Ultra-small Ni-VN nanoparticles co-embedded in N-doped carbons as an effective electrode material for energy storage
Ultra-small Ni-VN nanoparticles co-embedded in N-doped carbons as an effective electrode material for energy storage
复制标题
超小型 Ni-VN 纳米颗粒共嵌入 N 掺杂碳中作为有效的储能电极材料
DOI：
10.1016/j.electacta.2019.02.056
复制
发表时间：
2019-04
影响因子：
6.6
通讯作者：
Yan Xing
中科院分区：
文献类型：
--
作者：
Xin Jiang;Wei Lu;Yang Yu;Man Yang;Xianchun Liu;Yan Xing
氮化钒（VN）作为一种新兴的阳极材料，因其高的比电容、优异的导电性和合适的工作电位窗口（OPW）而备受关注。本文中，超小Ni纳米颗粒（NP）和VN NP已经嵌入N掺杂碳（NC）纳米片中作为超级电容器（SC）的阳极材料，充分利用Ni NP和NC纳米片的导电性以及VN NP的优异比电容，新型3-Ni/VN/NC-7复合电极在1 A g-1下表现出令人钦佩的236 F g-1的比电容。此外，分别组装了（-）3-Ni/VN/NC-7//CuCo 2 O 4（+）非对称超级电容器（ASC）和3-Ni/VN/NC-7对称超级电容器（SSC）。（−）3-Ni/VN/NCs-7//CuCo 2 O 4（+）ASC器件在1.8 V的大OPW下显示出65 F g− 1的电容。更重要的是，它在930 W kg− 1时的能量密度为25 Wh kg− 1，循环稳定性极佳（5000次循环后保持73.5%）。引人注目的是，3-Ni/VN/NCs-7 SSC器件不仅具有卓越的循环性能，而且在600 W kg− 1的功率密度下具有13.4 Wh kg− 1的良好能量密度，这比大多数碳基材料都要优越上级。
As a class of emerging anode material, much attention has been dominated to vanadium nitride (VN) in view of its high specific capacitance, exceptional conductivity and proper operating potential window (OPW). Herein, ultra-small Ni nanoparticles (NPs) and VN NPs have been embedded in N-doped carbons (NCs) nanosheets as an anode material for supercapacitors (SCs), making the good use of the conductivity of Ni NPs and NCs nanosheets, as well as the excellent specific capacitance of VN NPs, the novel 3-Ni/VN/NCs-7 composite electrode exhibits an admirable specific capacitance of 236 F g−1at 1 A g−1. Furthermore, the (−) 3-Ni/VN/NCs-7//CuCo2O4(+) asymmetrical supercapacitor (ASC) and 3-Ni/VN/NCs-7 symmetrical supercapacitor (SSC) have been assembled, respectively. The (−) 3-Ni/VN/NCs-7//CuCo2O4(+) ASC device shows a capacitance of 65 F g−1at a large OPW of 1.8 V. More importantly, it achieves an energy density of 25 Wh kg−1at 930 W kg−1and a superb cycling stability (73.5% retention after 5000 cycles). Strikingly, the 3-Ni/VN/NCs-7 SSC device not only presentssurpassing cycling behavior, but also possesses favorable energy density of 13.4 Wh kg−1at a power density of 600 W kg−1, which is superior to most of the carbon-based materials.
登录
查看更多内容
影响因子：
9.2
作者：
Yage Wu;F. Ran
通讯作者：
Yage Wu;F. Ran
Co-VN封装在竹状氮掺杂碳纳米管中，用于氧还原反应的超高稳定性
影响因子：
6.7
作者：
Wang Ying;Wang Lei;Tong Miaomiao;Zhao Xiaojun;Gao Yanting;Fu Honggang
通讯作者：
Fu Honggang
用于实现卓越性能混合超级电容器的 3D 多孔 CQD/MxOy（M = Co、Ni）的通用方法
影响因子：
15.1
作者：
Guijuan Wei;Xixia Zhao;Kun Du;Zhaojie Wang;Ming Liu;Shuo Zhang;Shutao Wang;Jun Zhang;Changhua An
通讯作者：
Changhua An
影响因子：
19
作者：
Fei Sun;Zhibin Qu;Jihui Gao;H. Wu;Fang Liu;Rui Han;Lijie Wang;Tong Pei;Guang-bo Zhao
通讯作者：
Fei Sun;Zhibin Qu;Jihui Gao;H. Wu;Fang Liu;Rui Han;Lijie Wang;Tong Pei;Guang-bo Zhao
影响因子：
3.7
作者：
Li Zhang;C. M. Holt;E. Luber;B. Olsen;Huatao Wang;M. Danaie;Xinwei Cui;X. Tan;V. Lui;
通讯作者：
Li Zhang;C. M. Holt;E. Luber;B. Olsen;Huatao Wang;M. Danaie;Xinwei Cui;X. Tan;V. Lui;