This method enhanced the Li+ ions' ability to form a layer between the metal oxide layers and improved the performance of the lithium-ion battery. The SEM image showed that the NMA particles were well formed and did not show much agglomeration. NMA 973 had the best high-rate performance ...
Raman and FTIR spectroscopy methods also recognized the iron-associated presence of the organic component in the samples in the form of compounds with an aliphatic part (based on the significant contribution from methyl and methylene groups); compounds with double bonds, including benzene rings (...
One of the most promising storage technologies is the metal hydride form. Metal hydrides offer an appealing combi- nation of high energy densities, safety, and numerous potential uses on both a small and large scale as well as the short and long term [14–19]. AB5 compounds stand out ...
(wt.%) Cu Mg 4.31 0.34 4.03 0.33 3.77 0.36 Mn – 0.36 0.41 The contribution of grain-boundary strengthening is usually calculated using the following Hall-Petch equation [43]: σGB = kGBd−GB21 (3) where kGB is the Hall-Petch coefficient, ~0.15 MPa/m1/2 [44], and dGB is the ...
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XPS results of three doped elements (Co, Cr and Al) in these two samples are very close (Figure 6d–e), which proves that the valence state and existing form of these three dopants are very stable in the synthesis process, and have good compatibility with the spinel structure LiNi0.5Mn...
Neighbouring Mn(II) centres are connected by two different syn-anti bridg- ing carboxylate groups to form regular coordination chains. There are two different [Mn2(RCOO)2] units along the chain, formed by two crystallographically independent Mn centres (Mn1 and Mn2). These chains are further ...
9T2h9e.2thermal energy52ra.1ises the temper4a8tu.4re of the deform1a0ti0on zone, resultin77g5in local softeni9n8g2.o1f the material a5n2.d3 an adiabatic te5m1.p4erature rise [391]0. 00 817 1047.4 60.6 63.5 Figure 5. 2288MMnn−-10Al cold-−rroollleeddaannnneeaalleeddt...
As shown in Figure 1, researchers have established single-phase solid solution and multi-phase composite models, respectively, for the existence of LiMO2 and Li2MnO3 phases in the form of layered single-phase solid solution [76–79] or multi-phase composite [61,80]. The main dispute ...