In situ unipolar pulse electrodeposition of nickel hexacyanoferrate nanocubes on flexible carbon fibers for supercapacitor working in neutral electrolyte
In situ unipolar pulse electrodeposition of nickel hexacyanoferrate nanocubes on flexible carbon fibers for supercapacitor working in neutral electrolyte
复制标题
柔性碳纤维上六氰基铁酸镍纳米立方体的原位单极脉冲电沉积用于中性电解质中工作的超级电容器
DOI：
10.1016/j.jallcom.2016.10.206
复制
发表时间：
2017-02
影响因子：
6.2
通讯作者：
Guan Guoqing
中科院分区：
文献类型：
--
作者：
Ma Xuli;Du Xiao;Li Xiumin;Hao Xiaogang;Jagadale Ajay D.;Abudula Abuliti;Guan Guoqing
为开发一种中性电解液中超级电容器柔性电极，采用单极脉冲电沉积（UPED）技术在柔性碳纤维（CF）表面均匀沉积了铁氰化镍纳米立方体（NiHCF-NC）。结果表明，与常规的循环伏安法（CV）和恒电位法（PM）相比，UPED法制备的NiHCF薄膜由尺寸更均匀的纳米颗粒组成。脉冲电位对UPED的形貌和晶体结构有显著影响。在0.3 V下，在柔性CF上成功形成边长约200 nm的均匀NiHCF-NC。此外，NiHCF的两种结构的比率，即，“不溶性”和“可溶性”结构，可以很好地控制所施加的脉冲电位。通过循环伏安、恒电流充放电和交流阻抗测试表征了其电化学性能。在0.3 V脉冲电压下制备的NiHCF-NCs薄膜在中性电解液中的电容为476 F g-1（0.2 A g-1），充放电8000次后仍保持其初始值的92.5%。这表明这种简单、成本有效且易于扩展的NiHCF-NCs薄膜制备方法具有制备用于在中性电解质中工作的高性能超级电容器的柔性电极的商业潜力。
To develop a kind of flexible electrode for supercapacitors working in neutral electrolyte, nickel hexacyanoferrate nanocubes (NiHCF-NCs) are uniformly deposited on flexible carbon fibers (CFs) by using a facile unipolar pulse electrodeposition (UPED) technique. It is found that NiHCF film prepared by UPED is composed of NCs with more uniform size than those prepared by the common cyclic voltammetry (CV) and potentiostatic (PM) methods. Pulse potential of UPED has significantly influence on the morphology and crystal structure. Uniform NiHCF-NCs with approximately 200 nm side length are successfully formed on flexible CFs at 0.3 V. Moreover, the ratio of two structures of NiHCF, i.e., “insoluble” and “soluble” structures, can be well controlled by the applied pulse potential. Electrochemical performances are characterized by CV, galvanostatic charge/discharge and electrochemical impedance spectroscopy tests. NiHCF-NCs film on flexible carbon fibers prepared at 0.3 V applied pulse potential exhibits remarkable electrochemical performance with a capacitance as high as 476 F g−1at 0.2 A g−1in the neutral electrolyte, and the capacitance retains 92.5% of its initial value after 8000 charge/discharge cycles. It indicates that such a simple, cost-effective and readily scalable NiHCF-NCs film fabrication method has commercial potential for preparation of flexible electrode for high performance supercapacitors working in neutral electrolyte.
登录
查看更多内容
影响因子：
6.6
作者：
Hong-Ying Jiang;Yitao Xu;Tao Wang;Pengli Zhu;Shuhui Yu;Yan Yu;Xianzhu Fu;R. Sun;C. Wong
通讯作者：
Hong-Ying Jiang;Yitao Xu;Tao Wang;Pengli Zhu;Shuhui Yu;Yan Yu;Xianzhu Fu;R. Sun;C. Wong
影响因子：
9.2
作者：
Dongchang Chen;Min-Kyu Song;Shuang Cheng;Liang Huang;Meilin Liu
通讯作者：
Dongchang Chen;Min-Kyu Song;Shuang Cheng;Liang Huang;Meilin Liu
影响因子：
3.9
作者：
Xiumin Li;G. Guan;Xiao Du;A. Jagadale;Ji Cao;Xiaogang Hao;Xuli Ma;A. Abudula
通讯作者：
Xiumin Li;G. Guan;Xiao Du;A. Jagadale;Ji Cao;Xiaogang Hao;Xuli Ma;A. Abudula
用于电开关离子交换的高度稳定的六氰基铁酸镍纳米管
影响因子：
19
作者：
Chen, Wei;Xia, Xing-Hua
通讯作者：
Xia, Xing-Hua
影响因子：
32.5
作者：
Boukhalfa, Sofiane;Evanoff, Kara;Yushin, Gleb
通讯作者：
Yushin, Gleb