Carbon materials are widely used in lithium-ion batteries (LIBs) due to their high performance, safety, and reliability, along with low cost and easy availability. However, the low lithium storage capability of bare carbon materials limits the further improvement of the capacity of LIBs. Here, we report a facile self-poring strategy for the synthesis of trace amounts of ZnO quantum dots (QDs) (∼5 nm) embedded in highly porous carbon nanosheets by using the metal centers of a Zn-based metal-organic ligand structure as a pore-creating agent. Benefiting from the synergistic functions of nanostructuring, heterocomponent doping, and QDs effects, the as-prepared materials deliver superior lithium storage properties in comparison with the existing carbon-based materials—2,300 mAh g⁻¹ at 0.2 A g⁻¹, ∼600 mAh g⁻¹ at 10 A g⁻¹, and ∼700 mAh g⁻¹ after 3,000 cycles at 5 A g⁻¹—and are promising candidates for next-generation high-capacity LIB electrodes.

碳材料由于其高性能，安全性和可靠性以及低成本和易用性而被广泛用于锂离子电池（LIB）。但是，裸碳材料的低锂存储能力限制了LIB容量的进一步提高。在这里，我们报告了一种利用锌基金属有机配体结构的金属中心作为内嵌在高度多孔的碳纳米片中的痕量ZnO量子点（QDs）（〜5 nm）的简便自穿孔策略。造孔剂。得益于纳米结构，异质元素掺杂和QD效应的协同作用，与现有的碳基材料相比，所制备的材料具有出色的锂存储性能-0.2A g ^-1下为2,300 mAh g ^-1，〜600毫安克^-1以10 A G ^-1，和~700毫安克^-1后5 A G 3000次循环^-1 -and是有希望的下一代高容量LIB电极候选。