锻造对钒基储氢电池用自蔓延高温合成合金性能的影响

    Effects of Forging on Properties of Self-Propagating High-Temperature Synthesized Alloys for Vanadium-Based Hydrogen Storage Batteries

    • 摘要: 为了探讨锻造对新能源汽车用钒基储氢电池自蔓延高温合成合金性能的影响,提高其综合性能,对自蔓延高温合成V3TiNi0.56钒基储氢合金进行了锻造,并进行试样的显微组织、充放电循环稳定性能和耐碱液腐蚀性能的分析。结果表明:锻造使自蔓延高温合成V3TiNi0.56钒基储氢试样平均晶粒尺寸减小65.38%,放电容量衰减率减小91.08%,腐蚀电位正移19.24%,显著提高了合金的充放电循环的稳定性能和耐碱液腐蚀性能。

       

      Abstract: In order to explore the effect of forging on the properties of self-propagating high-temperature synthesized alloys for vanadium-based hydrogen storage batteries of new energy vehicles and improve their comprehensive properties, the samples of self-propagating high-temperature synthesized V3TiNi0.56vanadium-based hydrogen storage alloys were forged, and the microstructure, charge-discharge cycle stability and alkali corrosion resistance of the sample were also tested and analyzed.The results show that forging reduces the average grain size of the self-propagating high-temperature synthesized V3TiNi0.56vanadium-based hydrogen storage sample by 65.38%, the discharge capacity decay rate is decreased by 91.08%,and the positive shift of corrosion potential is 19.24%, which significantly improves the charge discharge cycle stability and alkali corrosion resistance of the alloy.

       

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