高速率安全钠离子电池用掺铝六氰高铁酸钠锰阴极

IF 4.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-07-31 DOI:10.1039/d5cc03102h

P. Mohana Sundaram , S. K. Vineeth , Soumyashree Das Adhikari , C. Sanjaykumar , P. Sennu , Chhail Bihari Soni , Mahesh Chandra , Sungjemmenla , Hemant Kumar , Vipin Kumar

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引用次数: 0

摘要

六氰高铁酸锰钠（NMHCF）阴极虽然具有很高的放电容量，但由于其不可避免的单斜态、立方态、四方态相变，其放电容量受到限制。研究表明，在NMHCF中掺入铝（Al）可以防止NMHCF的多相形成，并有利于立方相的形成。此外，与原始的NMHCF（~0.75µm）相比，Al掺杂可以形成更小的颗粒尺寸（~0.35µm）和更高的表面积，从而提高了速率动力学。除了稳定立方相外，Al的掺杂还促进了Al掺杂NMHCF （Al-NMHCF）阴极上氟化铝氧（AlOFx）阴极电解质间相（CEI）的形成，认为Al-NMHCF阴极为钠离子电池的安全、高倍率应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

An aluminum-doped sodium manganese hexacyano ferrate cathode for high-rate safe Na-ion batteries†

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An aluminum-doped sodium manganese hexacyano ferrate cathode for high-rate safe Na-ion batteries†

Aluminum (Al) doping in sodium manganese hexa-cyano-ferrate (NMHCF) stabilizes the cubic phase and suppresses multiphase formation. Doping reduces the particle size (∼0.35 μm), catalyzing the rate kinetics. Further Al-doping promotes aluminum-oxy-fluoride formation at the cathode electrolyte interphase for water in salt electrolytes, enabling safer, high-rate Na-ion battery performance.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.