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Defect-free-induced Na+disordering in electrode materials

Journal Article


Abstract


  • For reaching high-performance of electrode materials, it is generally believed that understanding the structure evolution and heterogeneous alignment effect is the key. Presently, a very simple and universally applicable self-healing method is investigated to prepare defect-free Prussian blue analogs (PBAs) that reach their theoretical capacity as cathode materials for sodium-ion batteries (SIBs). For direct imaging of the local structure and the dynamic process at the atomic scale, we deliver a fast ion-conductive nickel-based PBA that enables rapid Na+ extraction/insertion within 3 minutes and a capacity retention of nearly 100% over 4000 cycles. This guest-ion disordered and quasi-zero-strain nonequilibrium solid-solution reaction mechanism provides an effective guarantee for realizing long-cycle life and high-rate capability electrode materials that operate via reversible two-phase transition reaction. Unconventional materials and mechanisms that enable reversible insertion/extraction of ions in low-cost metal-organic frameworks (MOFs) within minutes have implications for fast-charging devices, grid-scale energy storage applications, material discovery, and tailored modification.

UOW Authors


  •   Peng, Jian (external author)
  •   Peng, Jian (external author)
  •   Chou, Shulei (external author)

Publication Date


  • 2021

Citation


  • Peng, J., Ou, M., Yi, H., Sun, X., Zhang, Y., Zhang, B., . . . Han, J. (2021). Defect-free-induced Na+disordering in electrode materials. Energy and Environmental Science, 14(5), 3130-3140. doi:10.1039/d1ee00087j

Scopus Eid


  • 2-s2.0-85104696370

Start Page


  • 3130

End Page


  • 3140

Volume


  • 14

Issue


  • 5

Place Of Publication


Abstract


  • For reaching high-performance of electrode materials, it is generally believed that understanding the structure evolution and heterogeneous alignment effect is the key. Presently, a very simple and universally applicable self-healing method is investigated to prepare defect-free Prussian blue analogs (PBAs) that reach their theoretical capacity as cathode materials for sodium-ion batteries (SIBs). For direct imaging of the local structure and the dynamic process at the atomic scale, we deliver a fast ion-conductive nickel-based PBA that enables rapid Na+ extraction/insertion within 3 minutes and a capacity retention of nearly 100% over 4000 cycles. This guest-ion disordered and quasi-zero-strain nonequilibrium solid-solution reaction mechanism provides an effective guarantee for realizing long-cycle life and high-rate capability electrode materials that operate via reversible two-phase transition reaction. Unconventional materials and mechanisms that enable reversible insertion/extraction of ions in low-cost metal-organic frameworks (MOFs) within minutes have implications for fast-charging devices, grid-scale energy storage applications, material discovery, and tailored modification.

UOW Authors


  •   Peng, Jian (external author)
  •   Peng, Jian (external author)
  •   Chou, Shulei (external author)

Publication Date


  • 2021

Citation


  • Peng, J., Ou, M., Yi, H., Sun, X., Zhang, Y., Zhang, B., . . . Han, J. (2021). Defect-free-induced Na+disordering in electrode materials. Energy and Environmental Science, 14(5), 3130-3140. doi:10.1039/d1ee00087j

Scopus Eid


  • 2-s2.0-85104696370

Start Page


  • 3130

End Page


  • 3140

Volume


  • 14

Issue


  • 5

Place Of Publication