论文总字数：26167字

摘 要

钠/金属氯化物（ZEBRA）电池是在钠硫电池研制基础上发展起来的一种新型高能电池。ZEBRA电池以其能量转换效率高，工作温度范围宽，耐过充、过放电，维护简便，所有材料可以回收再利用，对环境不会带来任何污染等优点受到广泛关注。β"-Al₂O₃陶瓷电解质是高性能钠电池的关键材料, 电池性能的好坏以及寿命的长短在很大程度上取决于β"-Al₂O₃陶瓷的性能,其最终失效多表现为电解质陶瓷管的破裂, 提高β"-Al₂O₃陶瓷的强度和断裂韧性是改善电池的性能和延长电池寿命的关键。因此，提高钠电池质量的研究具有现实意义。我们主要通过电泳沉积法制备β"-Al₂O₃陶瓷，本文主要通过研究电泳沉积所用粉体各原料的配比，得到最优配比，通过研究β"-Al₂O₃的烧结制度（温度）得到强度及β"-Al₂O₃含量高且致密的陶瓷，从而延长电池性能，寿命。通过对电泳所用悬浮液添加硫酸和三氯乙酸，研究对电泳沉积各参数的影响，并得出使电导率，强度兼顾的添加剂及添加量。通过实验得出添加10%三氯乙酸的悬浮液最有利于电泳沉积，电导率，zeta电位均较好，且电泳沉积所得陶瓷性能较好。

关键字：β"-Al₂O₃陶瓷电解质 电泳沉积 硫酸 三氯乙酸

Effect of acids on electrophoretic deposition of beta”-alumina

Abstract

Sodium / metal chloride (ZEBRA) batteries developed in the development of sodium-sulfur batteries are a new type of high-energy batteries. ZEBRA batteries attracted widespread attention because of its high energy conversion efficiency, wide operating temperature range, resistance to overcharge, over-discharge, easy to maintain, all materials can be recycled, the environment will not cause any pollution etc. β"-Al₂O₃ ceramic l is the key material to high performance sodium batteries. And the quality of battery performance and length of life depends largely on β"-Al₂O₃ ceramic performance. Its performance failure is always ceramic tube rupture and improvement of β"-Al₂O₃ ceramic strength and fracture toughness are key to improving battery performance and extending battery life. Therefore, the research improving the quality of the sodium battery is practical significance. We mainly prepare β"-Al₂O₃ ceramics by electrophoretic deposition. The study mainly research the ratio of electrophoretic deposition of the powder of the raw materials used then we grasp the optimal ratio .We get the β"-Al₂O₃ electrolyte with high density and high strength by researching β"-Al₂O₃ sintering system (temperature) .then improve performance and extend its life . By adding sulfuric acid and TCA in Suspension used by electrophoretic deposition we study electrophoretic deposition parameters then we get the amount added with both of high conductivity and high strength. Of which 10% TCA suspension is applicable to electrophoretic deposition. Its conductivity and zeta potential is better .The resulting ceramic by electrophoretic deposition has better performance.

Key Words:β "-Al₂O₃ electrolyte; electrophoretic deposition; Sulfuric acid; TCA

目录

摘要 I

Abstract II

第一章 绪论 1

1.1 引言 1

1.2 钠/金属氯化物电池概况 3

1.2.1电池结构、工作原理 3

1.2.2 ZERBA电池固体电解质 4

1.3电泳沉积概述 5

1.3.1 电泳沉积研究进展 5

1.3.2胶体悬浮液中粒子的相互作用和电泳沉积机理 6

1.3.3 悬浮液稳定机制 8

1.3.4悬浮液中粒子相互作用 9

1.4性能表征原理 12

1.4.1XRD衍射分析 12

1.4.2zeta电位测试 13

1.4.3 电导率测试 13

第二章实验部分 14

2.1 实验设备与实验原料 14

2.1.1 实验主要设备 14

2.1.2 主要原料与药品 14

2.2 实验探索 15

2.2.1 电泳用粉体的制备 15

2.2.2 沉积后烧结温度探索 16

2.2.3配料 16

2.2.4 电泳沉积实验 18

第三章实验结果与分析 21

3.1电泳用粉体制备结果与分析 21

3.2电泳沉积后烧结温度结果与分析 22

3.3电泳沉积结果与分析 24

3.3.1 添加硫酸时结果与分析 24

3.3.2 添加TCA时结果与分析 26

第四章实验结论 28

参考文献 29

致谢 30

第一章 绪论

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