Zero-strain high entropy spinel oxide (FeNiCuCrMn)3O4@rGO as high-performance anode for sodium ion battery
Journal Article
·
· Chemical Engineering Journal
- China Univ. of Mining and Technology, Xuzhou, Jiangsu (China)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Central South University, Changsha (China)
High entropy spinel oxides (HEOs), as a new type of anode material with at least five transition metal elements and high theoretical specific capacity, have enormous promise in sodium ion batteries (SIBs). However, the influence of different transition metal elements on the structure and electrochemical performances of HEOs is not clear. Here, in this study, the addition of Mn to HEO can increase the surface oxygen vacancy (Ov) concentration, shorten the band gap, and enhance the electrochemical performance of (FeNiCuCrMn)3O4@rGO. XPS results show (FeNiCuCrMn)3O4@rGO has the highest surface Ov concentration. Ab initio calculations demonstrate that the indirect band gap of (FeNiCuCrMn)3O4@rGO is 0.068 eV. In situ X-ray diffraction and synchrotron X-ray absorption spectroscopy reveal that (FeNiCuCrMn)3O4@rGO exhibits a zero-strain characteristic with an inconsequential unit cell volume change of 0.2 %. Specifically, (FeNiCuCrMn)3O4@rGO as anode materials for SIBs show good cyclic stability (with a capacity retention of 84 % at 500 mA g−1 after 3000 cycles). Overall, this work provides a new direction for optimizing transition metal elements in HEOs.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 2569476
- Alternate ID(s):
- OSTI ID: 2480372
OSTI ID: 2574351
- Report Number(s):
- BNL--228290-2025-JAAM
- Journal Information:
- Chemical Engineering Journal, Journal Name: Chemical Engineering Journal Vol. 503; ISSN 1385-8947
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic properties of the Ising-like rare earth pyrosilicate: D-Er2Si2O7
Na4Fe1.5Mn1.5(PO4)2(P2O7): A low-cost and earth-abundant cathode for robust sodium storage
Journal Article
·
Mon Aug 02 00:00:00 UTC 2021
· Journal of Physics. Condensed Matter
·
OSTI ID:1817385
Na4Fe1.5Mn1.5(PO4)2(P2O7): A low-cost and earth-abundant cathode for robust sodium storage
Journal Article
·
Fri Mar 08 00:00:00 UTC 2024
· Materials Today Energy
·
OSTI ID:2569777