Power industry is not only the economic development of the most important basic energy industry, but also the largest carbon emission sectors of the industry.As an energy consumption and pollution emissions province, Inner Mongolia power industry is the focus of energy saving industry, thus promoting the electric power industry to carry out carbon dioxide emissions, is an important positive practice of low-carbon development strategies in the proposed region.Based on the analysis of current situation in Inner Mongolia power industry carbon emissions, this paper analyzes the industrial structure and carbon emissions trading problems in the Inner Mongolia Electric Power Industry, and finds the path to energy conservation, so that internal and external power system may cut emissions proposals to make better and faster development of Inner Mongolia Electric Power on the road of green electricity.
nanoMn 3 O 4 was prepared by a simple solvothermal method. The structure, morphology and electrochemical properties of the products were investigated by XRD, SEM and constant current discharge-charge test. The results of XRD and SEM shows that nanoMn 3 O 4 is high-purity, and it’s diameter is about 30 nm. It could deliver an initial discharge capacity of 1324.4 mAh g -1 at the current density of 25.5 mA g -1 , and the specific discharge capacity is 586.9 mAh g -1 after 30 cycles at the current density of 30.4 mA g -1 .
Understanding the formation and location of catalytic intermediates is crucial for unraveling the mechanism of oxygen evolution reaction (OER), a key process in electrochemical water splitting. Despite the availability of various in-situ and ex-situ characterization methods, the formation and location of intermediates remain elusive, hindering the development of more efficient electrocatalysts. In this work, we discovered a stable static active oxygen species formed during the chemical oxidation of cobalt hydroxide flakes, providing a unique opportunity to probe the intermediates involved in OER. We are able to monitor the equilibrium conversion between stable peroxo structure and superoxo radical via EPR and Raman test, shedding light on the nature of the active oxygen species. In addition, CoOOH flakes with cracks were synthesized via controlled chemical oxidation, enabling the investigation of the role of crack/edge structures in the electrocatalytic activity. Statistical regression analysis combining morphological features, electrochemical performance, and Raman spectroscopy confirmed a strong correlation between morphology evolution, OER activity, and active oxygen species, highlighting the importance of controlling the morphology of electrocatalysts for enhancing their performance. Therefore, we propose that the source of active oxygen intermediates can be attributed to the presence of crack/edge structures. The crack-rich CoOOH exhibit significantly higher current density at a lower overpotential, providing a new direction for the design of efficient water oxidation electrocatalysts. Overall, this work offers important insights into the mechanism of OER and provides a basis for the development of more efficient and sustainable electrocatalysts for energy conversion and storage.
Development of a p–n heterojunction to achieve efficient degradation of organic pollutants is a promising approach in the field of photocatalysis. Herein, BiVO4 with bioinspired hierarchical structures was prepared with the sol–gel method and combined with BiOCl nanoplates to construct a 3D/2D configuration via an in situ deposition route. The hierarchical BiVO4 served as an excellent substrate to achieve the uniform loading of BiOCl nanoplates. The obtained 3D/2D BiVO4/BiOCl hybrids exhibited significantly enhanced photocatalytic efficiency for degrading phenol under visible light irradiation, with a first-order reaction rate constant that was 9.9 and 1.9 times higher than those of hierarchical BiVO4 and the BiVO4/BiOCl hybrids without hierarchical structures, respectively. Moreover, the hierarchical BiVO4/BiOCl also displayed good photochemical stability for the degradation of phenol after three recycles. The p–n heterojunction and hierarchical structure worked together to form a spatial conductive network framework, which possessed improved visible light absorption, high specific surface area, as well as effective separation and transfer of photogenerated charge carriers.
Here, we report the fabrication of TiO2/Fe2O3 core/shell heterojunction nanorod arrays by a pulsed laser deposition (PLD) process and their further use as photoelectrodes toward high-performance visible light photoelectrochemical (PEC) water splitting. The morphology, phase, and carrier conduction mechanism of plain TiO2 and TiO2/Fe2O3 core/shell nanostructure were systematically investigated. PEC measurements show that the TiO2/Fe2O3 core/shell nanostructure enhances photocurrent density by nearly 2 times than the plain ones, increases visible light absorption from 400 to 550 nm, raises the on/off separation rate, and delivers high stability with only a 3% decrease of current density for tests of even more than 14 days. This work provides a method to design an efficient nanostructure by combination of a facile hydrothermal process and high-quality PLD process to fabricate a clean surface and excellent crystallinity for charge separation, transfer, and collection toward enhanced PEC properties.
The review highlights the recent advances and challenges in photo-assisted electrocatalysis, including photo-generated carrier-assisted, LSPR-assisted, and photothermally-assisted ones.
Durable and efficient anion exchange polyelectrolytes (AEPs) are crucial for the long-term operation of cost-effective anion exchange membrane fuel cells (AEMFCs) and water electrolyzers (AEMWEs). Here, we present a new class of γ-amine-piperidinium-functionalized polystyrene AEPs (P-AP-Ca), featuring a carbazole segment to tune ion exchange capacities (IECs). The P-AP-Ca AEPs possess high OH– conductivity and outstanding alkaline stability in 1 M NaOD/CD3OD/D2O at 80 °C for 6,000 h, making them among the most stable AEPs reported to date. P-AP-Ca-based AEMFCs with a Co–Mn cathode achieve a highest peak power density of 1.38 W cm–2 at 80 °C. Moreover, P-AP-Ca-based AEMWEs with a NiFeOOH anode deliver a high current density of 6.3 A cm–2 at 2 V, and the cell can be run stably at 2 or 3 A cm–2 over 1,100 h in 1 M KOH. These results demonstrate the remarkable robustness and effectiveness of these new AEPs for next-generation alkaline energy devices.
Abstract Continuous fast pyrolysis is developed for in situ synthesis of ultra‐small metal oxide nanoparticles embedded into three‐dimensional macroporous carbon matrix as demonstrated by the TiO 2 /carbon nanohybrid. The TiO 2 nanoparticles with the average size of 4.6 nm ± 0.6 nm are uniformly distributed in the in situ generated macroporous carbon matrix. When evaluated as an anode in a lithium‐ion battery, the macroporous TiO 2 /C nanohybrid exhibits a reversible capacity of 483 mAh g –1 after 500 cycles at a current density of 67 mA g –1 , which is 3.6 times higher than that of the TiO 2 /C calcined in a conventional batchwise way. Besides, the capacity retains 93 mAh g –1 at a high current density of 670 mA g –1 . It reveals that the continuous fast pyrolysis is an efficient method to fabricate carbon composition based metal oxides as lithium‐ion battery anode materials.
In this investigation, the natural 2D photonic crystals (PhCs) within peacock feathers are applied to incorporate CdS nanocrystallites. Peacock feathers are activated by ethylenediaminetetraacetic/dimethylformamide suspension to increase the reactive sites on the keratin component, on which CdS nanoparticles (nano-CdS) are in situ formed in succession and serve as the "seeds" to direct further incorporation during the following solvothermal procedure. Thus, homogeneous nano-CdS are loaded both on the feathers' surface layer and inside the 2D PhCs. The obtained nano-CdS/peacock feathers hybrids are novel photonic crystals whose photonic stop bands are markedly different from that of the natural PhCs within original peacock feathers, as observed by the reflection spectra.
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