计具有低电压滞后的高压氧氧化还原材料的重要性。