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| Rate Performance Analysis of Ni1-xMnx(OH)2 as Cathode Material for Zinc-Nickel Single Flow Battery |
| Author Name | Affiliation | E-mail | | YAO Shou-Guang | School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China | zjyaosg@126.com | | DOU Fei | School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China
Zhangjiagang Smartgrid Fanghua Electrical Energy Storage Research Institute Co., Ltd., Suzhou, Jiangsu 215600, China | | | XING Ru-Yue | School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China
Zhangjiagang Smartgrid Fanghua Electrical Energy Storage Research Institute Co., Ltd., Suzhou, Jiangsu 215600, China | | | CHENG Jie | Zhangjiagang Smartgrid Fanghua Electrical Energy Storage Research Institute Co., Ltd., Suzhou, Jiangsu 215600, China
Zhejiang Yuyuan Energy Storage Technology Co., Ltd., Huzhou, Zhejiang 313100, China | | | XIAO Min | School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China | |
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| Abstract: Manganese-doped Ni1-xMnx(OH)2 (x=0.1, 0.2, 0.3, 0.4) was prepared by buffer solution method. X-ray diffraction (XRD) measurements showed that the samples were mainly composed of β phase when x=0.1 and 0.2. Scanning electron microscopy (SEM) measurements and nitrogen adsorption-desorption showed that the Mn doped samples were finer and more porous than commercial β-Ni(OH)2 samples without Mn. The constant current charge-discharge tests show that the material of Ni0.8Mn0.2(OH)2 exhibited a high specific discharge capacity of 288.8 mAh·g-1 at 800 mA·g-1 when the specific discharge capacity of commercial β-Ni(OH)2 was 198.7 mAh·g-1. In addition, the electrodes have excellent cycle performance. When the Mn content x is 0.2, the material maintained a specific discharge capacity of 276 mAh·g-1 after circulating 580 cycles at 800 mA·g-1 with an attenuation rate of 4.1%, the attenuation rates of the others were 46.1% (commercial β-Ni(OH)2), 13.0% (x=0.1), 22.6% (x=0.3) and 34.1% (x=0.4). This indicated that Mn doped Ni(OH)2 can improve the cycling stability of nickel electrodes at high current density, and greatly reduce the cost of nickel electrodes. |
| Keywords: buffer solution method Ni1-xMnx(OH)2 rate performance cyclic stability |
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| YAO Shou-Guang,DOU Fei,XING Ru-Yue,CHENG Jie,XIAO Min.Rate Performance Analysis of Ni1-xMnx(OH)2 as Cathode Material for Zinc-Nickel Single Flow Battery[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1403-1410. |
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