MOF-derived Bi2O3@C microrods as negative electrodes for advanced asymmetric supercapacitors

Bismuth oxide (Bi2O3) with high specific capacity has emerged as a promising negative electrode material for supercapacitors (SCs). Herein, we propose a facile metal–organic framework (MOF) derived strategy to prepare Bi2O3 microrods with a carbon coat (Bi2O3@C). They exhibit ultrahigh specific capa...

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Veröffentlicht in:	RSC advances 2020-04, Vol.10 (24), p.14107-14112
Hauptverfasser:	Yu, Xianbo, Sun, Jie, Zhao, Wenna, Zhao, Shihang, Chen, Hongmei, Tao, Kai, Hu, Yaoping, Han, Lei
Format:	Artikel
Sprache:	eng
Schlagworte:	Asymmetry Bismuth oxides Bismuth trioxide Chemistry Electrode materials Electrodes Energy storage Flux density Metal-organic frameworks Nanomaterials Supercapacitors
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container_issue	24
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container_title	RSC advances
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creator	Yu, Xianbo Sun, Jie Zhao, Wenna Zhao, Shihang Chen, Hongmei Tao, Kai Hu, Yaoping Han, Lei
description	Bismuth oxide (Bi2O3) with high specific capacity has emerged as a promising negative electrode material for supercapacitors (SCs). Herein, we propose a facile metal–organic framework (MOF) derived strategy to prepare Bi2O3 microrods with a carbon coat (Bi2O3@C). They exhibit ultrahigh specific capacity (1378 C g−1 at 0.5 A g−1) and excellent cycling stability (93% retention at 4000 cycles) when acting as negative electrode material for advanced asymmetric SCs. The assembled Bi2O3@C//CoNi-LDH asymmetric supercapacitor device exhibits a high energy density of 49 W h kg−1 at a power density of 807 W kg−1. The current Bi-MOF-derived strategy would provide valuable insights to prepare Bi-based inorganic nanomaterials for high-performance energy storage technologies and beyond.
doi_str_mv	10.1039/d0ra01470b
format	Article
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subjects	Asymmetry Bismuth oxides Bismuth trioxide Chemistry Electrode materials Electrodes Energy storage Flux density Metal-organic frameworks Nanomaterials Supercapacitors
title	MOF-derived Bi2O3@C microrods as negative electrodes for advanced asymmetric supercapacitors
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