"Pinning Effect" mitigating Jahn-Teller distortion of manganese-rich phosphate cathodes in sodium-ion batteries

"Pinning Effect" mitigating Jahn-Teller distortion of manganese-rich phosphate cathodes in sodium-ion batteries | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 12 November 2025 V1 Latest version Share on "Pinning Effect" mitigating Jahn-Teller distortion of manganese-rich phosphate cathodes in sodium-ion batteries Authors : Zihao Yang , Dongzhu Liu , Yongtao Ma , Xuexia Song , Jingjing Wang , Yanyan Cao , Zhaowen Chen , … Show All … , Xuan Yang , Jiangtao Wang , Xiangyang Xie , Wei Huang , Yukun Xi , Ningjing Hou , Xiaoxue Wang , Wenbin Li , and Xifei Li 0000-0001-9857-6793 [email protected] Show Fewer Authors Info & Affiliations https://doi.org/10.22541/au.176299040.00007030/v1 172 views 103 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The manganese-iron-based mixed polyanionic cathode material has gradually garnered considerable attention due to its high energy density and notable operating voltage advantages for sodium-ion batteries (SIBs). However, the Jahn-Teller distortion caused by Mn3+ significantly impairs the cyclic stability of this material. Herein, a structural modulation strategy involving Mg2+ doping is employed. The electrochemically inert Mg2+ forms stronger chemical bonds, adjusts lattice parameters, and suppresses Jahn-Teller distortion, thereby markedly enhancing the structural stability of the cathode material for sodium-ion batteries. Moreover, Mg2+ further enhances the diffusion kinetics by widening the sodium-ion diffusion channels. In addition, the construction of an in-situ three-dimensional conductive network of carbon nanotubes (CNTs) significantly improves the electronic conductivity. As a result, this material exhibits a discharge-specific capacity of 126 mAh g-1 at 0.1C, which is close to the theoretical capacity (129 mAh g-1), and maintains high-capacity cyclic stability (80% after 3000 cycles) at 0.5C. Furthermore, the system delivers an impressively high energy density (401 Wh kg⁻¹), a value that stands among the highest reported so far in mixed phosphate systems. Therefore, the novel manganese-iron-based mixed polyanionic cathode material developed in this work holds great potential for large-scale energy storage applications. Supplementary Material File (manuscripts.docx) Download 6.17 MB Information & Authors Information Version history V1 Version 1 12 November 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords jahn-teller distortion manganese-iron-based polyanionic cathode Authors Affiliations Zihao Yang Xi'an University of Technology View all articles by this author Dongzhu Liu Xi'an University of Technology View all articles by this author Yongtao Ma Xi'an University of Technology View all articles by this author Xuexia Song Shaanxi University of Science and Technology View all articles by this author Jingjing Wang Xi’an University of Technology View all articles by this author Yanyan Cao Xi’an University of Technology View all articles by this author Zhaowen Chen Harbin Institute of Technology View all articles by this author Xuan Yang Xi'an University of Technology View all articles by this author Jiangtao Wang Xi'an University of Technology View all articles by this author Xiangyang Xie Xi'an University of Technology View all articles by this author Wei Huang Xi'an University of Technology View all articles by this author Yukun Xi Xi’an University of Technology View all articles by this author Ningjing Hou Xi'an University of Technology View all articles by this author Xiaoxue Wang Xi'an University of Technology View all articles by this author Wenbin Li Xi’an University of Technology View all articles by this author Xifei Li 0000-0001-9857-6793 [email protected] Xi'an University of Technology View all articles by this author Metrics & Citations Metrics Article Usage 172 views 103 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Zihao Yang, Dongzhu Liu, Yongtao Ma, et al. "Pinning Effect" mitigating Jahn-Teller distortion of manganese-rich phosphate cathodes in sodium-ion batteries. Authorea . 12 November 2025. DOI: https://doi.org/10.22541/au.176299040.00007030/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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