A5090815735- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
Cornell University
2022-2024
Aqueous zinc batteries are attracting interest because of their potential for cost-effective and safe electricity storage. However, metallic exhibits only moderate reversibility in aqueous electrolytes. To circumvent this issue, we study Zn able to form nanometric interphases at the metal/liquid electrolyte interface, composed an ion-oligomer complex. In Zn||Zn symmetric cell studies, report highly reversible cycling high current densities capacities (e.g., 160 mA cm-2; 2.6 mAh cm-2). By...
MnO2 is a versatile, cost-effective transition metal oxide that has attracted interest in multiple domains, including as an active cathode material or catalyst for electrochemical energy storage batteries. Hydrothermal methods are among the most efficient approaches synthesis. These enable facile, versatile production of any its crystalline phases (α, β, δ, etc.), with dominant product being determined by reaction conditions such precursor concentration and temperature. benefits...
Aqueous alkaline zinc batteries are of scientific and technological interest because the potential they offer for cost-effective safe storage electrical energy. Poor electrochemical reversibility shape change Zn anode, propensity to become passivated by surface oxides hydroxide films upon prolonged exposure electrolyte, electroreduction water well-studied but remain unsolved challenges. Here, we create study transport properties precise, spatially tunable zwitterionic polymer interphases...
Solid-state electrolytes (SSEs) are challenged by complex interfacial chemistry and poor ion transport through the interfaces they form with battery electrodes. Here, we investigate a class of SSE composed micrometer-sized lithium oxide (Li 2 O) particles dispersed in polymerizable 1,3-dioxolane (DOL) liquid. Ring-opening polymerization (ROP) DOL Lewis acid salts inside cell produces polymer-inorganic hybrid gradient properties on both particle length scales. These sustain stable...
Aqueous Zn batteries have recently emerged as promising candidates for large-scale energy storage, driven by the need a safe and cost-effective technology with sufficient density readily accessible electrode materials. However, cycle life of been limited inherent chemical, morphological, mechanical instabilities at electrode–electrolyte interface where uncontrolled reactions occur. To suppress reactions, we designed crystalline polymer interphase both electrodes, which simultaneously...
Aqueous zinc flow batteries (AZFBs) with high power density and areal capacity are attractive, both in terms of cost safety. A number fundamental challenges associated out-of-plane growth undesirable side reactions on the anode side, as well sluggish reaction kinetics active material loss cathode limit practical deployment these batteries. We investigated artificial interphases created using a simple electrospray methodology strategy for addressing each challenges. The effectiveness full...
Polymers are known to adsorb spontaneously from liquid solutions in contact with high-energy substrates form configurationally complex, but robust phases that often exhibit higher durability than might be expected the individual physical bonds formed substrate. Rational control of physical, chemical, and transport properties such interphases has emerged as a fundamental opportunity for scientific technological advances energy storage technology requires in-depth understanding conformation...
We explore the challenges and opportunities for electrochemical energy storage technologies that harvest active materials from their surroundings. Progress hinges on advances in chemical engineering science related to membrane design; control of mass transport, reaction kinetics precipitation at electrified interfaces; regulation electrocrystallization metals through substrate design.
Abstract Polymers are known to adsorb spontaneously from liquid solutions in contact with high‐energy substrates form configurationally complex, but robust phases that often exhibit higher durability than might be expected the individual physical bonds formed substrate. Rational control of physical, chemical, and transport properties such interphases has emerged as a fundamental opportunity for scientific technological advances energy storage technology requires in‐depth understanding...
Rechargeable metal–air batteries operated in ambient air fail as a result of complex anode surface reactions. Interphases composed metallic In protect Li anodes, enabling Li–air to operate air.
Polymers have been used as additives in the liquid electrolytes typically for secondary batteries that utilize metals anode. Such are conventionally argued to improve long-term anode performance by suppressing morphological and hydrodynamic instabilities thought be responsible out-of-plane dendritic metal deposition during battery charging. More recent studies reported polymer provide even more fundamental mechanisms stabilizing electrodeposition through their ability regulate electrodeposit...