Miaomiao Zhang , Yu Guo , Jinchao Zou , Xiangyu Gao , Peikang Bai , Tao Wang , Zhiquan Huang
{"title":"镁空气电池阳极放电和钝化之间的滚动平衡机制","authors":"Miaomiao Zhang , Yu Guo , Jinchao Zou , Xiangyu Gao , Peikang Bai , Tao Wang , Zhiquan Huang","doi":"10.1016/j.jallcom.2025.180351","DOIUrl":null,"url":null,"abstract":"<div><div>Magnesium alloy has become an ideal anode material for metal-air batteries due to its advantages of light weight, high safety and high negative potential. However, the balance between the discharge rate and the passivation phenomenon of the magnesium alloy anode seriously limits its application. In this study, AZ31 magnesium alloy was processed by six different rolling routes. It was unexpectedly found that 90° cross rolling can effectively coordinate the deformation and balance the generation and peeling of discharge products, resulting in higher anode efficiency and specific capacity. This is primarily influenced by the interaction of grain size, grain distribution, and crystal orientation of the magnesium alloy anode. In-depth analysis shows that during the discharge process, the uniformly distributed fine-grained structure and (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>¯</mo></mover><mn>0</mn></mrow></math></span>) oriented grains can effectively reduce the 'block effect' and form loose, easily broken discharge products on the surface of the alloy anode. This results in higher discharge voltage, better stable discharge performance, and higher anode efficiency.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1025 ","pages":"Article 180351"},"PeriodicalIF":6.3000,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rolling balance mechanism between discharge and passivation of magnesium-air battery anodes\",\"authors\":\"Miaomiao Zhang , Yu Guo , Jinchao Zou , Xiangyu Gao , Peikang Bai , Tao Wang , Zhiquan Huang\",\"doi\":\"10.1016/j.jallcom.2025.180351\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Magnesium alloy has become an ideal anode material for metal-air batteries due to its advantages of light weight, high safety and high negative potential. However, the balance between the discharge rate and the passivation phenomenon of the magnesium alloy anode seriously limits its application. In this study, AZ31 magnesium alloy was processed by six different rolling routes. It was unexpectedly found that 90° cross rolling can effectively coordinate the deformation and balance the generation and peeling of discharge products, resulting in higher anode efficiency and specific capacity. This is primarily influenced by the interaction of grain size, grain distribution, and crystal orientation of the magnesium alloy anode. In-depth analysis shows that during the discharge process, the uniformly distributed fine-grained structure and (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>¯</mo></mover><mn>0</mn></mrow></math></span>) oriented grains can effectively reduce the 'block effect' and form loose, easily broken discharge products on the surface of the alloy anode. This results in higher discharge voltage, better stable discharge performance, and higher anode efficiency.</div></div>\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":\"1025 \",\"pages\":\"Article 180351\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-04-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925838825019127\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925838825019127","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Rolling balance mechanism between discharge and passivation of magnesium-air battery anodes
Magnesium alloy has become an ideal anode material for metal-air batteries due to its advantages of light weight, high safety and high negative potential. However, the balance between the discharge rate and the passivation phenomenon of the magnesium alloy anode seriously limits its application. In this study, AZ31 magnesium alloy was processed by six different rolling routes. It was unexpectedly found that 90° cross rolling can effectively coordinate the deformation and balance the generation and peeling of discharge products, resulting in higher anode efficiency and specific capacity. This is primarily influenced by the interaction of grain size, grain distribution, and crystal orientation of the magnesium alloy anode. In-depth analysis shows that during the discharge process, the uniformly distributed fine-grained structure and () oriented grains can effectively reduce the 'block effect' and form loose, easily broken discharge products on the surface of the alloy anode. This results in higher discharge voltage, better stable discharge performance, and higher anode efficiency.
期刊介绍:
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.