A5030747229- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Supercapacitor Materials and Fabrication
- Solar-Powered Water Purification Methods
- Advanced Materials and Mechanics
- Energy Harvesting in Wireless Networks
- Conducting polymers and applications
- MXene and MAX Phase Materials
- Extraction and Separation Processes
- Electrospun Nanofibers in Biomedical Applications
- Tactile and Sensory Interactions
- Advanced Battery Technologies Research
- Nanomaterials and Printing Technologies
- Micro and Nano Robotics
- Thermal Expansion and Ionic Conductivity
- Advanced Memory and Neural Computing
- Iron oxide chemistry and applications
- Electrocatalysts for Energy Conversion
- Surface Modification and Superhydrophobicity
- Electrochemical Analysis and Applications
- Metamaterials and Metasurfaces Applications
- Covalent Organic Framework Applications
- Advanced Thermoelectric Materials and Devices
- Advanced battery technologies research
Hong Kong Polytechnic University
2020-2024
Korea University
2018-2023
Seoul Institute
2019-2020
Government of the Republic of Korea
2019-2020
The progress of spontaneous energy generation from ubiquitous moisture is hindered the low output current and intermittent operating voltage moisture-electric generators. Herein a novel efficient ionic hydrogel generator (IHMEG) developed by rational combination poly(vinyl alcohol), phytic acid, glycerol-water binary solvent. Thanks to synergistic effect notable moisture-absorption capability fast ion transport in network, single IHMEG unit 0.25 cm2 can continuously generate direct-current...
Abstract Moisture-electric generators (MEGs) has emerged as promising green technology to achieve carbon neutrality in next-generation energy suppliers, especially combined with ecofriendly materials. Hitherto, challenges remain for MEGs direct power source practical applications due low and intermittent electric output. Here we design a MEG high direct-current electricity by introducing polyvinyl alcohol-sodium alginate-based supramolecular hydrogel active material. A single unit can...
Abstract In this work, a novel vacuum-assisted strategy is proposed to homogenously form Metal–organic frameworks within hollow mesoporous carbon nanospheres (HMCSs) via solid-state reaction. The method applied synthesize an ultrafine CoSe 2 nanocrystal@N-doped matrix confined HMCSs (denoted as @NC/HMCS) for use advanced anodes in high-performance potassium-ion batteries (KIBs). approach involves solvent-free thermal treatment Co-based zeolitic imidazolate framework (ZIF-67) the HMCS...
Two-dimensional (2D) MXenes are promising as electrode materials for energy storage, owing to their high electronic conductivity and low diffusion barrier. Unfortunately, similar most 2D materials, MXene nanosheets easily restack during the preparation, which degrades electrochemical performance of MXene-based materials. A novel synthetic strategy is proposed converting into restacking-inhibited three-dimensional (3D) balls coated with iron selenides carbon. This involves preparation...
Human backbone-like CoMoS<sub>3</sub>@N-doped carbon nanostructures with multiple voids are successfully prepared by a metal–organic framework-based strategy and applied as anode materials for sodium ion batteries.
Potassium-ion batteries (KIBs) are considered as promising alternatives to lithium-ion owing the abundance and affordability of potassium. However, development suitable electrode materials that can stably store large-sized K ions remains a challenge. This study proposes facile impregnation method for synthesizing ultrafine cobalt-iron bimetallic selenides embedded in hollow mesoporous carbon nanospheres (HMCSs) superior anodes KIBs. involves loading metal precursors into HMCS templates using...
Piezoelectric catalysis (piezocatalysis) is a physical/chemical process that utilizes piezoelectric potential for accelerating chemical reactions, in which ubiquitous mechanical energies nature are used various applications, e.g., treating organic water pollutants. Despite the high efficiency achieved by piezocatalytic powders, particles tend to diffuse systems and hard be separated, thus causing secondary pollution. Herein, free‐standing foam designed fabricated, composed of BaTiO 3...
Summary Sodium‐ion batteries (SIBs) and potassium‐ion (KIBs) have received much attention as next‐generation energy storage systems owing to the abundance. Nevertheless, they face great challenges in design of optimum electrode materials for practical applications. Herein, we prepared a unique two‐dimensional structured composite consisting N‐doped carbon‐coated CoSe 2 nanocrystals MXene nanosheets (CoSe @NC/MX) efficient electrochemical Na‐ K‐ion storage. In this strategy, Co‐based zeolitic...
Abstract Polymer plastic crystal electrolytes (PPCEs) have garnered significant attention for addressing the challenges associated with succinonitrile (SN), including its inadequate mechanical properties and side reactions electrodes. However, a comprehensive investigation of influence molecular structure polymer network on states SN within subsequent impact ionic conductivities remains largely unexplored. To shed light this critical aspect, binding energy between moiety is investigated as...
Abstract Recently the ever‐increasing demand for wearable electronics has greatly triggered development of flexible strain sensors. However, it is still challenging to simultaneously achieve high sensitivity, wide working range, and good wearability. Herein, we developed a highly stretchable fiber sensor based on wet‐spun porous polyurethane (PU) fiber, especially unique conductive network dual silver (Ag)/carbon black (CB) layers constructed. Under strain, rapid crack propagation brittle Ag...
This work presents the unique advantage of textiles in constructing piezocatalytic platforms. The mesoporous and intertwined textile could amplify striking force water flow, by which piezocatalysis under low-frequency flow is achieved.
Abstract Soft actuators driven by pneumatic or electric means are heavy and clumsy with physical connections, which hinders their applications in human–machine interactive, wearable, biomedical fields. Herewith, a light fabric bimorph actuator is reported that wirelessly optical, thermal, magnetic energy sources. Being fabricated laminating electrically conductive biaxially oriented polypropylene film, the show large bending curvature of 0.75 cm −1 optical stimulus 0.55 stimulus, response...
The search for promising anode materials with optimum compositions use in lithium ion batteries (LIBs) is still underway.
Herein, unique FeSe2@C nanorods interconnected by nitrogen-doped graphene nanosheets (FeSe2@C/NG) were successfully prepared using Fe-based metal-organic framework (MOF) as sacrificial templates. During the thermal treatment in an inert atmosphere, FeSe2 nanoparticles formed situ when selenium reacted with Fe species MOF. The organic simultaneously transformed into a conductive carbon material. After combining N-doped nanosheets, obtained FeSe2@C/NG composites showed improved reversible...