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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Crystal structural and electrochemical properties of T_(0.17)Zr_(0.08)V_(0.35)Cr_(0.10)Ni_(0.30-x)Mn_x (x = 0-0.12) alloys
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Crystal structural and electrochemical properties of T_(0.17)Zr_(0.08)V_(0.35)Cr_(0.10)Ni_(0.30-x)Mn_x (x = 0-0.12) alloys

机译：T_（0.17）Zr_（0.08）V_（0.35）Cr_（0.10）Ni_（0.30-x）Mn_x（x = 0-0.12）合金的晶体结构和电化学性能

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摘要

To get the Ni-MH batteries used within wide temperature with high discharge capacity, the crystal structural and electrochemical properties of T_(0.17)Zr_(0.08)V_(0.35)Cr_(0.10)Ni_(0.30-x)Mn_x(x = 0-0.12) alloys were investigated. The partial substitution of Ni by Mn remains the crystal structure of these alloys, and they are still composed of bcc phase and C14 Laves phase. Both the lattice parameter and phase abundance of bcc phase decrease slightly, however, those of C14 Laves phase increase. The discharge capacity, the exchange current density and limit current density of these alloy electrodes at 298 K enhance obviously, but the electrochemical cyclic stability, the rate dischargeability and the polarization resistance decrease with increasing Mn content. Also, the electrochemical properties of these alloy electrodes at 273 K and 343 K were examined. The results show that T_(0.17)Zr_(0.08)V_(0.35)Cr_(0.10)Ni_(0.30-x)Mn_xNi_(0.25)Mn_(0.05) (x = 0.05) compound has a good performance, which maybe has a potential application within the wide temperature.
机译：为了使镍氢电池能够在宽温度范围内使用并具有高放电容量，T_（0.17）Zr_（0.08）V_（0.35）Cr_（0.10）Ni_（0.30-x）Mn_x（x = 0的晶体结构和电化学性能-0.12）合金进行了研究。 Mn部分取代Ni仍保留了这些合金的晶体结构，并且仍由bcc相和C14 Laves相组成。 bcc相的晶格参数和相丰度均略有下降，但是C14 Laves相的晶格参数和相丰度均增加。这些合金电极在298 K时的放电容量，交换电流密度和极限电流密度均明显提高，但随着Mn含量的增加，电化学循环稳定性，倍率放电率和极化电阻降低。另外，检查了这些合金电极在273K和343K下的电化学性能。结果表明，T_（0.17）Zr_（0.08）V_（0.35）Cr_（0.10）Ni_（0.30-x）Mn_xNi_（0.25）Mn_（0.05）（x = 0.05）的化合物具有良好的性能，可能具有潜力在宽温度范围内应用。

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