A5101481618- Advanced Sensor and Energy Harvesting Materials
- Innovative Energy Harvesting Technologies
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Energy Harvesting in Wireless Networks
- Conducting polymers and applications
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Wireless Power Transfer Systems
- Advanced Battery Technologies Research
- Graphene research and applications
- Electrohydrodynamics and Fluid Dynamics
- Gas Sensing Nanomaterials and Sensors
- Carbon Nanotubes in Composites
- Transition Metal Oxide Nanomaterials
- Porphyrin and Phthalocyanine Chemistry
- Electrocatalysts for Energy Conversion
- Advanced Fiber Optic Sensors
- Electric Power Systems and Control
- Tactile and Sensory Interactions
- Industrial Engineering and Technologies
- Pulsed Power Technology Applications
- High-Voltage Power Transmission Systems
- Power Systems and Technologies
- Magnetic Field Sensors Techniques
Tsinghua University
2019-2024
University of Delaware
2012-2017
Columbia University
2016
Northwestern Polytechnical University
2009-2010
A robust and efficient non-precious metal catalyst for hydrogen evolution reaction is one of the key components carbon dioxide-free production. Here we report that a hierarchical nanoporous copper-titanium bimetallic electrocatalyst able to produce from water under mild overpotential at more than twice rate state-of-the-art carbon-supported platinum catalyst. Although both copper titanium are known be poor catalysts, combination these two elements creates unique copper-copper-titanium hollow...
A stretchable carbon nanotube (CNT) fiber based wire-shaped supercapacitor is fabricated using a prestraining-then-buckling approach. At tensile strains from 0% to 100% or after 20 mechanical stretching-releasing cycles with maximum strain of 100%, the electrochemical properties are not reduced but rather somewhat improved. This may have implications for integration supercapacitors wearable, miniaturized, and portable electronic devices.
While the emerging wire-shaped supercapacitors (WSS) have been demonstrated as promising energy storage devices to be implemented in smart textiles, challenges achieving combination of both high mechanical stretchability and excellent electrochemical performance still exist. Here, an asymmetric configuration is applied WSS, extending potential window from 0.8 1.5 V, tripled density doubled power compared its counterpart while accomplishing up 100% through prestrainning-then-buckling...
The ever-increasing demand of electricity storage is a growing challenge among broad range renewable energy sources. development high-energy devices has been one the most important research areas in modern days. In particular, rechargeable batteries and electrochemical capacitors are recognized as primary power sources for applications from portable electronic to electric vehicles. order emerging flexible/stretchable electronics, themselves must be able accommodate high levels deformation...
A three-dimensional (3D) nitrogen-doped multiwall carbon nanotube (N-MWCNT) sponge possessing junctions induced by both nitrogen and sulfur was synthesized chemical vapor deposition (CVD). The formation of "elbow" as well "welded" junctions, which are attributed to the synergistic effect dopant promoter, plays a critically important role in 3D sponges. To best our knowledge, this is first report showing synthesis macroscale N-MWCNT Most importantly, diameter can be simply controlled varying...
An important requirement of battery anodes is the processing step involving formation solid electrolyte interphase (SEI) in initial cycle, which consumes a significant portion active lithium ions. This more critical nanostructured with high specific capacity, such as Si and Sn, due to their surface area large volume change. Prelithiation presents viable approach address loss. However, stability prelithiation reagents big issue low potential chemical reactivity toward O2 moisture. Very...
Substantial differences in charge storage mechanisms exist between dielectric capacitors (DCs) and electrochemical (ECs), resulting orders of magnitude difference stored density them. However, if ionic diffusion, the major transport mechanism ECs, is confined within nanoscale dimensions, Helmholtz layers diffusion will overlap, dismissible diffusion. An interesting contradiction appreciable energy unrecognizable observed solid-state made from reduced graphene oxide films that challenge...
This work reports a novel and standard metric of plot to evaluate the electrostatic generator's output performance under air breakdown limitation proposes strategy extend for achieving ultrahigh power generation.
Mesoporous LaNiO3 (LNO)/NiO electrodes for thin film supercapacitors have been developed from a sol–gel precursor using polyethylene glycol 1000 (PEG 1000) as template. It is the first time that LNO/NiO films reported electrochemical electrodes. Electrochemical measurements in an aqueous electrolyte (1 M Na2SO4) show areal specific capacitances of about 9.5 mF cm−2 and 1.85 at scan rates 0.1 V s−1 100 s−1, respectively. The shows quasi-rectangular curve even ultrahigh scan-rate which much...
Advanced electrode materials with bendability and stretchability are critical for the rapid development of fully flexible/stretchable lithium‐ion batteries. However, sufficiently stretchable battery is still underdeveloped that one biggest challenges preventing from realizing deformable power sources. Here, a low‐temperature hydrothermal synthesis cathode material reported by in situ growth LiMn 2 O 4 (LMO) nanocrystals inside 3D carbon nanotube (CNT) film networks. The LMO/CNT composite has...
Abstract Solar panels often suffer from dust accumulation, significantly reducing their output, especially in desert regions where many of the world's largest solar plants are located. Here, an autonomous removal system for panels, powered by a wind‐driven rotary electret generator is proposed. The applies high voltage between one panel's output electrode and upper mesh to generate strong electrostatic field. It discovered that particles on insulative glass cover panel can be charged under...
Cobalt phthalocyanine (CoPc) assemblies are prepared using several kinds of multiwalled carbon nanotube (MWCNT) templates by in situ solid synthesis a muffle furnace. The products characterized infrared spectroscopy, scanning electron microscopy, X-ray diffraction, photoelectron and differential thermal analysis-thermogravimetry. electrocatalytic activity the obtained MWCNT-templated CoPc is measured cyclic voltammograms an oxygen-saturated 0.5 M H2SO4. results show that have different...
Laser-induced photo-chemical synthesis of SnO2 nanotubes has been demonstrated by employing a nanoporous polycarbonate membrane as template. The nanotube diameter can be controlled the template while length tuned laser parameters and reaction duration. microstructure characterization indicates that they consist mesoporous structures with sub 5 nm size nanocrystals connected twinning structure. application an anode material in lithium ion batteries also explored, exhibited high capacity...