Yavuz Savsatli, Fan Wang, Hua Guo, Zeyuan Li, Andrew Hitt, Haizhou Zhan, Mingyuan Ge, Xianghui Xiao, Wah-Keat Lee, Harsh Agarwal, Ryan M. Stephens and Ming Tang*,
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引用次数: 0
Abstract
As a promising battery technology, zinc–air batteries still face significant challenges, including the formation of a mossy structure on the zinc metal anode in alkaline electrolyte. Because a similar phenomenon also plagues lithium and sodium metal batteries, elucidating its mechanism has important implications for progress in energy storage. Herein, operando X-ray nanotomography was employed to visualize zinc moss growth and dissolution at the individual colony level. By tracking its microstructure evolution, zinc moss was found to display irreversible plating/stripping behavior. While zinc moss exhibits self-limiting growth and zinc deposition occurs mainly in its outer region, zinc dissolution is more uniformly distributed inside the moss colony upon stripping, leading to the formation of “dead” zinc and capacity loss. A direct correlation is established between the moss amount and zinc plating/stripping efficiency. Results from this study offer new insights into mitigating the unstable zinc plating morphology and improving the cycle life of aqueous zinc–air batteries.
作为一种前景广阔的电池技术,锌空气电池仍然面临着巨大的挑战,包括锌金属阳极在碱性电解液中形成苔藓状结构。由于类似现象也困扰着锂电池和钠金属电池,因此阐明其机理对储能技术的进步具有重要意义。在此,我们采用了操作性 X 射线纳米层析技术来观察锌苔在单个菌落水平上的生长和溶解情况。通过跟踪其微观结构的演变,发现锌苔表现出不可逆的镀层/剥离行为。锌藓的生长具有自我限制性,锌主要沉积在其外部区域,而锌的溶解则在剥离时更均匀地分布在藓群内部,导致 "死 "锌的形成和容量的损失。苔藓数量与镀锌/剥离效率之间存在直接关联。这项研究的结果为缓解不稳定的镀锌形态和提高锌-空气水溶液电池的循环寿命提供了新的见解。
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.