无机材料学报 ›› 2013, Vol. 28 ›› Issue (10): 1132-1136.DOI: 10.3724/SP.J.1077.2013.13082 CSTR: 32189.14.SP.J.1077.2013.13082

• 研究论文 • 上一篇    下一篇

钠电池用梯度封接材料制备与性能

张高校, 温兆银, 吴相伟, 张敬超   

  1. (中国科学院 上海硅酸盐研究所, 中国科学院能量转换材料重点实验室, 上海无机能源材料与电源工程技术研究中心, 上海200050)
  • 收稿日期:2012-02-15 修回日期:2013-03-28 出版日期:2013-10-20 网络出版日期:2013-09-18
  • 作者简介:张高校(1986-), 男, 博士研究生. E-mail: gxzhang@student.sic.ac.cn
  • 基金资助:

    国家自然科学基金重点项目(50730001); 科技部重点基金(2007CB209700)

Preparation and Characterization of Gradient Sealing Material for Sodium Anode Based Battery

ZHANG Gao-Xiao, WEN Zhao-Yin, WU Xiang-Wei, ZHANG Jing-Chao   

  1. (Shanghai Enginering Research Center of Inorganic Energy Materials and Electric Power Sources, CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)
  • Received:2012-02-15 Revised:2013-03-28 Published:2013-10-20 Online:2013-09-18
  • About author:ZHANG Gao-Xiao. E-mail: gxzhang@student.sic.ac.cn
  • Supported by:

    National Science Foundation of China (NSFC) (50730001); 973 project of China (2007CB209700)

摘要: 基于粉末叠层-共烧法设计并制备了α-Al2O3与Na-β-Al2O3相梯度变化的陶瓷基功能材料(FGM), 用于钠电池中绝缘陶瓷α-Al2O3和Na-β-Al2O3之间的封接。所设计的相变化率分别为20wt%、10wt%和5wt%。研究结果表明: 二维生长的Na-β-Al2O3晶粒对梯度复合陶瓷的致密度有一定的影响。对沿梯度变化方向不同位置FGM的成分分析表明, 由于FGM中Na、Li成分的扩散, 消除了梯度过渡层间的界面。20wt%、10wt%和5wt%梯度变化的FGM的抗折强度分别为: (130(2)、(180(3)和(225(2) MPa。经过长时间350℃保温以及多次热循环, 梯度材料的机械性能没有明显退化, 表现出良好的机械热稳定性和抗热震性。

关键词: 钠电池, 梯度封接, 弯曲强度

Abstract: A functional gradient material (FGM) based sealing was designed and applied to seal the α-Al2O3 insulator with Na-β-Al2O3 solid electrolyte of sodium anode batteries. FGMs with different component change rates were fabricated by powder stacking method. The experimental results indicated that the two dimensional feature of Na-β-Al2O3 grains greatly influenced the density of the α-Al2O3/Na-β-Al2O3 composite ceramics. It was demonstrated that the chemical diffusion of Na and Li in FGM diminished the interfaces among diffrent layers. Bending strengths of the FMGs reached (130(2), (180(3) and (225(2) MPa for the samples with component change rate of 20wt%, 10wt% and 5wt%, respectively. Moreover, the mechanical performance of the FGMs was rarely affected by heat treatment and thermal cycling, demonstrating its favorable mechanical and thermal stability.

Key words: sodium anode based battery, gradient sealing, bending strength

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