Long-Alkyl-Chain Phosphonium Surfactant Molecular Wrapping to Block Oxygen Impurities in n-Type Carbon Nanotubes for Thermoelectric Applications
Long-Alkyl-Chain Phosphonium Surfactant Molecular Wrapping to Block Oxygen Impurities in n-Type Carbon Nanotubes for Thermoelectric Applications
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DOI：
10.1021/acsaenm.2c00264
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发表时间：
2023-02
期刊：
影响因子：
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通讯作者：
Shinichi Hata;Fumiyasu Kitano;Hiroki Ihara;T. Murayama;Yukou Du;Y. Shiraishi;N. Toshima
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文献类型：
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作者：
Shinichi Hata;Fumiyasu Kitano;Hiroki Ihara;T. Murayama;Yukou Du;Y. Shiraishi;N. Toshima
在一些电子应用中，含有n型碳纳米管（CNT）的组件在恶劣环境或高温下对大气氧化的不稳定性是一个重要的问题。在这里，我们报道了一个密集的分子包裹的n-型碳纳米管与鏻盐减少了79%的暴露的CNT表面，并抑制了CNT表面上的氧的亲电反应。在353 K下老化28 d后，其热电功率因数保持在初始值的89%（290.3 μW m-1 K-2）。这为n型材料在高温电子器件中的应用开辟了新的途径。
In several electronics applications, the instability of components containing n-type carbon nanotubes (CNTs) to atmospheric oxidation in harsh environments or high temperatures is a significant concern. Here, we reported that a dense molecular wrapping of n-type CNTs with phosphonium salts reduced the exposed CNT surface by 79% and suppressed the electrophilic reaction of oxygen on the CNT surface. After aging at 353 K for 28 days, 89% of its initial thermoelectric power factor was retained (290.3 μW m–1K–2). This opens new avenues for the use of n-type materials in high-temperature electronics.