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Koroni C, Dixon K, Barnes P, Hou D, Landsberg L, Wang Z, Grbic’ G, Pooley S, Frisone S, Olsen T, Muenzer A, Nguyen D, Bernal B, Xiong H. Morphology and Crystallinity Effects of Nanochanneled Niobium Oxide Electrodes for Na-Ion Batteries. ACS Nanosci Au 2024; 4:76-84. [PMID: 38406314 PMCID: PMC10885328 DOI: 10.1021/acsnanoscienceau.3c00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 02/27/2024]
Abstract
Niobium pentoxide (Nb2O5) is a promising negative electrode for sodium ion batteries (SIBs). By engineering the morphology and crystallinity of nanochanneled niobium oxides (NCNOs), the kinetic behavior and charge storage mechanism of Nb2O5 electrodes were investigated. Amorphous and crystalline NCNO samples were made by modulating anodization conditions (20-40 V and 140-180 °C) to synthesize nanostructures of varying pore sizes and wall thicknesses with identical chemical composition. The electrochemical energy storage properties of the NCNOs were studied, with the amorphous samples showing better overall rate performance than the crystalline samples. The enhanced rate performance of the amorphous samples is attributed to the higher capacitive contributions and Na-ion diffusivity analyzed from cyclic voltammetry (CV) and the galvanostatic intermittent titration technique (GITT). It was found that the amorphous samples with smaller wall thicknesses facilitated improved kinetics. Among samples with similar pore size and wall thickness, the difference in their power performance stems from the crystallinity effect, which plays a more significant role in the resulting kinetics of the materials for Na-ion batteries.
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Affiliation(s)
- Cyrus Koroni
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Kiev Dixon
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Pete Barnes
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
- Energy
Storage and Electric Vehicle Department, Idaho National Laboratory, Idaho
Falls, Idaho 83401, United States
| | - Dewen Hou
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
- Center
for Nanoscale Materials, Argonne National
Laboratory, Lemont, Illinois 60439, United
States
| | - Luke Landsberg
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Zihongbo Wang
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Galib Grbic’
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Sarah Pooley
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Sam Frisone
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Tristan Olsen
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Allison Muenzer
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Dustin Nguyen
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Blayze Bernal
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
| | - Hui Xiong
- Micron
School of Materials Science & Engineering, Boise State University, Boise, Idaho 83725, United States
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