• MVOH/rGO cathode with dual defect of Mg²⁺ pre-intercalation defect (P-Mg_d) and surface oxygen defect (O_d) is prepared.

• The dual defect of O_d and P-Mg_d in MVOH/rGO lamellar structure effectively enhances Mg²⁺ migration kinetics, structural stability, and electronic conductivity.

• The Mg foil//MVOH/rGO full cell achieves an ultralong lifespan of 850 cycles at 0.1 A g⁻¹ and powers an orange light-emitting diode.

中文翻译：

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双缺陷工程策略实现高耐用性可充电镁金属电池

• 制备了具有Mg ²⁺预插层缺陷(P-Mg _d )和表面氧缺陷(O _d )双重缺陷的MVOH/rGO阴极。

• MVOH/rGO层状结构中O _d和P-Mg _d的双重缺陷有效增强了Mg ²⁺迁移动力学、结构稳定性和电子电导率。

• ^{Mg箔//MVOH/rGO全电池在0.1 A g -1}下实现了850次循环的超长寿命，并为橙色发光二极管供电。