Doctor of Philosophy, Fudan University (2017)
Bachelor of Engineering, Sun Yat-Sen University (2012)
- Amphiphilic core-sheath structured composite fiber for comprehensively performed supercapacitor SCIENCE CHINA-MATERIALS 2019; 62 (7): 955–64
Stabilizing lithium into cross-stacked nanotube sheets with ultra-high specific capacity for lithium oxygen battery.
Angewandte Chemie (International ed. in English)
Although lithium-oxygen batteries possess high theoretical energy density and are considered as promising candidates for the next-generation power systems, how to enhance the safety and cycling efficiency of the lithium anodes while maintaining the high energy storage capability remains difficult. Here, we overcome this challenge by cross-stacking aligned carbon nanotubes into porous networks for ultrahigh-capacity lithium anodes to afford high-performance lithium-oxygen batteries. The novel anode shows a reversible specific capacity of 3656 mAh/g, approaching the theoretical capacity of 3861 mAh/g of pure lithium. When this anode is employed for lithium-oxygen full batteries, the cycling stability is significantly enhanced owing to the dendrite-free morphology and stabilized solid electrolyte interface. This work presents a new pathway to high performance lithium-oxygen batteries towards practical applications by designing cross-stacked and aligned structures for one-dimensional conducting nanomaterials.
View details for PubMedID 30575248
Alignment of Thermally Conducting Nanotubes Making High-Performance Light-Driving Motors.
ACS applied materials & interfaces
Light-actuating devices that can produce selective motions at small scales are highly desired for on-demand manipulation. For conventional photothermal motors that mostly encounter the homogenous light-induced heat diffusion at the liquid/air interface, it is challenging to effectively control the actuating direction and enhance the actuating speed. To this end, here, we explore aligned thermally conducting one-dimensional nanomaterials to make light-driving motors where the light-induced heat can be transmitted to the water surface along the length direction of the aligned one-dimensional nanomaterials to generate a localized surface tension gradient for high spatial resolution propulsion. When multiwalled carbon nanotubes were studied as a demonstration, the aligned active layer generated sufficient propulsion to drive a centimeter-sized motor that was 10 000 times higher in mass of the actuating layer on water. In addition, the actuating direction had been accurately controlled by varying the illuminated region of the active aligned nanotube layer. The resulting light-driving motors can move as fast as 4.19 cm/s (or 5.2 body length per second), which exceeded the previous motors based on the light activation.
View details for PubMedID 29999307