| 高性能NiCoP基超级电容器电化学性能 | |
| Electrochemical Properties of High-Performance NiCoP-Based Supercapacitors | |
| 摘要: 采用水热和低温磷化反应两步法，在无添加沉淀剂条件下成功在泡沫镍上合成纳米花状镍钴磷化物（NiCoP/NF）。研究结果表明，镍/钴元素物质的量之比为1：1时，在1 A·g-1电流密度下，Ni1/2Co1/2P/NF的比容量高达1 276.36 F·g-1，在10 A·g-1电流密度下充放电循环3 000次后，比容量保持率为78.23%。此外，以Ni1/2Co1/2P/NF为正极，活性炭（AC）为负极组装的非对称超级电容器（Ni1/2Co1/2P/NF//AC/NF）在725 W·kg-1的功率密度下，能量密度高达36.25 Wh·kg-1。 | |
| 关键词: 镍钴磷化物 纳米花 泡沫镍 非对称超级电容器 | |
| 基金项目: 上海市基础研究发展计划（No.19JC1410402）和上海市教委创新计划（No.2019-01-07-00-07-E00015）资助。 | |
| Abstract: Herein, nanoflower-like nickel-cobalt phosphates coated on nickel foam (NiCoP/NF) were synthesized by two steps of hydrothermal and low temperature phosphating reaction without precipitator. The result showed that when the molar ratio of Ni and Co was 1:1, the Ni1/2Co1/2P/NF electrode delivered a high specific capacitance which can reach 1 276.36 F·g-1 at the current density of 1 A·g-1. 78.23% of initial specific capacitance was maintained after 3 000 charging and discharging cycles at the current density of 10 A·g-1. What's more, an asymmetric supercapacitor (Ni1/2Co1/2P/NF//AC/NF) was assembled using Ni1/2Co1/2P/NF and activated carbon (AC) as positive and negative electrodes. The device delivered a high energy density of 36.25 Wh·kg-1 at a power density of 725 W·kg-1. | |
| Keywords: nickel-cobalt phosphates nanoflower nickel foam asymmetric supercapacitors | |
| 投稿时间：2021-01-20 修订日期：2021-04-22 | |
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| 董永光,李生娟,罗意,姚远,鲁成龙,杨俊和.高性能NiCoP基超级电容器电化学性能[J].无机化学学报,2021,37(6):1062-1070. | |
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