Regulation Engineering of Alkali Metal Interlayer Pillar in P2‑Type Cathode for Ultra‑High Rate and Long‑Term Cycling Sodium‑Ion Batteries (IMAGE)

Shanghai Jiao Tong University Journal Center

Regulation Engineering of Alkali Metal Interlayer Pillar in P2‑Type Cathode for Ultra‑High Rate and Long‑Term Cycling Sodium‑Ion Batteries

Caption

  • A novel “Na–Y” interlayer aggregate is proposed, which acts as a robust interlayer pillar, distinct from previously reported single-ion-based pillar structures.
  • The coexistence of ordered and disordered Na⁺/vacancy states resulting from Cu/Y dual-site doping can stimulate rapid Na⁺ diffusion.
  • The designed Na0.67Y0.05Ni0.18Cu0.1Mn0.67O2 electrode exhibits outstanding long-term cycling performance (~3000 cycles) and high-rate capability (~ 70 mAh g−1 at 50 C).

Credit

Xu Wang, Zixiang Yang, Yujia Cai, Heng Ma, Jinglei Xu, Rabia Khatoon, Zhizhen Ye, Dashuai Wang*, Muhammad Tariq Sajjad*, Jianguo Lu*.

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License

CC BY-NC-ND

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