文章信息/Info

Title:

Functional Design and Research Progress of Carbon Materials for Lithium-Sulfur Batteries

作者:

陳亞煒; 牛樹章; 潘鄭澤; 呂 偉

清華大學深圳研究生院 深圳市石墨烯重點實驗室，清華伯克利深圳學院（TBSI），

Author(s):

CHEN Yawei;  NIU Shuzhang;  PAN Zhengze;  LV Wei  

Shenzhen Key Laboratory for Graphene-based Materials,Graduate School at Shenzhen, Tsinghua University, Tsinghua-Berkeley Shenzhen Institute (TBSI),

關鍵詞:

鋰硫電池; 功能化設計; 夾層設計; 優化隔膜; 碳質材料  ;  

DOI:

10.7502/j.issn.1674-3962.2016.12.04

文獻標志碼:

A

摘要:

鋰離子電池等儲能器件已被應用于電子設備和電動汽車中，但其低的理論容量已不能滿足需求。鋰硫電池因其具有高的理論比容量（1672 mAh·g-1），有望滿足高能量密度的需求，但是鋰硫電池還存在多硫化物的穿梭、硫導電性差等問題，阻礙了它的商業化應用。針對以上問題，不僅可以從正極材料的結構設計出發，也可以從電池的整體結構設計入手尋求解決的方法。評述了碳質材料的功能化設計在正極、正極與隔膜間的夾層設計、隔膜的優化以及新型隔膜中的研究進展，分析了結構、材料與鋰硫電池性能之間的關系，指出了鋰硫電池中碳質材料的發展方向。

Abstract:

Although lithium-ion battery has been widely used in electronic devices and electric vehicles, its low theoretical specific capacity is not able to meet the requirement of high energy density. Lithium sulfur batteries, with high theoretical capacity (1672 mAh·g-1), possess the potential to be commercialized. However, lithium�瞫ulfur batteries still face lots of challenges such as the shuttle of high order polysulfides and poor conductivity of sulfur and polysulfides, which hinder their commercial application. To solve these problems, solutions can be found from the structural design of not only the cathode materials, but also the battery system. This review introduces recent progress on the functional design of carbon materials for cathode, interlayer design, separator optimization and new types of separator. The relationship between structure and properties of lithium sulfur batteries has been analyzed, the development directions of lithium�瞫ulfur batteries are prospected.