材料科学
插层(化学)
阴极
水溶液
动力学
电化学
化学工程
离子
无机化学
纳米技术
电极
化学
有机化学
工程类
物理化学
物理
量子力学
作者
Huanyan Liu,Jian‐Gan Wang,Wei Hua,Zongyuan You,Zhidong Hou,Junchang Yang,Chunguang Wei,Feiyu Kang
标识
DOI:10.1016/j.ensm.2020.12.010
摘要
Rechargeable aqueous zinc-ion batteries hold great prospects in grid-level energy storage due to their virtues of good safety, low cost and eco-friendliness. However, the sluggish intercalation kinetics of divalent Zn2+ makes the exploration of a suitable Zn2+-host cathode being a formidable challenge. In this work, we unveil the crucial role of crystal water on boosting the Zn2+ intercalation kinetics of layered MoS2 host. The crystal water molecules could function as structural pillars to enlarge the interlayer distance of MoS2 and improve the surface hydrophilicity. Notably, a substantially-enhanced Zn2+ intercalation kinetics is realized by accelerating the charge-transfer transportation and Zn2+ diffusivity. Consequently, the hydrated MoS2 nanosheets enable efficacious Zn2+ insertion/extraction to achieve a high specific capacity of 182 mAh g−1 at 0.1 A g−1 and superior rate/cycling performance. The present study will enlighten the water implantation strategy to engineering hydrated cathode materials toward high-performance aqueous batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI