Decoupling the air sensitivity of Na-layered oxides

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-08-15 DOI:10.1126/science.adm9223

Yang Yang, Zaifa Wang, Congcong Du, Bowen Wang, Xinyan Li, Siyuan Wu, Xiaowei Li, Xiao Zhang, Xubin Wang, Yaoshen Niu, Feixiang Ding, Xiaohui Rong, Yaxiang Lu, Nian Zhang, Juping Xu, Ruijuan Xiao, Qinghua Zhang, Xuefeng Wang, Wen Yin, Junmei Zhao, Liquan Chen, Jianyu Huang, Yong-Sheng Hu

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引用次数: 0

Abstract

Air sensitivity remains a substantial barrier to the commercialization of sodium (Na)–layered oxides (NLOs). This problem has puzzled the community for decades because of the complexity of interactions between air components and their impact on both bulk and surfaces of NLOs. We show here that water vapor plays a pivotal role in initiating destructive acid and oxidative degradations of NLOs only when coupled with carbon dioxide or oxygen, respectively. Quantification analysis revealed that reducing the defined cation competition coefficient (η), which integrates the effects of ionic potential and sodium content, and increasing the particle size can enhance the resistance to acid attack, whereas using high-potential redox couples can eliminate oxidative degradation. These findings elucidate the underlying air deterioration mechanisms and rationalize the design of air-stable NLOs.

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解耦 Na 层氧化物的空气敏感性。

空气敏感性仍然是钠（Na）层状氧化物（NLOs）商业化的一大障碍。由于空气成分之间相互作用的复杂性及其对 NLOs 体积和表面的影响，这个问题几十年来一直困扰着业界。我们在此表明，水蒸气只有分别与二氧化碳或氧气结合时，才能在引发 NLO 的破坏性酸降解和氧化降解方面发挥关键作用。定量分析显示，降低定义的阳离子竞争系数（η）（该系数综合了离子电位和钠含量的影响）和增大颗粒尺寸可以增强耐酸性，而使用高电位氧化还原偶联剂则可以消除氧化降解。这些发现阐明了潜在的空气劣化机制，并使空气稳定 NLO 的设计更加合理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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