Kai Zheng , Bin Yu , Wensheng Ma , Xiangyu Fei , Guanhua Cheng , Meijia Song , Zhonghua Zhang
{"title":"Dealloying induced Porous Bi anodes for rechargeable magnesium-ion batteries","authors":"Kai Zheng , Bin Yu , Wensheng Ma , Xiangyu Fei , Guanhua Cheng , Meijia Song , Zhonghua Zhang","doi":"10.1016/j.jpowsour.2024.234943","DOIUrl":null,"url":null,"abstract":"<div><p>Alloy-type anodes have attracted extensive attention in magnesium-ion batteries (MIBs) due to their low reaction potentials and high theoretical specific capacities. However, the kinetically sluggish Mg insertion/extraction and diffusion in electrode materials, as well as the huge volume changes resulting in the capacity decay limit their further development. Herein, a series of porous-Bi (P-Bi<sub>x</sub>) anodes are fabricated through a facile dealloying strategy based on the Sn<sub>100-x</sub>Bi<sub>x</sub> (x = 1, 5, 10, 43, at.%) precursor alloys. Among them, the P–Bi<sub>10</sub> anode delivers a high discharge specific capacity (376.0 mAh g<sup>−1</sup> at 500 mA g<sup>−1</sup>), greatly improved rate capability (363.3 mAh g<sup>−1</sup> at 1000 mA g<sup>−1</sup>) and good cycling stability even at 2000 mA g<sup>−1</sup> (104.0 mAh g<sup>−1</sup> after 1000 cycles). Furthermore, operando X-ray diffraction (XRD) is performed to unveil the magnesiation/demagnesiation mechanisms of the P–Bi<sub>5</sub> and P–Bi<sub>10</sub> anodes, indicating a simple two-phase reaction process. Additionally, the P–Bi<sub>10</sub> anode displays good compatibility with conventional Mg salt electrolytes such as Mg(TFSI)<sub>2</sub>. Our findings could provide useful information on design of high-performance alloy-type anode materials for MIBs.</p></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Power Sources","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378775324008954","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Alloy-type anodes have attracted extensive attention in magnesium-ion batteries (MIBs) due to their low reaction potentials and high theoretical specific capacities. However, the kinetically sluggish Mg insertion/extraction and diffusion in electrode materials, as well as the huge volume changes resulting in the capacity decay limit their further development. Herein, a series of porous-Bi (P-Bix) anodes are fabricated through a facile dealloying strategy based on the Sn100-xBix (x = 1, 5, 10, 43, at.%) precursor alloys. Among them, the P–Bi10 anode delivers a high discharge specific capacity (376.0 mAh g−1 at 500 mA g−1), greatly improved rate capability (363.3 mAh g−1 at 1000 mA g−1) and good cycling stability even at 2000 mA g−1 (104.0 mAh g−1 after 1000 cycles). Furthermore, operando X-ray diffraction (XRD) is performed to unveil the magnesiation/demagnesiation mechanisms of the P–Bi5 and P–Bi10 anodes, indicating a simple two-phase reaction process. Additionally, the P–Bi10 anode displays good compatibility with conventional Mg salt electrolytes such as Mg(TFSI)2. Our findings could provide useful information on design of high-performance alloy-type anode materials for MIBs.
期刊介绍:
The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells.
Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include:
• Portable electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supply (UPS) systems
• Storage of renewable energy
• Satellites and deep space probes
• Boats and ships, drones and aircrafts
• Wearable energy storage systems