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Liquid cell electrochemical TEM: Unveiling the real-time interfacial …
Li metal batteries (LMBs) reveal great application prospect in next-generation energy storage, because of their high energy density and low electrochemical pote.
Microscopic properties of lithium, sodium, and magnesium battery …
Lithium and magnesium exhibit rather different properties as battery anode materials with respect to the phenomenon of dendrite formation which can lead to shor ... JCP-DCP Future of Chemical Physics Lectureship; Contact; Editorial Board; ... Article Navigation. Research Article | November 07 2014. Microscopic properties of …
Voltage hysteresis of lithium ion batteries caused by mechanical stress
The crucial role of mechanical stress in voltage hysteresis of lithium ion batteries in charge–discharge cycles is investigated theoretically and experimentally. A modified Butler–Volmer equation of electrochemical kinetics is proposed to account for the influence of mechanical stresses on electrochemical re
Understanding Li-based battery materials via electrochemical impedance …
Understanding Li-based battery materials via ...
Enhanced performance of Mo2P monolayer as lithium-ion battery …
By means of density functional theory (DFT) computations, we explored the potential of carbon- and nitrogen-doped Mo 2 P (CMP and NMP) layered materials as the representative of transition metal phosphides (TMPs) for the development of lithium-ion battery (LIB) anode materials, paying special attention to the synergistic effects of the dopants. Both …
Running out of lithium? A route to differentiate between capacity losses and active lithium losses in lithium-ion batteries
Active lithium loss (ALL) resulting in a capacity loss (QALL), which is caused by lithium consuming parasitic reactions like SEI formation, is a major reason for capacity fading and, thus, for a reduction of the usable energy density of lithium-ion batteries (LIBs). QALL is often equated with the accumulated
Thermodynamic aspect of sulfur, polysulfide anion and lithium ...
Physical Chemistry Chemical Physics. Thermodynamic aspect of sulfur, polysulfide anion and lithium polysulfide: plausible reaction path during discharge of lithium–sulfur battery ... National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
Potentiometric measurement of entropy change for …
Effective thermal management and tracking of battery degradation are two key challenges in the improved management of battery packs. Entropy change measurement is a non-destructive tool for characterizing both the …
Reducing Overpotential of Lithium–Oxygen Batteries by Diatomic Metal Catalyst Orbital Matching Strategy | The Journal of Physical Chemistry …
Aprotic Li–O2 batteries have sparked attention in recent years due to their ultrahigh theoretical energy density. Nevertheless, their practical implementation is impeded by the sluggish reaction kinetics at the cathode. Comprehending the catalytic mechanisms is pivotal to developing efficient cathode catalysts for high-performance Li–O2 batteries. …
Nanocrystallinity effects in lithium battery materials
Physical Chemistry Chemical Physics. Nanocrystallinity effects in lithium battery materials Aspects of nano-ionics. Part IV ... voltage and charging/discharging rates. In this context we discuss a novel interfacial storage mechanism for lithium which, in the mesoscopic case, forms a bridge between batteries and capacitors.
A Multiweek Experimental Project Bringing Real-World Lithium …
Lithium (Li)-ion batteries have transformed modern life by creating a rechargeable world through their applications in electronics, vehicles, and energy storage. Despite their cutting-edge reputation, the essential chemistry and mechanisms behind batteries are based on principles that have been evolving for over 250 years. It is …
Lithium-ion battery degradation: how to model it
Predicting lithium-ion battery degradation is worth billions to the global automotive, aviation and energy storage industries, to improve performance and safety and reduce warranty liabilities. However, very few published models of battery degradation explicitly consider the interactions between more than tw
Scientists Develop High-Performance Lithium-Ion Battery-Supercapacitor Hybrid Devices----Dalian Institute of Chemical Physics…
The Dalian Institute of Chemical Physics (DICP) is located in the beautiful port city of Dalian, China. In the past half century, research at DICP has closely reflected the economic and scientific needs of China. The Institute has built up an impressive portfolio of ...
Mechanics-based design of lithium-ion batteries: a perspective
From the overall framework of battery development, the battery structures have not received enough attention compared to the chemical components in batteries. The mechanical–electrochemical coupling behavior is a starting point for investigation on battery structures and the subsequent battery design. This p
The effect of water on discharge product growth and chemistry in Li–O 2 batteries …
Understanding what controls Li–O2 battery discharge product chemistry and morphology is key to enabling its practical deployment as a low-cost, high-specific-energy energy conversion technology. Several studies have recently shown that the addition of substantial quantities (hundreds to thousands ppm) of wat
Transport coefficients for ion and solvent coupling. The case of the lithium-ion battery electrolyte | The Journal of Chemical Physics …
As such, the physical-chemical meaning of the results and their application to battery modeling will not be the focus of our discussion here. However, using the lithium battery electrolyte as an example, we will now discuss the single steps of the new procedure and illustrate how they may be used.
Ionic liquid based battery electrolytes using lithium and sodium pseudo-delocalized pyridinium anion salts
The electrolyte salt plays an important role for the overall performance and safety of lithium- and sodium-ion batteries (LIBs and SIBs, respectively). Here, two new lithium and sodium pseudo-delocalized pyridinium anion based salts were used to prepare ionic liquid (IL) based electrolytes. The Li and Na sal
The significance of detecting imperceptible physical/chemical changes/reactions in lithium-ion batteries…
The lifetime of Li-ion batteries (LIBs) is highly dependent on the imperceptible physical/chemical changes/reactions that occur on/between the electrodes and electrolyte. Therefore, reliable and repeatable high-precision detection of the imperceptible changes/reactions is extremely significant. High precisio
Ohm''s law for ion conduction in lithium and beyond-lithium battery …
We show that the proportionality constant in Ohm''s law is given by the product of the ionic conductivity, κ, and the ratio of currents in the presence (i ss) and absence ( i Ω ) of concentration gradients, ρ +. The importance of ρ + was recognized by Evans et al. [Polymer 28, 2324 (1987)].
