Publications by authors named "Chen Xingbao"
Structural Modulation of Nanographenes Enabled by Defects, Size and Doping for Oxygen Reduction Reaction.
Angew Chem Int Ed Engl
November 2024
Article Synopsis
- Nanographenes are emerging as promising alternatives to precious metals for the oxygen reduction reaction (ORR) due to their low cost, eco-friendliness, and excellent conductivity.
- *The enhanced performance of nanographenes in ORR is linked to factors like heteroatom doping, size, and defects, which help optimize charge distribution and improve electron transfer.
- *The review discusses the basic properties of nanographenes in ORR, their performance-enhancing factors, and addresses the challenges and future perspectives of using them as advanced electrocatalysts.
Article Synopsis
- The increase in smart electronic devices has led to significant electronic waste issues, prompting a search for recyclable materials to combat environmental damage.
- This study introduces a new type of polyurethane (SPPUs) that is ultra-strong, tough, and can be fully recycled at room temperature using green solvents like ethanol.
- The research also demonstrates the creation of printable capacitive sensors (PCBS) by combining SPPUs with nickel to enhance flexibility and conductivity, which can be easily recycled, providing a sustainable approach to managing e-waste in flexible electronics.
Potassium ion batteries (PIBs) are a viable alternative to lithium-ion batteries for energy storage. Red phosphorus (RP) has attracted a great deal of interest as an anode for PIBs owing to its cheapness, ideal electrode potential, and high theoretical specific capacity. However, the direct preparation of phosphorus-carbon composites usually results in exposure of the RP to the exterior of the carbon layer, which can lead to the deactivation of the active material and the production of "dead phosphorus".
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- - Sodium-ion batteries (SIBs) are being explored for large-scale energy storage due to the low cost and abundance of sodium, but improving their energy density and cycling stability is still a challenge.
- - Researchers synthesized F-doped NaAlV(PO)(NAVP) microspheres and found that the doping enhances sodium diffusion channels, resulting in an impressive capacity of 148 mAh/g at 100 mA/g and 90.8% retention after 200 cycles.
- - The F-doping process improves structural stability and rate performance, with NAVPF showing a discharge capacity of 83.6 mAh/g at a high current rate of 5000 mA/g, making it a promising candidate for future
Electrochemical conversion of CO to formic acid using Bismuth catalysts is one the most promising pathways for industrialization. However, it is still difficult to achieve high formic acid production at wide voltage intervals and industrial current densities because the Bi catalysts are often poisoned by oxygenated species. Herein, we report a BiS nanowire-ascorbic acid hybrid catalyst that simultaneously improves formic acid selectivity, activity, and stability at high applied voltages.
View Article and Find Full Text PDFManganese hexacyanoferrate (MnHCF) is one of the most promising cathode materials for aqueous battery because of its non-toxicity, high energy density, and low cost. But the phase transition from MnHCF to Zinc hexacyanoferrate (ZnHCF) and the larger Stokes radius of Zn cause rapid capacity decay and poor rate performance in aqueous Zn battery. Hence, to overcome this challenge, a solvation structure of propylene carbonate (PC)-trifluoromethanesulfonate (Otf)-HO is designed and constructed.
View Article and Find Full Text PDFCoordinating the Edge Defects of Bismuth with Sulfur for Enhanced CO Electroreduction to Formate.
Angew Chem Int Ed Engl
June 2023
Article Synopsis
- - Bismuth-based materials are emerging as effective catalysts for the electrocatalytic CO reduction reaction (ECO RR), but they struggle with selectivity due to competing hydrogen evolution reactions (HER).
- - This study introduces a strategy to enhance selectivity by coordinating edge defects of bismuth with sulfur, resulting in a high HCOO Faraday efficiency of about 95% and significant current under alkaline conditions.
- - Computational studies indicate that sulfur modifies the Bi edge defects, reducing the availability of certain adsorption sites and enhancing the adsorption of target products, which improves our understanding and design of ECO RR catalysts.
Article Synopsis
- * During the research period, 125 out of 500 recorded diarrhea cases were due to rotavirus, leading to a significant hospitalization rate and an estimated annual incidence of 61.4 cases per 1000 children.
- * Implementing a universal rotavirus vaccination could prevent a substantial number of diarrhea cases and hospitalizations, resulting in significant healthcare savings and highlighting the economic viability of such a program in the region.
Previous studies have shown that cost of illness (COI) measures are lower than the conceptually correct willingness-to-pay (WTP) measure of the economic benefits of disease prevention. We compare COI with stated preference estimates of WTP associated with shigellosis in a rural area of China. COI data were collected through face-to-face interviews at 7 and 14 days after culture-confirmed diagnosis.
View Article and Find Full Text PDF[Survey and treatment of pulmonary acariasis among the workers involving in traditional Chinese medicinal materials].
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi
April 2005
Objective: To investigate the prevalence of pulmonary acariasis among the employees working on traditional Chinese medicinal materials and observe the effect of treatment.
Methods: History inquiry, detection of mites in sputum, blood examination for eosinophils and specific antibodies, x-ray chest film were carried out for 327 workers involving in traditional Chinese medicinal materials. Mites were found in sputum in 121 persons who were then treated with metronidazole, twice a day with a daily dosage of 0.