Major Contributions
 

1. 1,3-Diaminoguanidine (DG) preintercalation into hydrated V₂O₅ (VOH) introduces charge shielding and distorts [VO₆] octahedra, modulating electronic conductivity and enhanced Zn²⁺ diffusion despite reduced interlayer spacing.

2. DG preintercalation effectively suppresses detrimental H⁺ co-intercalation, alleviating lattice strain, vanadium dissolution, and byproduct formation—the key degradation mechanisms in aqueous Zn-ion batteries.

3. DG-VOH achieves 437.8 mAh/g specific capacity with 91% retention after 5000 cycles at 8 A/g, establishing organic molecular preintercalation as a highly effective cathode engineering strategy for high-performance AZIBs.

主要貢獻
 

1. 將 1,3-二氨基胍（DG）預嵌入水合 V₂O₅（VOH）層間引入電荷屏蔽並扭曲 [VO₆] 八面體，在層間距縮小的情況下仍調節電子導電率並增強 Zn²⁺ 擴散。

2. DG 預嵌入有效抑制有害的 H⁺ 共嵌入，緩解晶格應變、釩溶解與副產物生成——水系鋅離子電池的關鍵衰退機制。

3. DG-VOH 在 8 A/g 下 5000 次循環後保持 91% 容量保持率，比容量達 437.8 mAh/g，確立有機分子預嵌入為高性能水系鋅離子電池的高效正極工程策略。