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引用次数: 0
摘要
固体电解质可防止锂枝晶的形成。然而,在循环过程中防止界面反应和不良锂金属沉积的发生却很困难,而且仍未得到解决。为了更好地理解这些现象,本研究报告了一种合金形成策略,通过在锂霰石固体电解质 Li6PS5Cl(LPSC-P)中加入锑(Sb)来形成锂锑合金,从而增强界面稳定性。阳极界面上出现的锂锑合金对促进锂的均匀沉积至关重要,从而实现了出色的长期稳定性,并达到了 14.5 mA cm-2 的最高临界电流密度(在已报道的硫化物固体电解质中),且没有锂枝晶渗透。此外,锂锑合金的形成甚至在多次电镀和剥离后仍能保持界面接触。锂锑合金的形成通过 XRD、拉曼和 XPS 得到了证实。这项研究成果展示了利用合金形成电解质制造先进固态电池的前景。
Li–Sb Alloy Formation Strategy to Improve Interfacial Stability of All-Solid-State Lithium Batteries
The solid electrolyte is anticipated to prevent lithium dendrite formation. However, preventing interface reactions and the development of undesirable lithium metal deposition during cycling are difficult and remain unresolved. Here, to comprehend these occurrences better, this study reports an alloy formation strategy for enhanced interface stability by incorporating antimony (Sb) in the lithium argyrodite solid electrolyte Li6PS5Cl (LPSC-P) to form Li–Sb alloy. The Li–Sb alloy emergence at the anodic interface is crucial in facilitating uniform lithium deposition, resulting in excellent long-term stability, and achieving the highest critical current density of 14.5 mA cm−2 (among the reported sulfide solid electrolytes) without lithium dendrite penetration. Furthermore, Li–Sb alloy formation maintain interfacial contact, even, after several plating and stripping. The Li–Sb alloy formation is confirmed by XRD, Raman, and XPS. The work demonstrates the prospect of utilizing alloy-forming electrolytes for advanced solid-state batteries.
Small MethodsMaterials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍:
Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques.
With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community.
The online ISSN for Small Methods is 2366-9608.