Exfoliation and modulation of intercalated layered transition metal carbides and/or nitrides (MAX) into their derivatives (MXenes) featured with manipulable structural chemistry by remain enormous challenges toward practical applications. Herein, an extraordinary low-dimensional MXenes modulated by dual-ultrasmall Sb and SbO nanodots via in situ structural editing protocol using Lewis-basic fluorides in organic molten salts. Their original internal non-van der Waals bonds and physicochemical natures are simultaneously mediated by manipulating fluorine anions and antimony cations as chemical scissors generating into zero- and one-dimensional MXenes (MFNCTS-Z, MFNCTS-O) encapsulated by hierarchical porous N-doped carbon. Experimental and theoretical results manifest MFNCTSs as alternative dual-functional hosts toward both sulfur (S) cathode and lithium (Li) anode modulating bidirectional kinetics originated from their synergistic effect of physical confinement and chemical anchor effect accelerating polysulfides redox chemistry, and homogeneous lithium deposition. As a result, the assembled lithium-sulfur full batteries offer impressive electrochemical performances. This work paves a new avenue for developing low-dimensional MXenes by controllable structural editing strategy toward practical energy conversion and storage fields.

中文翻译：

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双超小型 Sb 和 Sb6O13 纳米点共锚定 MXene，具有可操纵的结构化学调节双向动力学，用于先进的锂硫电池

将插层层状过渡金属碳化物和/或氮化物（MAX）剥离和调制成具有可操纵结构化学特征的衍生物（MXenes）仍然是实际应用面临的巨大挑战。在此，利用有机熔盐中的路易斯碱性氟化物，通过原位结构编辑协议，由双超小 Sb 和 SbO 纳米点调制了一种非凡的低维 MXene。它们最初的内部非范德华键和物理化学性质是通过操纵氟阴离子和锑阳离子作为化学剪刀同时介导的，生成零维和一维MXenes（MFNCTS-Z，MFNCTS-O），由分层多孔N掺杂封装碳。实验和理论结果表明，MFNCTS 作为硫（S）阴极和锂（Li）阳极的替代双功能主体，调节双向动力学，这源于它们的物理限制和化学锚定效应加速多硫化物氧化还原化学和均匀锂沉积的协同效应。因此，组装的锂硫全电池具有令人印象深刻的电化学性能。这项工作为通过可控结构编辑策略开发低维 MXenes 走向实用的能量转换和存储领域开辟了一条新途径。