Details

Autor(en) / Beteiligte

• Fan, Linlin
• Li, Matthew
• Li, Xifei
• Xiao, Wei
• Chen, Zhongwei
• Lu, Jun

Titel

Interlayer Material Selection for Lithium-Sulfur Batteries

Ist Teil von

• Joule, 2019-02, Vol.3 (2), p.361-386

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Sulfur cathode offers a high theoretical specific capacity of 1,675 mAh g−1 and a high specific energy of 2,600 Wh kg−1 when implemented in lithium-sulfur batteries (LSBs). Moreover, sulfur is the redundant by-product of the petroleum industry, ensuring the low cost of LSBs. These features make LSBs particularly competitive among next-generation energy storage systems. However, the sulfur cathode suffers from several challenges such as a large volume change, low electrical conductivity of sulfur, as well as the polysulfide shuttle effect, which result in low utilization and loss of cathode active materials. Insertion of membranes (or so-called interlayers) between the separator and cathode has been demonstrated as a promising approach to alleviate these issues. In this review, recent progress regarding the advanced interlayer systems are summarized. Specifically, we generalize the different types of interlayers, and the operating mechanisms and widespread availability of interlayers in LSBs are concluded. Furthermore, the scientific/technical challenges and perspective are presented. [Display omitted] Sulfur, an earth-abundant material, can react with metallic Li and deliver a high theoretical specific energy of 2,600 Wh kg−1 and specific capacity of 1,675 mAh g−1 in lithium-sulfur batteries (LSBs). However, the low conductivity of sulfur and discharge products leads to poor electrochemical performance, the dissolution of lithium polysulfides triggers the shuttle effect along with side reactions on the lithium anode, and the large volume change of sulfur usually results in irreversible structural destruction with a decrease of mechanical integrity and the subsequent rapid capacity decay of the electrode. Insertion of interlayers between the separator and the sulfur cathode has been demonstrated to be a promising approach to alleviate these issues. Aiming to get a deeper understanding of interlayers, the operating mechanisms and widespread availability of interlayers in LSBs are discussed in this review. The interlayers are generalized into the different types (conductive and non-conductive). The specific features and parameters of interlayers, which are general design rules for the functional interlayers in LSBs, are summarized. Moreover, the great challenges to practical applications of LSBs are proposed. This work provides guidance for future research on building high-performance LSBs. This review generalizes the different types of interlayers (conductive and non-conductive), the operating mechanisms, and widespread availability of interlayers in lithium-sulfur batteries (LSBs). The specific features and parameters of interlayers, which are the general design principles for functional interlayers in LSBs, are summarized. The great challenges to practical applications of LSBs are proposed. The rational design of interlayers in proper combination with valid cathode materials contribute to high performance of cells.