Abstract Wires formed of densified as-received and purified commercially available Carbon Nanotube (CNT) sheet material as well as a laid CNT wire were tested for long-term stability in a saltwater environment under an applied electrical bias. Tafel electrochemical measurements showed increased chemical stability for the CNT samples over copper, with the corrosion resistance of CNT samples showing further improvement after purification. Under constant DC voltage biases of 2.50 V, CNT materials show improvements in failure time by as much as 108 times over comparable diameter copper wires, with further improvement over copper at lower applied voltages due to material stability and an absence of gas evolution. Shear forces resulting from gas formation was found to significantly contribute to the failure of CNT wires at elevated voltages compared to chemical corrosion typical in copper wires.

中文翻译：

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在电偏压下增强 CNT 线的盐水稳定性

摘要 测试由致密的原样和纯化的市售碳纳米管 (CNT) 片材以及铺设的 CNT 线形成的导线在盐水环境中在施加电偏压下的长期稳定性。Tafel 电化学测量显示 CNT 样品的化学稳定性比铜更高，CNT 样品的耐腐蚀性在纯化后进一步提高。在 2.50 V 的恒定直流偏压下，CNT 材料的失效时间比可比直径的铜线缩短了 108 倍，由于材料稳定性和不产生气体，在较低的施加电压下比铜线进一步改进。