Understanding High-Voltage Behavior of Sodium-Ion Battery Cathode Materials Using Synchrotron X-ray and Neutron Techniques: A Review
Abstract
:1. Introduction
2. Brief Overview of Synchrotron Radiation
3. Brief Overview of Neutron Technology
4. Layered Oxide Cathode Materials
5. Polyanion Compounds
6. Prussian Blue Analogue and Organic Materials
7. Conclusions and Perspectives
- Investigating CEI in high-voltage polyanion-type cathode: Investigations into the CEI of polyanion-type cathode materials have attracted substantial interest. However, most of the reported results in this area are from lab-based characterizations, which suggests that there is plenty of scope for applying synchrotron X-ray and neutron scattering techniques. As a successful example, the use of synchrotron-based soft XAS with both FY and TEY mode was able to reveal the transition metal activity in the CEI of layered transition metal oxide cathodes. More similar advanced techniques are encouraged for application in the investigation of the CEI of high-voltage polyanion-type cathodes to obtain more insights with the hope of extending cell lifetime;
- Extending neutron scattering techniques: In the research area of high-voltage SIB cathode materials, ND has been widely used to study the bulk structure of layered transition metal oxide cathodes and polyanion-type cathodes. There remains wide scope for using neutron scattering techniques in CEI studies. SANS is a powerful tool for obtaining the size and shape information of materials at the nanometer scale which has been successfully used in studying the chemical nature, morphology, and size evolution of the solid–electrolyte interphase (SEI) in LIBs [117,118]. Neutron reflection testing is able to probe the structure and kinetics at the materials’ interphase by detecting the reflected intensity as a function of angle, which has been used to study the structure and composition gradients of SEI in LIBs [119,120]. These successful examples from LIBs suggest the possibility of involving these neutron-scattering-based techniques in SIB CEI studies from different perspectives;
- Exploring new techniques: To accelerate the understanding of the SIB cathode’s behavior at high voltage, more synchrotron-X-ray- and neutron-based complementary techniques are needed to obtain a more complete picture of the material’s structure, dynamics, and electrochemical behavior. For example, the introduction of dark-field X-ray microscopy [121] could complement TXM in characterizing material morphology by enhancing contrast with selective detection of scattered X-rays. Especially, dark-field X-ray microscopy [121] is highly sensitive to surface features, which could provide valuable information about the interphase morphology. Due to the sensitivity to the dynamic behavior of nanoscale features, the use of X-ray photon correlation spectroscopy (XPCS) could provide information about the movement and fluctuations of nanoparticles and crystal domains [122,123]. This is important for understanding working ion diffusion, phase transitions, and structural heterogeneities or defects on the nanosecond to microsecond timescales;
