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High energy density asymmetric quasi-solid-state supercapacitor based on porous vanadium nitride nanowire anode

To push the energy density limit of asymmetric supercapacitors (ASCs), a new class of anode materials is needed. Vanadium nitride (VN) holds great promise as anode material for ASCs due to its large specific capacitance, high electrical conductivity, and wide operation windows in negative potential.... Full description

Journal Title: Nano letters 12 June 2013, Vol.13(6), pp.2628-33
Main Author: Lu, Xihong
Other Authors: Yu, Minghao , Zhai, Teng , Wang, Gongming , Xie, Shilei , Liu, Tianyu , Liang, Chaolun , Tong, Yexiang , Li, Yat
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1530-6992 ; PMID: 23634667 Version:1 ; DOI: 10.1021/nl400760a
Link: http://pubmed.gov/23634667
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title: High energy density asymmetric quasi-solid-state supercapacitor based on porous vanadium nitride nanowire anode
format: Article
creator:
  • Lu, Xihong
  • Yu, Minghao
  • Zhai, Teng
  • Wang, Gongming
  • Xie, Shilei
  • Liu, Tianyu
  • Liang, Chaolun
  • Tong, Yexiang
  • Li, Yat
subjects:
  • Engineering
ispartof: Nano letters, 12 June 2013, Vol.13(6), pp.2628-33
description: To push the energy density limit of asymmetric supercapacitors (ASCs), a new class of anode materials is needed. Vanadium nitride (VN) holds great promise as anode material for ASCs due to its large specific capacitance, high electrical conductivity, and wide operation windows in negative potential. However, its poor electrochemical stability severely limits its application in SCs. In this work, we demonstrated high energy density, stable, quasi-solid-state ASC device based on porous VN nanowire anode and VOx nanowire cathode for the first time. The VOx//VN-ASC device exhibited a stable electrochemical window of 1.8 V and excellent cycling stability with only 12.5% decrease of capacitance after 10,000 cycles. More importantly, the VOx//VN-ASC device achieved a high energy density of 0.61 mWh cm(-3) at current density of 0.5 mA cm(-2) and a high power density of 0.85 W cm(-3) at current density of 5 mA cm(-2). These values are substantially enhanced compared to most of the reported quasi/all-solid-state...
language: eng
source:
identifier: E-ISSN: 1530-6992 ; PMID: 23634667 Version:1 ; DOI: 10.1021/nl400760a
fulltext: fulltext
issn:
  • 15306992
  • 1530-6992
url: Link


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titleHigh energy density asymmetric quasi-solid-state supercapacitor based on porous vanadium nitride nanowire anode
creatorLu, Xihong ; Yu, Minghao ; Zhai, Teng ; Wang, Gongming ; Xie, Shilei ; Liu, Tianyu ; Liang, Chaolun ; Tong, Yexiang ; Li, Yat
ispartofNano letters, 12 June 2013, Vol.13(6), pp.2628-33
identifier
descriptionTo push the energy density limit of asymmetric supercapacitors (ASCs), a new class of anode materials is needed. Vanadium nitride (VN) holds great promise as anode material for ASCs due to its large specific capacitance, high electrical conductivity, and wide operation windows in negative potential. However, its poor electrochemical stability severely limits its application in SCs. In this work, we demonstrated high energy density, stable, quasi-solid-state ASC device based on porous VN nanowire anode and VOx nanowire cathode for the first time. The VOx//VN-ASC device exhibited a stable electrochemical window of 1.8 V and excellent cycling stability with only 12.5% decrease of capacitance after 10,000 cycles. More importantly, the VOx//VN-ASC device achieved a high energy density of 0.61 mWh cm(-3) at current density of 0.5 mA cm(-2) and a high power density of 0.85 W cm(-3) at current density of 5 mA cm(-2). These values are substantially enhanced compared to most of the reported quasi/all-solid-state...
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descriptionTo push the energy density limit of asymmetric supercapacitors (ASCs), a new class of anode materials is needed. Vanadium nitride (VN) holds great promise as anode material for ASCs due to its large specific capacitance, high electrical conductivity, and wide operation windows in negative potential. However, its poor electrochemical stability severely limits its application in SCs. In this work, we demonstrated high energy density, stable, quasi-solid-state ASC device based on porous VN nanowire anode and VOx nanowire cathode for the first time. The VOx//VN-ASC device exhibited a stable electrochemical window of 1.8 V and excellent cycling stability with only 12.5% decrease of capacitance after 10,000 cycles. More importantly, the VOx//VN-ASC device achieved a high energy density of 0.61 mWh cm(-3) at current density of 0.5 mA cm(-2) and a high power density of 0.85 W cm(-3) at current density of 5 mA cm(-2). These values are substantially enhanced compared to most of the reported quasi/all-solid-state...
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abstractTo push the energy density limit of asymmetric supercapacitors (ASCs), a new class of anode materials is needed. Vanadium nitride (VN) holds great promise as anode material for ASCs due to its large specific capacitance, high electrical conductivity, and wide operation windows in negative potential. However, its poor electrochemical stability severely limits its application in SCs. In this work, we demonstrated high energy density, stable, quasi-solid-state ASC device based on porous VN nanowire anode and VOx nanowire cathode for the first time. The VOx//VN-ASC device exhibited a stable electrochemical window of 1.8 V and excellent cycling stability with only 12.5% decrease of capacitance after 10,000 cycles. More importantly, the VOx//VN-ASC device achieved a high energy density of 0.61 mWh cm(-3) at current density of 0.5 mA cm(-2) and a high power density of 0.85 W cm(-3) at current density of 5 mA cm(-2). These values are substantially enhanced compared to most of the reported quasi/all-solid-state...
doi10.1021/nl400760a
pmid23634667
date2013-06-12