Solid-state sodium batteries with P2-type Mn-based layered oxides by utilizing anionic redox

文献情報

出版日 2023-12-28

DOI 10.1039/D3TA05790A

インパクトファクター 12.732

著者

Steven Kmiec, Panawan Vanaphuti, Arumugam Manthiram

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要旨

Recently, P2-type manganese-based sodium layered cathodes have gained considerable attention as a viable option for grid-scale energy storage due to their high natural abundance, low cost, and high specific capacity from both cationic and anionic redox activity. We report here a solid-state battery with a cobalt/nickel-free layered Na0.72Li0.24Mn0.75Si0.01O2 cathode, sodium bis(fluorosulfonyl)imide (NaFSI)-based polymer composite solid electrolyte (CSE), and a sodium-metal anode. Electrochemical measurements confirm both reversible cationic (Mn-redox) and anionic (O-redox) can be achieved in solid-state sodium metal batteries (SSNMBs) with a CSE and layered Na0.72Li0.24Mn0.75Si0.01O2 cathode. Solid-state cells were found to achieve a maximum specific capacity of 180 mA h g−1 with capacity retention of 72% after 50 cycles at C/2 rate at 1.50–4.50 V at 60 °C. Post mortem analysis reveals capacity fade can be primarily attributed to an increase in cell polarization at the cathode-electrolyte interphase (CEI), specifically oxidation/degradation of the infiltrated solid polymer electrolyte. To improve the cycle performance, the oxidative stability of a solid-electrolyte with the high-voltage cathode needs to be considered to minimize the formation of resistive CEI layers, which limit capacity utilization. Altogether, this work provides a promising strategy to utilize anionic redox-based cathodes in solid-state batteries, which in turn can aid the development of practically viable SSNMBs.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Solid-state sodium batteries with P2-type Mn-based layered oxides by utilizing anionic redox

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Journal of Materials Chemistry A

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