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Koppisetti HVSRM, Rao H, Ramasamy HV, Inta HR, Das S, Kim S, Zhang Y, Wang H, Mahalingam V, Pol V. Sustainable Enhanced Sodium-Ion Storage at Subzero Temperature with LiF Integration. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37379525 DOI: 10.1021/acsami.3c03386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Though layered sodium oxide materials are identified as promising cathodes in sodium-ion batteries, biphasic P3/O3 depicts improved electrochemical performance and structural stability. Herein, a coexistent P3/O3 biphasic cathode material was synthesized with "LiF" integration, verified with X-ray diffraction and Rietveld refinement analysis. Furthermore, the presence of Li and F was deduced by inductively coupled plasma-optical emission spectrometry (ICP-OES) and energy dispersive X-ray spectroscopy (EDS). The biphasic P3/O3 cathode displayed an excellent capacity retention of 85% after 100 cycles (0.2C/30 mA g-1) at room temperature and 94% at -20 °C after 100 cycles (0.1C/15 mA g-1) with superior rate capability as compared to the pristine cathode. Furthermore, a full cell comprising a hard carbon anode and a biphasic cathode with 1 M NaPF6 electrolyte displayed excellent cyclic stabilities at a wider temperature range of -20 to 50 °C (with the energy density of 151.48 Wh kg-1) due to the enhanced structural stability, alleviated Jahn-Teller distortions, and rapid Na+ kinetics facilitating Na+ motion at various temperatures in sodium-ion batteries. The detailed post-characterization studies revealed that the incorporation of LiF accounts for facile Na+ kinetics, boosting the overall Na storage.
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Affiliation(s)
- Heramba Venkata Sai Rama Murthy Koppisetti
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Harsha Rao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Hari Vignesh Ramasamy
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Harish Reddy Inta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Sayan Das
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Soohwan Kim
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Yizhi Zhang
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Haiyan Wang
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Venkataramanan Mahalingam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Vilas Pol
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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Xu K, Yan M, Chang YX, Xing X, Yu L, Xu S. Surface optimized P2-Na2/3Ni1/3Mn2/3O2 cathode material via conductive Al-doped ZnO for boosting sodium storage. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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