Skip to main content
placeholder image

Structurally Stable Ni(OH)2 Composite with Super Long-term Cycling Life for Aqueous High-performance Supercapacitor

Journal Article


Abstract


  • We synthesized an electrochemical structurally stable composite electrode, containing Ni-doped Co(CO3)0.5OH ⋅ 0.11H2O nanoneedles and nanoflake-/nanofrustum-like Ni(OH)2 with highly hydrophilic group, leading to enhanced rare performance. The electrode exhibits an outstanding ultra-long cycle life of more than 140,000 cycles. Specially, the assembled aqueous hybrid supercapacitor presents more than 80 % capacity retention even after 170,000 cycles and high energy density of 44.5 Wh kg−1. This work highlights a feasible strategy to design and develop high-efficiency electrodes via engineering on composition and nanostructure.

UOW Authors


  •   Bai, Zhongchao (external author)
  •   Wang, Nana

Publication Date


  • 2022

Citation


  • Wang, H., Guo, C., Ren, X., Zhang, Y., Shi, Q. X., Bai, Z., & Wang, N. (2022). Structurally Stable Ni(OH)2 Composite with Super Long-term Cycling Life for Aqueous High-performance Supercapacitor. Electroanalysis, 34(8), 1256-1265. doi:10.1002/elan.202100576

Scopus Eid


  • 2-s2.0-85124512291

Start Page


  • 1256

End Page


  • 1265

Volume


  • 34

Issue


  • 8

Abstract


  • We synthesized an electrochemical structurally stable composite electrode, containing Ni-doped Co(CO3)0.5OH ⋅ 0.11H2O nanoneedles and nanoflake-/nanofrustum-like Ni(OH)2 with highly hydrophilic group, leading to enhanced rare performance. The electrode exhibits an outstanding ultra-long cycle life of more than 140,000 cycles. Specially, the assembled aqueous hybrid supercapacitor presents more than 80 % capacity retention even after 170,000 cycles and high energy density of 44.5 Wh kg−1. This work highlights a feasible strategy to design and develop high-efficiency electrodes via engineering on composition and nanostructure.

UOW Authors


  •   Bai, Zhongchao (external author)
  •   Wang, Nana

Publication Date


  • 2022

Citation


  • Wang, H., Guo, C., Ren, X., Zhang, Y., Shi, Q. X., Bai, Z., & Wang, N. (2022). Structurally Stable Ni(OH)2 Composite with Super Long-term Cycling Life for Aqueous High-performance Supercapacitor. Electroanalysis, 34(8), 1256-1265. doi:10.1002/elan.202100576

Scopus Eid


  • 2-s2.0-85124512291

Start Page


  • 1256

End Page


  • 1265

Volume


  • 34

Issue


  • 8