新型钒基新能源汽车电池负极合金的制备与性能研究

冯竞祥; 罗瑜清; 曹立祥

doi:10.7513/j.issn.1004-7638.2021.03.014

新型钒基新能源汽车电池负极合金的制备与性能研究

doi: 10.7513/j.issn.1004-7638.2021.03.014

1.
佛山职业技术学院汽车工程学院，广东佛山 528137
2.
广东环境保护工程职业学院，广东佛山 528216
3.
西南大学材料与能源学院，重庆 400715

基金项目: 广东省普通高校重点科研平台和科研项目青年创新人才类项目“（编号：2018GkQNCX054）

详细信息

作者简介:
冯竞祥（1988—），男，汉族，广东佛山人，工学硕士，高校讲师，研究方向：新能源汽车技术，E-mail：f.magic@163.com

中图分类号: TF841.3, TG132.25
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- 文章访问数: 323
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-07
- 刊出日期: 2021-06-10

Preparation and properties of a new vanadium based anode alloy for automotive batteries

1.
School of Automotive Engineering, College of Foshan Polytechnic, Foshan 528137, Guangdong, China
2.
Guangdong Polytechnic of Environment Protection Engineering, Foshan 528216, Guangdong, China
3.
School of Materials and Energy, Southwest University, Chongqing 400715, China

摘要

摘要: 采用自蔓延高温合成法制备了添加不同含量合金元素Al或Cr的新型钒基新能源汽车电池负极合金V65Ti20Ni15，并进行了显微组织、电化学循环稳定性和耐腐蚀性能的测试与分析。结果表明，合金元素Al或Cr，有助于改善合金内部组织，提高合金的电化学循环稳定性和耐腐蚀性能；复合添加合金元素Cr和Al的V59Ti20Ni15Al3Cr3合金的电化学循环稳定性和耐腐蚀性能最佳。与不添加合金元素的V65Ti20Ni15合金相比，复合添加合金元素Cr和Al的V59Ti20Ni15Al3Cr3合金的充放电循环50次后放电容量衰减率从85%减小到23%、腐蚀电位正移692 mV，合金的电化学循环稳定性和耐腐蚀性能得到显著提高。
- 钒基汽车电池负极合金 /
- V59Ti20Ni15Al3Cr3 /
- 自蔓延高温合成 /
- 电化学循环稳定性 /
- 耐腐蚀性能
Abstract: A new vanadium based negative electrode alloy V65Ti20Ni15 for automotive batteries was prepared by self propagating high temperature synthesis (SHS) with different contents of Al or Cr. The microstructure, electrochemical cycle stability and corrosion resistance of the alloy were tested and analyzed. The results show that Al or Cr is helpful to improve the internal structure, electrochemical cycle stability and corrosion resistance of the alloy. The best electrochemical cycle stability and corrosion resistance can be obtained for V59Ti20Ni15Al3Cr3 alloy with Cr and Al added. Compared with the V65Ti20Ni15 alloy without alloying elements, the discharge capacity decay rate of V59Ti20Ni15Al3Cr3 alloy with alloying elements Cr and Al is reduced from 85% to 23% after 50 charge-discharge cycles, with the corrosion potential shifted forward by 692 mV. The electrochemical cycle stability and corrosion resistance of the alloy are significantly improved.
- vanadium based negative electrode alloy /
- V59Ti20Ni15Al3Cr3 alloy /
- self propagating high temperature synthesis /
- electrochemical cycle stability /
- corrosion resistance

HTML全文

图 1 合金试样的制备工艺流程

Figure 1. Preparation process of the alloy samples

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图 2 合金试样的显微组织

Figure 2. Microstructures of the alloy samples

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图 3 合金试样的电化学循环稳定性

Figure 3. Electrochemical cycle stability of the alloy samples

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图 4 合金试样的耐腐蚀性能测试结果

Figure 4. Corrosion resistance test results of the alloy samples

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图 5 合金试样腐蚀试验后的表面形貌

Figure 5. Surface morphologies of the alloy samples after corrosion test

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表 1 合金试样化学成分

Table 1. Chemical compositions of the alloy samples %

合金试样	V	Ti	Ni	Al	Cr
V65Ti20Ni15	65	20	15	0	0
V62Ti20Ni15Al3	62	20	15	3	0
V62Ti20Ni15Cr3	62	20	15	0	3
V59Ti20Ni15Al3Cr3	59	20	15	3	3

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