Batteries | Free Full-Text | Heat Effects during the Operation of Lead-Acid Batteries …
Thermal events in lead-acid batteries during their operation play an important role; they affect not only the reaction rate of ongoing electrochemical reactions, but also the rate of discharge and self-discharge, length of service life and, in critical cases, can even cause a fatal failure of the battery, known as "thermal runaway." This contribution …
Investigation of carbon-coated silicon oxide phase changes during charge/discharge by oxygen and lithium K-Edge X-ray absorption …
Development in high-capacity batteries has focused on a variety of different aspects, including positive electrodes, negative electrodes, and battery design. We have investigated high-volume negative electrodes using materials such …
Reactivity of Carbon in Lithium–Oxygen Battery Positive Electrodes …
Unfortunately, the practical applications of Li–O2 batteries are impeded by poor rechargeability. Here, for the first time we show that superoxide radicals generated at the cathode during discharge react with carbon that contains activated double bonds or aromatics to form epoxy groups and carbonates, which limits the rechargeability of Li–O2 …
Entropy-increased LiMn2O4-based positive electrodes for fast-charging lithium metal batteries …
Fast-charging, non-aqueous lithium-based batteries are desired for practical applications. In this regard, LiMn2O4 is considered an appealing positive electrode active material because of its ...
Review on Mn-based and Fe-based layered cathode materials for sodium-ion batteries …
Sodium-ion batteries are widely studied due to their abundant sodium resources, widespread distribution, and environmental friendliness. However, due to the large radius of sodium ions, during the charge and discharge process, the cycling performance and rate performance deteriorated seriously, which severely limited the …
Anode vs Cathode: What''s the difference?
BCS-800 series is a modular battery cycling system designed to meet the needs of every level of the battery value chain, from R&D to pilot production, from production testing to quality control. Made up of three core …
Lithium–Oxygen Batteries and Related Systems: …
The mechanisms of O 2 reduction and evolution are considered in the light of recent findings, along with developments in …
Recent Progress on Catalysts for the Positive Electrode of Aprotic Lithium-Oxygen Batteries …
In this review, three main categories of catalyst for the positive electrode of Li-O2 batteries, including carbon materials, noble metals and their oxides, and transition metals and their oxides ...
Detailed studies of a high-capacity electrode material for rechargeable batteries…
Lithium-excess manganese layered oxides, which are commonly described by the chemical formula zLi 2 MnO 3-(1 - z)LiMeO 2 (Me = Co, Ni, Mn, etc.), are of great importance as positive electrode materials for rechargeable lithium batteries. In this Article, Li x Co 0.13 Ni 0.13 Mn 0.54 O 2-δ samples are prepared from Li 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 2 (or …
Deciphering the oxygen absorption pre-edge: a caveat on its application for probing oxygen redox reactions in batteries …
The first commercially successful rechargeable lithium battery3, introduced by the Sony Corporation in 1990, consists of a carbon-based negative electrode, layered LiCoO2 as the positive electrode ...
The role of oxygen in automotive grade lithium-ion battery …
Fig. 1 In the current study, the NCA positive electrodes Fresh, Aged L and Aged H extracted from cells were also investigated in a previous study with a focus on ageing mechanisms automotive cells. 12 Aged electrodes are extracted from cells that performed >900 full cycle equivalents and the capacity retention of the positive electrodes was …
Intermediate honeycomb ordering to trigger oxygen redox chemistry in layered battery electrode …
Sodium-excess metal oxides Na2MO3 are appealing cathode materials for sodium-ion batteries. Here, the authors demonstrate that honeycomb-type cation ordering in Na2RuO3 triggers the oxygen redox ...
The role of oxygen in automotive grade lithium-ion battery …
Using Ni-rich NCA electrodes extracted from electric car battery pack cells, our group has shown that the positive electrode performance is both sensitive towards cycling beyond …
Titanium-based potassium-ion battery positive electrode with …
Here, we report on a record-breaking titanium-based positive electrode material, KTiPO4F, exhibiting a superior electrode potential of 3.6 V in a potassium-ion …
Fabrication of three-dimensional ordered macroporous spinel CoFe 2 O 4 as efficient bifunctional catalysts for the positive electrode …
Three-dimensionally ordered macroporous (3DOM) CoFe<sub>2</sub>O<sub>4</sub> (CFO) catalysts were prepared by using the colloidal crystal templating method to be used as bifunctional catalysts of Li-O<sub>2</sub> battery positive electrodes. In order to study the relationship between the macropore d …
Porous Electrode Modeling and its Applications to Li‐Ion Batteries …
Battery modeling has become increasingly important with the intensive development of Li-ion batteries (LIBs). The porous electrode model, relating battery performances to the internal physical and (electro)chemical processes, is one of the most adopted models in ...
