近期，我院研究生陸晨愷（第一作者）、教師蘇超（通訊作者）等人在《Journal of Colloid and Interface Science》（IF=9.7）上發(fā)表題為“Advances in silane-bridging engineering for stable lithium metal batteries”的綜述文章。
論文簡介如下：
鋰金屬電池（LMB）作為一種高能量密度的突出電池技術，已引起廣泛關注。然而，其商業(yè)化進程因容量衰減過快及潛在安全風險而受阻。這些障礙源于循環(huán)過程中的挑戰(zhàn)，包括固體電解質(zhì)界面（SEI）層不穩(wěn)定以及鋰枝晶生長失控等問題。為解決上述問題，兼具有機官能團與烷氧基團的硅烷偶聯(lián)劑（SCAs）已成為提升LMB性能的首選關鍵材料之一，并被廣泛應用于界面粘合促進劑領域。具體而言，通過將各類SCAs引入人工SEI層、液態(tài)電解質(zhì)、隔膜及固態(tài)復合電解質(zhì)體系，已實現(xiàn)鋰離子電池的長期穩(wěn)定循環(huán)。本文系統(tǒng)綜述了SCAs在鋰電池設計與應用領域的最新進展，旨在揭示其結構-功能關系及其在優(yōu)化電池性能中的關鍵作用。此外，本文還闡述了SCAs在鋰電池中擴大應用面臨的現(xiàn)有挑戰(zhàn)及未來前景。最終，作者期望本綜述能為多功能SCAs的設計提供理論指導，并激勵研究者進一步探索SCAs在儲能系統(tǒng)中的應用潛力。
Lithium metal batteries (LMBs) using metallic lithium have garnered considerable attention as a prominent battery technology with high energy density. Nonetheless, the commercialization of LMBs has been hindered by rapid capacity decay and potential safety risks. These impediments stem from challenges during cycling processes, including unstable solid electrolyte interface (SEI) layer and uncontrollable lithium dendrites growth. To tackle the above-mentioned issues, silane coupling agents (SCAs), which contain both organic functional groups and alkoxy groups, have emerged as one of the preferred pivotal materials for enhancing LMBs performance, and is seen as a popular interface adhesion promoter. Specifically, by incorporating various SCAs into the artificial SEI layer, the liquid electrolyte, the separator, and the solid-state composite electrolyte, stable long-term cycling of LMBs has been achieved. This review comprehensively summarizes and discusses the latest advancements in the design and application of SCAs into LMBs, aiming to reveal both the structure-function relationship and the key role in optimizing the performance of LMBs. Moreover, existing challenges and future prospects for the expanded utilization of SCAs in LMBs are provided. Ultimately, the authors envisage that this review can provide theoretical guidance for the design of multifunctional SCAs, and inspire researchers to further explore the potential of SCAs applied to energy storage systems.
Schematic illustration of SCAs and their applications in advanced LMBs, including artificial SEI layer, LEs, separators, and SCEs.
