Research Article


2016, 9(5): 1358–1365


Controllable synthesis of triangular Ni(HCO3)2 nanosheets for supercapacitor

Xiaoxian Zang, Ziyang Dai, Jing Guo, Qiuchun Dong, Jun Yang, Wei Huang (*), and Xiaochen Dong (*)

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Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China

Keywords: nickel bicarbonate,nanosheets,anodes,supercapacitor
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Triangular Ni(HCO3)2 nanosheets were synthesized via a template-freesolvothermal method. The phase transition and formation mechanism wereexplored systematically. Further investigation indicated that the reaction timeand pH have significant effects on the morphology and size distribution of thetriangular Ni(HCO3)2 nanosheets. More interestingly, the resulting product hadan ultra-thin structure and high specific surface area, which can effectivelyaccelerate the charge transport during charge–discharge processes. As a result,the triangular Ni(HCO3)2 nanosheets not only exhibited high specific capacitance(1,797 F·g−1 at 5 A·g−1 and 1,060 F·g−1 at 50 A·g−1), but also showed excellentcycling stability with a high current density (~80% capacitance retention after5,000 cycles at the current density of 20 A·g−1).
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Controllable synthesis of triangular Ni(HCO3)2 nanosheets for supercapacitor. Nano Res. 2016, 9(5): 1358–1365

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