Boron Element Nanowires Electrode for Supercapacitors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number1703117
Journal / PublicationAdvanced Energy Materials
Issue number20
Online published25 Mar 2018
Publication statusPublished - 16 Jul 2018


The pursuit of new categories of active materials as electrodes of supercapacitors remains a great challenge. Herein, for the first time, elemental boron as a superior electrode material of supercapacitors is reported, which exhibits significantly high capacitances and excellent rate performance in all alkaline, neutral, and acidic electrolytes. Notably, boron nanowire-carbon fiber cloth (BNWs-CFC) electrodes achieve a capacitance up to 42.8 mF cm-2 at a scan rate of 5 mV s-1 and 60.2 mF cm-2 at a current density of 0.2 mA cm-2 in the acidic electrolyte. Moreover, in all these three kinds of electrolytes, BNWs-CFC electrodes demonstrate a decent cycling stability with >80% capacitance retention after 8000 charging/discharging cycles. The Dominating energy storage mechanism of BNWs in the different electrolytes is analyzed by looking into the kinetics of the electrochemical process. Subsequently, the BNWs-CFC electrode is used to fabricate a flexible solid-state supercapacitor, which reveals a specific capacitance up to 22.73 mF cm-2 and good mechanical performance after 1000 bending cycles. This study opens a new avenue to explore elemental boron-based new nanomaterials for the application of energy storage with superior electrochemical performance.

Research Area(s)

  • Boron nanowires, Energy storage, Flexible supercapacitors, Supercapacitors

Citation Format(s)

Boron Element Nanowires Electrode for Supercapacitors. / Xue, Qi; Gan, Haibo; Huang, Yan; Zhu, Minshen; Pei, Zengxia; Li, Hongfei; Deng, Shaozhi; Liu, Fei; Zhi, Chunyi.

In: Advanced Energy Materials, Vol. 8, No. 20, 1703117, 16.07.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal