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Sodium-ion batteries (SIBs) with huge cost advantages will show extraordinary talents in low-speed electric vehicles, energy storage, and base station communications. Manganese oxides are promising candidates for cathode materials, rapid capacity decay, and poor electrochemical performance that limit its commercial applications. Here, the nanosheets with exposed active crystal planes are prepared through a simple NH3∙H2O-assisted sol-gel process and subsequent high-temperature calcination. The unique structure considerably reduces the Na+ diffusion path for the excellent Na+ diffusion kinetics. The final results confirm that the NMO-pH6 sample, exposed to the active planes, has high energy density (557.9 Wh kg−1 at 0.1 C) and outstanding electrochemical performance, especially the rate performance (93.8 mAh g−1 at 5 C and 79.95 %, 100 cycles at 1 C). More importantly, it will facilitate the further construction of advanced cathode materials for high-performance SIBs.

Bauxite reaction residue (BRR) produced from the poly-aluminum chloride (PAC) coagulant industry is a solid acidic waste that is harmful to environment. A low temperature synthesis route to convert the waste into water glass was reported. Silica dissolution process was systematically studied, including the thermodynamic analysis and the influence of calcium and aluminum on the leaching of amorphous silica. Simulation studies have shown that calcium and aluminum combine with silicon to form hydrated calcium silicate, silica–alumina gel, and zeolite, respectively, thereby hindering the leaching of silica. Maximizing the removal of calcium, aluminum, and chlorine can effectively improve the leaching of silicon in the subsequent process, and corresponding element removal rates are 42.81%, 44.15%, and 96.94%, respectively. The removed material is not randomly discarded and is reused to prepare PAC. The silica extraction rate reached 81.45% under optimal conditions (NaOH; 3 mol L−1, L S−1; 5/1, 75°C, 2 h), and sodium silicate modulus (nSiO2:nNa2O) is 1.11. The results indicated that a large amount of silica was existed in amorphous form. Precipitated silica was obtained by acidifying sodium silicate solution at optimal pH 7.0. Moreover, sodium silicate (1.11) further synthesizes sodium silicate (modulus 3.27) by adding precipitated silica at 75°C.

Li-rich cathode materials have higher discharge capacity and lower cost than conventional electrode materials such as LiCoO2. However, they suffer from rapid capacity fading caused by irreversible phase transition and interfacial instability during the electrochemical cycling. La–Co–O (denoted as LC) compound possess good electronic conductivity and superior thermal stability, which could be used as a promising coating layer to suppress Mn dissolution as well as to facilitate electrical transfer. Furthermore, La–Co–O (LC) coating layer could decrease the Mn3+ ions on the surface of Li1.2Mn0.54Ni0.13Co0.13O2 (denoted as LMNC), thus stabilize the surface structure. Herein, we present La–Co–O (LC) coating layer on the surface of LMNC via an artful sol-gel-based method with a thickness below 50 nm. XPS, EDS and TEM tests were applied to confirm the existence of LC coating layer. 2 mol% LC coated LMNC sample shows much improved cycle stability at 1C (206.3 mAh g−1, 86.2% capacity retention after 100 cycles) and good rate capability especially at high rates. In addition, LC coating could effectively suppress voltage fading of LMNC. EIS results reveal that the LC modified LMNC materials exhibit better electrochemical kinetics than the pristine one.

Parkinson’s disease is a common neurodegenerative disease with a complex physio-pathology. So far, there is no effective medical strategies to prevent the progression of Parkinson’s disease. Understanding the mechanisms underlying the progression of Parkinson’s disease could provide insights into the formulation of novel preventative or treatment strategies. Small nucleolar RNA host gene 10 (SNHG10) is a lncRNA which has been implicated in the development of many cancers. However, its potential role in Parkinson’s disease remains unknown. In this study, we found that SNHG10 was upregulated while miR-1277-5p was downregulated in the Parkinson’s disease cell model of 1-Methyl-4-phenyl-pyridine ion (MPP+) induced SH-SY5Y cells. We further revealed that SNHG10 sponged miR-1277-5p to negatively regulate its expression, and miR-1277-5p could bind to the 3′UTR of insulin substrate receptor 2 (IRS2) mRNA to suppress its expression. These data suggest that SNHG10 regulates IRS2 through interacting with miR-1277-5p in the cell model of Parkinson’s disease. Through a series of molecular experiments and functional assays, we demonstrated that downregulating SNHG10 in the cell model of Parkinson’s disease attenuated the cell injury by reducing the expression of IRS2. Meanwhile, inhibiting miR-1277-5p or overexpressing IRS2 could partially reverse the effect of SNHG10 knockdown. In summary, our data indicate that knockdown of SNHG10 mitigates MPP+ induced damage in SH-SY5Y cells via the miR-1277-5p/IRS2 axis.

