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Contribution of Ultrahigh Electrochemical Performance of NiCo2O4 Nanoneedle-Based Free-Standing Electrode from Functionalized Carbon Cloth
Nano ( IF 1.0 ) Pub Date : 2020-11-25 , DOI: 10.1142/s179329202050160x
Shi-Wen Wang 1 , Zhen Li 1 , Jun-Peng Ni 1 , Li-Zhen Wang 1 , Yong Zhang 1 , Xiao-Yue Cui 2 , Ke-Zheng Gao 1 , Ji Yan 1, 3
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Spinel structure NiCo2O4 suffers from poor electric conductivity and the resulted electrochemical properties in battery/supercapacitor system are still unsatisfied. In this paper, a free-standing electrode based on in-situ growth NiCo2O4 on carbon cloth has been synthesized by a surfactant-assisted solvothermal method (sodium dodecyl sulfate, SDS). The functional carbon cloth substrate makes unexpected contribution to the electrochemical lithium-ion storage. The assembled supercapacitor possesses ultrahigh pseudocapacitive properties with high mass loading. The specific capacitance of 2832[Formula: see text]F[Formula: see text]g[Formula: see text] has been obtained at 1[Formula: see text]A[Formula: see text]g[Formula: see text] current density with maintaining the high rate capability of 1620[Formula: see text]F[Formula: see text]g[Formula: see text] at 20[Formula: see text]A[Formula: see text]g[Formula: see text]. The obtained nanoneedle NiCo2O4/carbon cloth electrode also maintains a specific capacity of 2000[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] at 40[Formula: see text]mA[Formula: see text]g[Formula: see text] and exceptional rate performance (1504[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 400[Formula: see text]mA[Formula: see text]g[Formula: see text] when tested as anode material in lithium ion batteries.

中文翻译:

功能化碳布对 NiCo2O4 纳米针基独立电极的超高电化学性能的贡献

尖晶石结构 NiCo24由于导电性差,因此在电池/超级电容器系统中的电化学性能仍不能令人满意。在本文中,一种基于原位生长 NiCo 的独立式电极24通过表面活性剂辅助溶剂热法(十二烷基硫酸钠,SDS)合成了碳布上的碳布。功能性碳布基材对电化学锂离子存储做出了意想不到的贡献。组装的超级电容器具有超高的赝电容特性和高质量负载。2832的比电容[公式:见文]F[公式:见文]g[公式:见文]在1处得到[公式:见文]A[公式:见文]g[公式:见文]电流密度保持 1620 的高倍率能力[公式:见正文]F[公式:见正文]g[公式:见正文]在 20[公式:见正文]A[公式:见正文]g[公式:见正文文本]。得到的纳米针NiCo24/碳布电极也保持比容量为2000[公式:见文]mA[公式:见文]h[公式:见文]g[公式:见文]在40[公式:见文]mA[公式:见文]g[公式:见文]和出色的倍率性能(1504[公式:见文]mAh[公式:见文]g[公式:见文] 400[公式:见文]mA[公式:见文]g[公式:见正文]作为锂离子电池正极材料测试时。
更新日期:2020-11-25
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