多硫化物
锆
金属有机骨架
膜
金属
基质(化学分析)
材料科学
化学工程
化学
吸附
无机化学
有机化学
工程类
冶金
复合材料
电极
生物化学
物理化学
电解质
作者
Wen‐Qing Lu,Zhenfeng Pang,Aran Lamaire,Fu Liu,Shan Dai,Moisés L. Pinto,Rezan Demir‐Cakan,Kong Ooi Tan,Véronique Van Speybroeck,Vanessa Pimenta,Christian Serre
标识
DOI:10.1002/smsc.202300339
摘要
Lithium–sulfur batteries are considered as promising candidates for next‐generation energy storage devices for grid applications due to their high theoretical energy density. However, the inevitable shuttle effect of lithium polysulfides and/or dendrite growth of Li metal anodes hinder their commercial viability. Herein, the microporous Zr fumarate metal–organic framework (MOF)‐801(Zr) is considered to produce thin (≈15.6 μm, ≈1 mg cm 2 ) mixed‐matrix membranes (MMM) as a novel interlayer for Li–S batteries. It is found that the MOF‐801(Zr)/C/PVDF‐HFP composite interlayer facilitates Li + ions diffusion, and anchors polysulfides while promoting their redox conversion effectively. It is demonstrated that MOF‐801 effectively trapped polysulfides at the cathode side, and confirmed for the first time the nature of the interaction between the adsorbed polysulfides and the host framework, through a combination of solid‐state nuclear magnetic resonance and molecular dynamics simulations. The incorporation of MOF‐801(Zr)/C/PVDF‐HFP MMM interlayer results in a notable enhancement in the initial capacity of Li–S batteries up to 1110 mA h g −1 . Moreover, even after 50 cycles, a specific capacity of 880 mA h g −1 is delivered.
科研通智能强力驱动
Strongly Powered by AbleSci AI