Li-rich Mn-based-layered oxides are considered to be the most felicitous cathode material candidates for commercial application of lithium-ion batteries on account of high energy density. Nevertheless, defects containing an unsatisfactory initial Coulombic efficiency and rapid voltage decay seriously impede their practical utilization. Herein, a coating layer with three distinct crystalline states are employed as a coating layer to modify Li[Li0.2Mn0.54Ni0.13Co0.13]O2, respectively, and the effects of coating layers with distinct crystalline states on the crystal structure, diffusion kinetics, and cell performance of host materials are further explored. A coating layer with high crystallinity enables mitigatory voltage decay and better cyclic stability of materials, while a coating layer with planar defects facilitates Li+ transfer and enhances the rate performance of materials. Consequently, optimizing the crystalline state of coating substances is critical for preferable surface modification.

A novel method for synthesizing poly-silicate aluminum sulfate coagulant (PSAS) using a silica-alumina sol was reported. Herein, two modalities (nSiO2/nNa2O: 1.11 and 3.27) of self-made water glasses were used as the silica source for synthesizing the sol precursor. Then, the PSAS1.11 and PSAS3.27 with different basicity were obtained by controlling the Al molar ratio of precursor to aluminum sulfate. The results showed that the PSAS1.11 coagulant prepared with low modulus water glass (LMWS, 1.11) has low turbidity and good stability. Using low modulus water glass, the effect of the Al molar ratio of precursor to aluminum sulfate on the basicity and stability of PSAS1.11 with Al/Si of 20 and the effect of the molar ratio of aluminum to silicon on the basicity and stability of PSAS1.11 were studied, respectively. Based on XRD and Fourier infrared (FTIR) characterization of the sol precursor and PSAS1.11, the synthesis mechanism of PSAS by the silica-alumina sol method was discussed. Al species distribution of PSAS1.11 was determined using the Al-Ferron timed spectrophotometric method. Moreover, the performance of PSAS1.11 coagulant was examined, regarding its efficiency towards color removal of Congo red. The results showed that PSAS1.11 coagulant with Al/Si of 20 and Al molar ratio of 1/12 exhibits excellent performance, and the color removal rate reached 98.6% at an initial pH of 11 and coagulant dosage of 40 mg L−1 (Al mg L−1). Finally, the PSAS coagulant mechanism was discussed in detail through infrared characterization, 27Al NMR, Raman, morphology and mapping of the flocs.

In view of the present intelligent and practicability of the small soccer robot system is still at the lower level, to improve and optimize the small soccer robot system performance, from the visual model to optimize the design of the decision system physical error control three perspective, based on the visual subsystem, decision-making subsystem and physical subsystems through the research of the three subsystems respectively through the model establishment and design improvement strategy is put forward, and USES the SOM simulation software to verify the simulation experiment and data results show that based on visual decision-making and physical three subsystems of the modified method is helpful to improve the overall performance of soccer robot system and intelligent level.

The arsenic and zinc could be leached from cobalt/nickel residue containing arsenic in an alkali medium with air as an oxidant under normal pressure conditions. The leachate contained arsenic and zinc. The arsenic should be reduced for removing cobalt from the zinc sulfate. The results showed that the optimal conditions were listed as follows: temperature of 60 °C, reaction time of 2.5 h, mass ratio of reducing agent to arsenic of 6, the stirring speed of 200 r/min. Under these optimal conditions, the removal ratio of cobalt was over 97%, much more than that without reduction. Then the solution contained less than 0.8 mg/L of cobalt, meeting the standard of zinc industrial production. Arsenic of the leaching solution was effectively recycled for the technology of the arsenic-salt-removal-cobalt-process, reducing the toxic effect of arsenic. It reduced the capital investment of cobalt removal. The method of arsenic recycle effectively decreased the loss of the main metal zinc during the process.

During hydrochloric acid leaching of bauxite reaction residue (BRR) produced from coagulant industry, the effects of hydrochloric acid concentration, liquid solid ratio and silica remove on the extraction of aluminum were studied, at atmospheric pressure (85 °C). The aluminum dissolution rate under the optimal conditions (8 mol L−1, L S−1 5:1) was only 44.15 %. After the leached residue was treated by alkali to selectively remove silica and then leached with hydrochloric acid at the same conditions, the aluminum extraction rate rarely changes, even if the silica removal rate reaches 81.52 %. Direct leaching after mechanical activation for 10 h, resulted in the extraction rate increased by 5.05 %. However, compared with the optimal condition (8 mol L−1, 5:1, 10 h) under atmospheric pressure, the aluminum extraction rate was only 49.2 %, while up to 84.23 % of aluminum was extracted from BRR at high-pressure (210 °C). In addition, the leaching experiment and kinetics of aluminum were analyzed in-depth under high-pressure. The apparent activation energy of aluminum dissolution was found to be 20.82 kJ mol−1, and the dissolution process is determined by liquid diffusion. Obtained leachate has been well recycled without waste discharged, which provides a theoretical basis for the BRR utilization.