The reduction behavior of sulfurized polyacrylonitrile (SPAN) in lithium–sulfur batteries …
Lithium–sulfur batteries (LSBs) have attracted attention due to their high theoretical energy density. This and various other advantages, such as the availability and non-toxicity of sulfur, raise interest in LSBs against the background of the energy revolution. However, a polysulfide shuttle mechanism can a
SEI-component formation on sub 5 nm sized silicon nanoparticles in Li-ion batteries…
Silicon is a promising negative electrode for secondary lithium-based batteries, but the electrochemical reversibility of particularly nanostructured silicon electrodes drastically depends on their interfacial characteristics, commonly known as the solid electrolyte interface (SEI). The beneficial origin of
Improvement of desolvation and resilience of alginate binders for …
Si-based anodes in lithium ion batteries (LIBs) have exceptionally high theoretical capacity, but the use of a Si-based anode in LIBs is problematic because the charging–discharging process can fracture the Si particles. Alginate and its derivatives show promise as Si particle binders in the anode. We show t
Designing Temperature-Insensitive Solvated Electrolytes for Low-Temperature Lithium Metal Batteries | Journal of the American Chemical …
Lithium metal batteries face problems from sluggish charge transfer at interfaces, as well as parasitic reactions between lithium metal anodes and electrolytes, due to the strong electronegativity of oxygen donor solvents. These factors constrain the reversibility and kinetics of lithium metal batteries at low temperatures. Here, a …
Graphene-based electrochemical energy conversion and storage: fuel cells, supercapacitors and lithium ion batteries
Graphene has attracted extensive research interest due to its strictly 2-dimensional (2D) structure, which results in its unique electronic, thermal, mechanical, and chemical properties and potential technical applications. These remarkable characteristics of graphene, along with the inherent benefits of a carbon material, make it a promising …
Electronic structure of lithium battery interphase compounds: …
In lithium ion batteries, decomposition of the electrolyte and its associated passivation of the electrode surface occurs at low potentials, resulting in an electronically insulating, but Li-ion conducting, solid electrolyte interphase (SEI).
Ohm''s law for ion conduction in lithium and beyond-lithium battery electrolytes | The Journal of Chemical Physics …
In a battery, the passage of ionic current between the cathode and anode is enabled by the electrolyte. The dependence of the current on the potential drop between the electrodes is at the core of battery design and engineering. 1,2 The kind of device that can be powered by a battery is limited by the maximum current that can be passed safely …
Protracted Relaxation Dynamics of Lithium Heterogeneity in Solid-State Battery Electrodes | The Journal of Physical Chemistry …
The lithium (Li) heterogeneity formed in the composite electrodes has a significant impact on the performance of solid-state batteries (SSBs). Whereas the influence of various factors on the Li heterogeneity, such as (dis)charge currents, ionic and/or electronic conductivity of the constituent materials, and interfacial charge transfer kinetics, …
Transport coefficients for ion and solvent coupling. The case of …
Constituents of a typical lithium-ion battery electrolyte. The yellow lithium-ion to the left has the blue–green hexafluorophosphate ion as a counterion. The solvents are ethylene carbonate (EC) and diethyl carbonate (DEC). The carbonate group occupies the center of DEC. It is more exposed in the EC.
Theoretical study of highly efficient VS 2 -based single-atom catalysts for lithium–sulfur batteries …
Lithium–sulfur (Li–S) batteries have become a research hotspot due to their high energy density. However, they also have certain disadvantages and limitations. To enhance the performance of Li–S batteries, this study focuses on the utilization of transition metal (TM)-embedded vanadium disulfide (VS 2 ) materials as cathode catalysts.
Reversible chemical delithiation/lithiation of LiFePO4: towards a …
Physical Chemistry Chemical Physics. ... Institute of Physics, ... based on which a novel energy storage system — the redox flow lithium-ion battery (RFLB), was devised by integrating the operation flexibility of a redox flow battery and high energy density of a
Understanding Li-based battery materials via electrochemical …
Lithium-based batteries are a class of electrochemical energy storage devices where the potentiality of electrochemical impedance spectroscopy (EIS) for understanding the battery charge...
A continuum of physics-based lithium-ion battery models reviewed
Physics-based electrochemical battery models derived from porous electrode theory are a very powerful tool for understanding lithium-ion batteries, as well as for improving their design and management. Different model fidelity, and thus model complexity, is needed for different applications. For example, in battery design we can …
''Computer vision'' reveals unprecedented physical and chemical …
Then, with funding from Toyota Research Institute, the team started using machine learning tools developed at MIT to dramatically accelerate both battery testing and the process of winnowing down many possible charging methods to find the ones that work best. They also combined conventional machine learning, which looks for patterns in …
Lithium-ion battery electrode properties of hydrogen boride
Recently, hydrogen boride (HB) with a pseudo-two-dimensional sheet structure was successfully synthesized, and it is theoretically predicted to have high potential as a negative electrode material for alkali metal ion batteries, making it a promising new candidate.