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Study on the Performances of Nickel Hydroxide Coated with Ytterbium Hydroxide at High-Temperature
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Study on the Performances of Nickel Hydroxide Coated with Ytterbium Hydroxide at High-Temperature
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Natural Science Foundation of Inner Mongolia (2012MS0205), Scientific Research Project of Higher Education Institutions of Inner Mongolia (NGZZ12101); Scientific Planning Project of Baotou(2011Z1006)

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    摘要:

    在氫氧化鎳表面包覆氫氧化鐿和氫氧化鈷并用 XRD、XPS、SEM和恒電流充放電技術(shù)進(jìn)行表征。結(jié)果表明：β-Ni(OH)2為六方晶型，Co的存在形式主要為Co2＋及有少量的Co3＋。樣品表面Co 和 Ni原子比大于8:1。65 ℃下0.2、1和3 C恒電流充放電時(shí)，表面包覆2%Yb(OH)3的樣品放電容量和活性物質(zhì)利用率最大。65 ℃時(shí)經(jīng)過30次充放電循環(huán)后，在不同的充放電倍率下，表面包覆不同量Yb(OH)3的氫氧化鎳的放電循環(huán)穩(wěn)定性和放電容量隨著Yb(OH)3含量的增加而增大。

    Abstract:

    The surface of nickel hydroxide [Ni(OH)2] coated with ytterbium hydroxide [Yb(OH)3] and cobalt hydroxide [Co(OH)2] were studied and characterized by XRD, XPS, SEM and constant current recharge technology. The results show that the structure of β-Ni(OH)2 is hexagonal, Co exists mainly in the form of Co2+ with a small amount of Co3+, and the atomic ratio of Co and Ni on the sample surface is more than 8:1. The samples coated of 2 wt% Yb(OH)3 show the maximum discharge capacity and active material utilization rate at 65 °C (0.2, 1, 3 C). After 30 charge/discharge cycles, the discharge cycling stability and the discharge capacity of Ni(OH)2 coated with different contents of Yb (OH)3 are enhanced with increasing of content of Yb(OH)3 under different charge/discharge rates at 65 °C.

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赫文秀,安勝利,張永強(qiáng),蔣文全. Study on the Performances of Nickel Hydroxide Coated with Ytterbium Hydroxide at High-Temperature[J].稀有金屬材料與工程,2012,41(7):1129~1134.[He Wenxiu, An Shengli, Zhang Yongqiang, Jiang Wenquan. Study on the Performances of Nickel Hydroxide Coated with Ytterbium Hydroxide at High-Temperature[J]. Rare Metal Materials and Engineering,2012,41(7):1129~1134.]
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  • 收稿日期:2011-07-27
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