A5068768532- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Thermal Expansion and Ionic Conductivity
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Inorganic Chemistry and Materials
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Conducting polymers and applications
- Advanced Photocatalysis Techniques
- Extraction and Separation Processes
- Semiconductor materials and interfaces
- Fuel Cells and Related Materials
- Advanced Materials Characterization Techniques
Tsinghua University
2018-2024
Tsinghua–Berkeley Shenzhen Institute
2020-2023
University Town of Shenzhen
2019-2020
Abstract High-temperature sodium–sulfur batteries operating at 300–350 °C have been commercially applied for large-scale energy storage and conversion. However, the safety concerns greatly inhibit their widespread adoption. Herein, we report a room-temperature battery with high electrochemical performances enhanced by employing “cocktail optimized” electrolyte system, containing propylene carbonate fluoroethylene as co-solvents, highly concentrated sodium salt, indium triiodide an additive....
Abstract Nickel-rich layered oxide cathodes promise ultrahigh energy density but is plagued by the mechanical failure of secondary particle upon (de)lithiation. Existing approaches for alleviating structural degradation could retard pulverization, yet fail to tune stress distribution and root out formation cracks. Herein, we report a unique strategy uniformize in via Kirkendall effect stabilize core region during electrochemical cycling. Exotic metal/metalloid oxides (such as Al 2 O 3 or SiO...
Abstract Nonuniform local electric field and few nucleation sites on the reactive interface tend to cause detrimental lithium (Li) dendrites, which incur severe safety hazards hamper practical application of Li metal anodes in batteries. Herein, a carbon nanofiber (CNF) mat decorated with ultrafine titanium nitride (TiN) nanoparticles (CNF‐TiN) as both current collector host material is reported for anodes. Uniform deposition achieved by synergetic effect lithiophilic TiN 3D CNF...
Abstract Security risks of flammability and explosion represent major problems with the use conventional lithium rechargeable batteries using a liquid electrolyte. The application solid‐state electrolytes could effectively help to avoid these safety concerns. However, integrating into all‐solid‐state is still huge challenge mainly due high interfacial resistance present in entire battery, especially at interface between cathode electrolyte pellet interfaces inside cathode. Herein, recent...
Abstract Developing resource‐abundant and sustainable metal‐free bifunctional oxygen electrocatalysts is essential for the practical application of zinc–air batteries (ZABs). 2D black phosphorus (BP) with fully exposed atoms active lone pair electrons can be promising electrocatalysts, which, however, suffers from low catalytic activity poor electrochemical stability. Herein, guided by density functional theory (DFT) calculations, an efficient electrocatalyst demonstrated via covalently...
Abstract A key challenge for solid-state-batteries development is to design electrode-electrolyte interfaces that combine (electro)chemical and mechanical stability with facile Li-ion transport. However, while the solid-electrolyte/electrode interfacial area should be maximized facilitate transport of high electrical currents on one hand, other this minimized reduce parasitic reactions promote overall cell stability. To improve these aspects simultaneously, we report use an inorganic coating...
This review highlights the advances and challenges in MOF-derived electrolytes for energy storage applications.
Exploring synergy effects of the composite metal anode and electrolyte modification as an effective strategy to fabricate ultra-stable Na-metal batteries.
Abstract Suppressing the dendrite formation and managing volume change of lithium (Li) metal anode have been global challenges in batteries community. Herein, a duplex copper (Cu) foil with an ant‐nest‐like network dense substrate is reported for ultrastable Li anode. The Cu fabricated by sulfurization thick subsequent skeleton self‐welding procedure. Uniform deposition achieved 3D interconnected architecture lithiophilic surface self‐welded skeleton. sufficient space porous layer enables...
Abstract Constructing a stable solid electrolyte interphase (SEI) on high‐specific‐capacity silicon (Si) anode is one of the most effective methods to reduce crack SEI and improve cycling performance Si anode. Herein, authors construct reinforced gradient nanoparticles by an in‐situ thiol‐ene click reaction. Mercaptopropyl trimethoxysilane (MPTMS) with thiol functional groups (SH) first grafted through condensation reaction, which then covalently bonds vinylene carbonate (VC) form uniform...
The energy density of commercial lithium (Li) ion batteries with graphite anode is reaching the limit. It believed that directly utilizing Li metal as without a host could enhance battery's to maximum extent. However, poor reversibility and infinite volume change hinder realistic implementation in battery community. Herein, commercially viable hybrid Li-ion/metal realized by coordinated strategy symbiotic prelithiated cathode. To be specific, scalable template-removal method developed...
Abstract The formation of severe dendritic sodium (Na) microstructure reduces the reversibility anode and further hinders its practical implementation. In this work, an ionic‐electronic dual‐conducting (IEDC) scaffold composed Na 3 P carbon nanotubes is in situ developed by a scalable strategy with subsequent alloying reaction, for realizing dendrite‐free deposition under high current density large areal capacity. formed sodiophilicity not only sets up hierarchically efficient ionic...
Herein, a novel sandwichlike host with expandable accommodation and gradient characteristics of lithiophilicity conductivity is prepared by constructing reduced graphene oxide (rGO)/SiO2/rGO intercalated structure on the basis electrospraying coating an additional PVDF-HFP layer top surface. This electrode enables preferential, ordered, uniform Li deposition in SiO2-embedded interlayer space. The dendrite growth isolated are suppressed combined rGO/PVDF-HFP robust, flexible, floatable...
In recent years, lots of efforts have been applied to improve the initial Coulombic efficiency (ICE) lithium-ion batteries (LIBs), among which prelithiation is considered be one most promising schemes. Here we report a modified LixSi with high lithium reserves and great environmental adaptability as reagent, can make up for capacity loss negative electrode in first cycle. Through chemical reaction between aluminum isopropoxide LixSi, protective layer consisting LixAlySiOz/Li2O formed on...
Aluminum (Al) foil serving as the most widely used cathode current collector for lithium-ion batteries (LIBs) is still not flawless to fulfill increasing demand of rechargeable energy storage systems. The limited contact area and weak adhesion material well local corrosion during long-term operations could deteriorate performance LIBs with a higher working voltage. Herein, reduced graphene oxide (RGO)-modified Al (RGO/Al) developed via electrospraying increase interfacial inhibit anodic...
Cyclized polyacrylonitrile (cPAN) with decently flexible, elastic, and conductive properties is a promising substrate or binder material for flexible devices. However, it infeasible to accommodate the large volume expansion contribute exceptional rate capability of silicon anodes in lithium-ion batteries only counting on limited elasticity conductivity cPAN. Herein, we report robust silicon/carbon-cPAN-graphene (SC-CP-G) composite membrane excellent flexibility based multifunctional...