Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
Department of Materials Science & Engineering, Tsinghua University, Beijing, 100084, China.
Adv Mater. 2016 Nov;28(43):9551-9558. doi: 10.1002/adma.201603401. Epub 2016 Sep 15.
A cooperative interface constructed by "lithiophilic" nitrogen-doped graphene frameworks and "sulfiphilic" nickel-iron layered double hydroxides (LDH@NG) is proposed to synergistically afford bifunctional Li and S binding to polysulfides, suppression of polysulfide shuttles, and electrocatalytic activity toward formation of lithium sulfides for high-performance lithium-sulfur batteries. LDH@NG enables high rate capability, long lifespan, and efficient stabilization of both sulfur and lithium electrodes.
提出了一种由“亲锂”氮掺杂石墨烯骨架和“亲硫”镍铁层状双氢氧化物（LDH@NG）构建的协同界面，以协同提供对多硫化物的双功能 Li 和 S 结合、抑制多硫化物穿梭、以及对形成硫化锂的电催化活性，从而实现高性能锂硫电池。LDH@NG 实现了高倍率能力、长寿命和对硫和锂电极的有效稳定。
