Facile Synthesis of -FePS3 Nanosheets@MXene Composite as a High-Performance Anode Material for Sodiu

来源 :纳微快报(英文) | 被引量 : 0次 | 上传用户:dingyibin1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Searching for advanced anode materials with excel-lent electrochemical properties in sodium-ion battery is essential and imperative for next-generation energy storage system to solve the energy shortage problem. In this work, two-dimensional (2D) ultrathin -FePS3 nanosheets, a typical tary metal phosphosulfide, are first prepared by ultrasonic exfoliation. The novel 2D/2D heterojunction of -FePS3 nanosheets@MXene composite is then successfully synthesized by in situ mixing ultrathin MXene nanosheets with -FePS3 nanosheets. The resultant -FePS3 nanosheets@MXene hybrids can increase the electronic conductivity and specific surface area, assuring excellent surface and interfacial charge transfer abilities. Furthermore, the unique heterojunc-tion endows -FePS3 nanosheets@MXene composite to promote the dif-fusion of -Na+ and alleviate the drastic change in volume in the cyclic process, enhancing the sodium storage capability. Consequently, the few-layered -FePS3 nanosheets uniformly coated by ultrathin MXene provide an exceptional reversible capacity of 676.1 mAh g-1 at the current of 100 mA g-1 after 90 cycles, which is equivalent to around 90.6% of the second-cycle capacity (746.4 mAh g-1). This work provides an original protocol for constructing 2D/2D material and dem-onstrates the -FePS3@MXene composite as a potential anode material with excellent property for sodium-ion batteries.
其他文献
Various types of energy exist everywhere around us, and these energies can be harvested from multiple sources to power micro-/nanoelectronic system and even per
Metal–organic frameworks (MOFs) with angstrom-sized pores are promising functional nanoma-terials for the fabrication of cation permselective mem-branes (MOF-C
Incorporating nitrogen (N) atom in graphene is considered a key tech-nique for tuning its electrical properties. However, this is still a great challenge, and i
Electromagnetic pollution has been causing a series of problems in people’s life, and electromagnetic absorbers with lightweight and broad absorbing bandwidth