- Bridging materials characterizations to electrode performance: Although there have been substantial efforts towards understanding high-voltage SIB cathode materials using synchrotron X-ray and neutron scattering techniques, it is challenging to directly link the materials characterization results with the electrode, as well as cell device performance partially due to the disconnection between morphology and phase characterization. One finds it is difficult to perform transmission microscopy and diffraction for the same batch of particles to obtain morphology and phase change information simultaneously. It would be ideal if we could collect morphology and structural phase information for a controllable number of particles at the same time in the near future. By studying the behavior of these particles statistically, one could establish a model to predict the electrode performance with the aid of artificial intelligence, which could also guide the selection of the materials synthesis methodology.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Material | Electrolyte | Temperature | Cycling Rate | Voltage Range | Cycling No. Until 80% Capacity Retention | Ref. |
---|---|---|---|---|---|---|
Na0.5Cu0.15Ni0.2Mn0.65O2/Na | 1M NaClO4 in PC + 5%FEC | Room temperature | 1000 mA/g | 3–4.2 V | 1000 | [53] |
Na0.66Ni0.26Zn0.07Mn0.67O2/Na | 1M NaClO4 in PC + 2%FEC | Room temperature | 12 mA/g | 2–4.4 V | 30 | [54] |
NaxNi1/3Co1/3Mn1/3O2/Na | 1M NaPF6 in PC + 2%FEC | Room temperature | 0.5C | 2–4.4 V | 100 | [55] |
Na0.67Ni0.23Mn0.67Mg0.1O2/Na | 1M NaClO4 in PC + 5%FEC | Room temperature | 0.1C | 2–4.5 V | 100 | [56] |
Na2/3[(Ni0.5Zn0.5)0.3Mn0.7]O2/Na | 0.5M NaPF6 in PC + 2%FEC | Room temperature | 0.1C | 2.3–4.6 V | >200 | [57] |
Na0.6-xCaxNi1/3Mn1/3Co1/3O2/Na | 1M NaPF6 in EC/DEC 1/1 + 3%FEC | Room temperature | 200 mA/g | 2.5–4.2 V | ~100 | [58] |
Ru-substituted Na0.6MnO2/hard carbon | 1M NaClO4 in PC + 5%FEC | Room temperature | 100 mA/g | 1.5–4.4 V | 50 | [59] |
Na0.67Ni0.19Cu0.14Mn0.52Ti0.15O2/Na | 1M NaClO4 in EC/DEC 1/1 + 5%FEC | Room temperature | 0.1C | 2–4.5 V | 100 | [60] |
Material | Electrolyte | Temperature | Cycling Rate | Voltage Range | Cycling No. Until 80% Capacity Retention | Ref. |
---|---|---|---|---|---|---|
NaVOPO4//Na | 1M NaClO4 in EC/DEC 1/1 | Room temperature | 0.5C | 2–4.2 V | 1000 | [86] |
Na3V2(PO4)2F3/Na | 1M NaClO4 in EC/DEC 1/1 + 5%FEC | Room temperature | 10C | 2.5–4.5 V | >1000 | [87] |
Na2Fe(C2O4)SO4⋅H2O/Na | 1M NaClO4 in PC + 3%FEC | Room temperature | 0.2C | 1.7–4.2 V | 500 | [88] |
Na1.4Fe1.3P2O7/Na | 1M NaClO4 in EC/PC 1/1 + 5%FEC | Room temperature | 1C | 1.5–4.2 V | 650 | [89] |
Na2VTi(PO4)2F3/Na | NaPF6 in PC/EC/DMC 1/1/1 | Room temperature | 0.1C | 3–4.4 V | >100 | [90] |
Na3MnZr(PO4)3/Na | 1M NaClO4 in PC/FEC 9/1 | Room temperature | 0.5C | 2.5–4.2 V | >500 | [91] |
Na4MnCr(PO4)3/Na | 1M NaClO4 in PC/FEC 9/1 | Room temperature | 10C | 1.5–4.3 V | >500 | [92] |
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Shipitsyn, V.; Jayakumar, R.; Zuo, W.; Sun, B.; Ma, L. Understanding High-Voltage Behavior of Sodium-Ion Battery Cathode Materials Using Synchrotron X-ray and Neutron Techniques: A Review. Batteries 2023, 9, 461. https://doi.org/10.3390/batteries9090461
Shipitsyn V, Jayakumar R, Zuo W, Sun B, Ma L. Understanding High-Voltage Behavior of Sodium-Ion Battery Cathode Materials Using Synchrotron X-ray and Neutron Techniques: A Review. Batteries. 2023; 9(9):461. https://doi.org/10.3390/batteries9090461
Chicago/Turabian StyleShipitsyn, Vadim, Rishivandhiga Jayakumar, Wenhua Zuo, Bing Sun, and Lin Ma. 2023. "Understanding High-Voltage Behavior of Sodium-Ion Battery Cathode Materials Using Synchrotron X-ray and Neutron Techniques: A Review" Batteries 9, no. 9: 461. https://doi.org/10.3390/batteries9090461