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Al-Hajji L A, et al. Ceramics International, 2024, 50(14), 25494-25502.
A photocatalyst with high visible light capture efficiency was successfully designed and prepared by anchoring lithium manganate nanoparticles (Li2MnO3 NPs) on a mesoporous ceria (CeO2) network. The obtained Li2MnO3/CeO2 nanocomposite can be used for photoreduction of Hg(II) ions under visible light irradiation and exhibits high stability and high efficiency.
Key properties of Li2MnO3/CeO2 nanocomposite
· The presence of Li2MnO3 and CeO2 in the nanocomposites, exhibiting monoclinic and cubic fluorite structures with particle sizes ranging from 10 to 20 nm.
· Compared to pristine CeO2 nanoparticles, the incorporation of Li2MnO3 and CeO2 NPs resulted in remarkable enhancement of photocatalytic activity. The optimal 9% Li2MnO3/CeO2 composite exhibited a remarkable 98% reduction ability for Hg(II) within 60 minutes. The rate constant of the 9% Li2MnO3/CeO2 photocatalyst was approximately 6.47 and 3.85 times higher than that of Li2MnO3 and CeO2 NPs, respectively.
· This superior performance can be attributed to the efficient separation of photocarriers facilitated by the S-scheme heterojunction, large surface area, and mesoporous structures of the Li2MnO3/CeO2 nanocomposites.
· Furthermore, the stability and efficiency of the Li2MnO3/CeO2 nanocomposites were demonstrated by consistent Hg(II) photoreduction performance over five successive experiments under similar conditions.
Jiang C, et al. Journal of Power Sources, 2019, 413, 441-448.
Layered spinel lithium manganate hydrate (LHMO-LS) was successfully synthesized via a one-step hydrothermal lithiation process, which has a hierarchical structure consisting of two-dimensional nanosheets. Subsequently, the electrochemical performance of LHMO-LS as a cathode material for lithium-ion batteries was studied. The results show that the LHMO-LS material combines diffusion-controlled and pseudocapacitive charge storage mechanisms, with high capacity output and high rate capability.
Synthesis procedure of LHMO-LS material
· The synthesis of lithium manganite hydrates with layered-spinel phases (referred to as LHMO-LS) was carried out using a straightforward hydrothermal method. Initially, 5 mmol of birnessite-type manganese oxides were combined with 60 mL of 0.06 M LiOH aqueous solution, and then transferred into a 100 mL Teflon-lined stainless steel autoclave.
· Subsequently, the hydrothermal reaction took place for 48 hours at 160°C in an oven. Finally, the resulting precipitate was filtered under vacuum, washed, and dried at 70°C for 10 hours.
· Additionally, by adjusting the concentration of the LiOH solution, control samples of lithium manganese oxide with a single hydrated layered phase (referred to as LHMO-L) containing 0.04 M LiOH and lithium manganese oxide with a single unhydrous spinel phase (LMO-S) containing 0.16 M LiOH were easily prepared.
Lin, Chengtao, Can Cui, and Xiaotian Xu. 2013 World Electric Vehicle Symposium and Exhibition (EVS27). IEEE, 2013.
As a key issue in the development of electric vehicles, the thermal safety of lithium-ion batteries is mainly focused on, among which the THERMAL ABUSE model is an important tool. A 3D electrothermal model was established to consider the side reactions in order to study the safety issues of MGL100Ah lithium manganite batteries. The heat generation mechanism of lithium manganate batteries, the types of thermal models and the mesh model are explained, and then the model is simulated and analyzed under short-circuit conditions, among which the THERMAL abuse conditions. On the one hand, the responsibility of the model is verified, so that the model can be applied to other thermal abuse conditions in the future; on the other hand, the temperature distribution, voltage and current changes under internal short-circuit conditions are discussed in detail.
The current collector is made of homogeneous and isotropic metal, the positive electrode is aluminum, and the negative electrode is copper. The positive electrode material is lithium manganite and the negative electrode material is graphite. According to previous studies, the diaphragm is filled with electrolyte, in which the diaphragm material is PE/PP/PE, the electrolyte is LiPF6, and the organic solvent is DEC+DMC+EC; the positive electrode mainly contains positive active material, binder and electrolyte, and the negative electrode contains negative active material, binder and electrolyte. Through comprehensive calculation and experiment, the thermophysical parameters of the above three parts are obtained. Next, all these parts together are called a unit. In addition, both current collectors have a positive and a negative tab extending out, which are connected to the external circuit.
Ye, Minghui, et al. Nano Energy 49 (2018): 403-410.
A smart lithium manganite/graphene oxide/lithium (LMO/GO/Li) battery is proposed, using a rationally designed three-layer membrane as a separator, in which the GO membrane is sandwiched between two commercial polymer microporous membranes. This unique LMO/GO/Li battery has the advantages of puncture resistance and elimination of lithium dendrites. Once punctured, the middle GO layer can chemically etch the metallic lithium according to the spontaneous redox reaction, so the LMO/GO/Li battery can work normally without short circuit. At the same time, GO can effectively eliminate lithium dendrites and avoid internal short circuits. As a result, the LMO/GO/Li battery can be reversibly charged/discharged 6,000 times, i.e., about 48 times longer than conventional LMO/Li batteries, and still maintain a high coulombic efficiency of 93%. This work not only conceptually provides new opportunities for the development of other puncture-resistant batteries, but also paves the way for the construction of dendrite-free LMBs.
The lithium manganite/aluminum (LMO/Al) cathode was prepared by applying a slurry of mixed micro-sized LMO, polyvinylidene fluoride (PVDF) binder, and acetylene black (weight ratio of 8:1:1) on a piece of aluminum foil. Afterwards, the formed electrode was vacuum dried at 120°C for 12 hours. The typical loading mass of active materials was about 1.5 mg cm^2. The thickness of the entire LMO/Al cathode and a single LMO layer were about 35 μm and 12 μm, respectively.
The molecular formula of lithium manganite is Li2MnO3.
Some synonyms for lithium manganite are lithium manganate(IV) and lithium dioxido(oxo)manganese.
The molecular weight of lithium manganite is 116.9 g/mol.
The IUPAC name of lithium manganite is dilithium;dioxido(oxo)manganese.
The InChI of lithium manganite is InChI=1S/2Li.Mn.3O/q2*+1;;;2*-1.
The InChIKey of lithium manganite is MYKKJHPKWUYDHJ-UHFFFAOYSA-N.
The canonical SMILES of lithium manganite is [Li+].[Li+].[O-][Mn](=O)[O-].
Lithium manganite has 3 hydrogen bond acceptor counts.
The topological polar surface area of lithium manganite is 63.2Ų.
Yes, lithium manganite is a canonicalized compound.
| [Other Products] Fluorphlogopite(Mg3K[AlF2O(SiO3)3]) Catalog: ACM12003382 CAS: 12003-38-2 |
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