A5103247498- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Covalent Organic Framework Applications
- Electrocatalysts for Energy Conversion
Hefei National Center for Physical Sciences at Nanoscale
2023-2024
University of Science and Technology of China
2023-2024
Collaborative Innovation Center of Chemistry for Energy Materials
2024
Covalent organic framework (COF) materials with porous character and robust structure have significant applied implications for K-ion battery (KIB) anodes, but they are limited by the low reversible capacity inferior rate capability. Here, based on theoretical calculations, we identified that a bulk COF featuring numerous pyrazines carbonyls in π-conjugated periodic skeleton could provide multiple accessible redox-active sites high-performance potassium storage. Its surface-dominated storage...
Abstract The most successful lithium‐ion batteries (LIBs) based on ethylene carbonate electrolytes and graphite anodes still suffer from severe energy power loss at temperatures below −20 °C, which is because of high viscosity or even solidification electrolytes, sluggish de‐solvation Li + the electrode surface, slow transportation in solid electrolyte interphase (SEI). Here, a coherent lithium phosphide (Li 3 P) coating firmly bonding to surface effectively address these challenges...
Electrocatalysis is generally confined to dynamic liquid–solid and gas–solid interfaces rarely applicable in solid-state reactions. Here, we report a paradigm shift strategy exploit electrocatalysis accelerate reactions the context of lithium-ion batteries (LIBs). We employ heteroatom doping, specifically boron for silicon sulfur phosphorus, catalyze electrochemical Li-alloying electrode materials. The preferential cleavage polar dopant-host chemical bonds upon lithiation triggers bond...
Abstract Phosphorus‐based anode materials have attracted considerable attention due to their high theoretical capacity, safe operational potential, and favorable redox chemistry for diverse alkali metal‐ion storage applications. Their excellent performance in lithium makes them promising candidates fast‐charging batteries. However, challenges such as complex reactions, substantial volume expansion during lithiation, vulnerability oxidation, the lack of a mature mass production process hinder...
Sulfur redox reactions render lithium−sulfur (Li−S) batteries with an energy density of > 500 Wh kg−1 but suffer a low practical capacity and fast fade due to sluggish SRR kinetics, which lies in the complex reaction process that involves series intermediates proceeds via cascade reaction. Here, we present Pt-Cu dual-atom catalyst (Pt/Cu-NG) as electrocatalyst for sulfur reactions. Pt/Cu-NG enabled rapid conversion soluble polysulfide into insoluble Li2S2/Li2S, consequently, it prevented...
Li-alloying reactions facilitate the incorporation of a large number Li atoms into crystalline structures electrodes, such as black phosphorus (BP). However, inevitably induce multistep phase transitions characterized by drastic atomic rearrangements and lattice collapse. Despite many theoretical experimental studies on alloying mechanisms, long-term debates persist regarding intermediate phases, accurate pathways transitions, formation specific configurations, alloying/dealloying...
Phosphorus-carbon composites in alkali metal-ion batteries benefit from P-C bonds, enhancing stability and performance. Rapid bond detection is crucial. X-ray photoelectron spectroscopy (XPS), balancing convenience accuracy, was chosen this study for its efficiency analyzing energies, aiding the quick identification of these bonds phosphorus-carbon anodes.
Lithium metal batteries (LMB) are vital devices for high-energy-density energy storage, but Li anode is highly reactive with electrolyte and forms uncontrolled dendrite that can cause undesirable parasitic reactions thus poor cycling stability raise safety concerns. Despite remarkable progress made to partly solve these issues, the still plate at electrode/electrolyte interface where formation invariably occur. Here we demonstrate inward-growth plating of into a foil while avoiding surface...