Entropy-increased LiMn2O4-based positive electrodes for fast …
Fast-charging, non-aqueous lithium-based batteries are desired for practical applications. In this regard, LiMn2O4 is considered an appealing positive …
Oxygen redox reactions in Li ion battery electrodes studied by …
Resonant inelastic X-ray scattering and X-ray absorption spectroscopy on the negative electrode material Li 0.5 Ni 0.25 TiOPO 4 in a Li-ion battery Phys. Chem. Chem. Phys., 13 ( 2011 ), pp. 6544 - 6551
Integrated Bifunctional Oxygen Electrodes for Flexible Zinc–Air Batteries: From Electrode …
1 Introduction Our daily life has witnessed the emerging flexible/wearable electronic devices that cover lots of consumer electronics, such as iwatch, smart glasses, monitoring bracelets, smart garments, roll-up displays or rollable TVs, and e-skins, etc. Flexible ...
Operando X-ray absorption spectroscopy investigations on NaxNi1/3Fe1/3Mn1/3O2 positive electrode materials for sodium and sodium ion batteries ...
The electrochemical measurements on the assembled sodium metal coin cells were conducted in the voltage range of 1.5–4.5 V, and the initial voltage profile and cycling performance at different current rates are compared in Fig. 2.The NaMn 1/3 Fe 1/3 Ni 1/3 O 2 and Na 2/3 Mn 1/3 Fe 1/3 Ni 1/3 O 2 display initial discharge capacities of 184 and …
Manipulating coordination environment for a high-voltage aqueous copper-chlorine battery …
Aqueous copper-based batteries suffer from low voltage due to the high copper negative electrode potential. Here, utilizing the coordination of chloride with copper ions, authors lower copper''s ...
Inorganics | Free Full-Text | Recent Progress on …
In this review, three main categories of catalyst for the positive electrode of Li-O 2 batteries, including carbon materials, noble metals and their oxides, and transition metals and their oxides, are …
Advances in Structure and Property Optimizations of Battery Electrode …
Different Types and Challenges of Electrode Materials According to the reaction mechanisms of electrode materials, the materials can be divided into three types: insertion-, conversion-, and alloying-type materials (Figure 1 B). 25 The voltages and capacities of representative LIB and SIB electrode materials are summarized in Figures 1 …
Operando X-ray Absorption Study of the Redox Processes …
Operando X-ray absorption spectroscopy investigations have been carried out to follow changes in the atomic and electronic local structures of all three transition metals for the Li1.20Mn0.54Co0.13Ni0.13O2 layered oxide during the first and second charges and discharges of lithium batteries. The experiments were performed using a …
Exploration of materials electrochemistry in rechargeable batteries using advanced in situ / operando x-ray absorption …
and Mn deposited on the negative electrodes of NMC batteries after dissolution []. ... [38] Roychoudhury Subhayan, Qiao R et al. 2020 Deciphering the oxygen absorption pre-edge: universal map of transition metal redox potentials in …
A near dimensionally invariable high-capacity positive electrode …
Delivering inherently stable lithium-ion batteries is a key challenge. Electrochemical lithium insertion and extraction often severely alters the electrode crystal chemistry, and this contributes ...
Multiorbital bond formation for stable oxygen-redox reaction in battery electrodes …
Multiorbital bond formation for stable oxygen-redox reaction in battery electrodes† Takaaki Sudayama a, Kazuki Uehara b, Takahiro Mukai c, Daisuke Asakura a, Xiang-Mei Shi b, Akihisa Tsuchimoto b, Benoit Mortemard de Boisse bd, Tatau Shimada b, Eriko Watanabe b, Yoshihisa Harada e, Masanobu Nakayama cdf, Masashi Okubo bd and …
