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408 results on '"Liang, Yeru"'

8. Porous Functionalized Covalent-Triazine Frameworks for Enhanced Adsorption Toward Polysulfides in Li-S Batteries and Organic Dyes

Author

Liu, Qianhui, Yang, Shuhao, Repich, Hlib, Zhai, Yixuan, Xu, Xiaosa, Liang, Yeru, Li, Hejun, Wang, Hongqiang, and Xu, Fei

Subjects
Chemical Sciences, Physical Chemistry, covalent triazine-based frameworks, pore structure, functionalization, lithium, sulfur batteries, organic dye adsorption, lithium- sulfur batteries, Chemical sciences
Abstract

The incorporation of functional building blocks to construct functionalized and highly porous covalent triazine frameworks (CTFs) is essential to the emerging adsorptive-involved field. Herein, a series of amide functionalized CTFs (CTF-PO71) have been synthesized using a bottom-up strategy in which pigment PO71 with an amide group is employed as a monomer under ionothermal conditions with ZnCl2 as the solvent and catalyst. The pore structure can be controlled by the amount of ZnCl2 to monomer ratio. Benefitting from the highly porous structure and amide functionalities, CTF-PO71, as a sulfur cathode host, simultaneously demonstrates physical confinement and chemical anchoring of sulfur species, thus leading to superior capacity, cycling stability, and rate capability in comparison to unfunctionalized CTF. Meanwhile, as an adsorbent of organic dye molecules, CTF-PO71 was demonstrated to exhibit strong chemical interactions with dye molecules, facilitating adsorption kinetics and thereby promoting the adsorption rate and capacity. Furthermore, the dynamic adsorption experiments of organic dyes from solutions showed selectivity/priority of CTF-PO71s for specific dye molecules.

Published
2020

13. Sustainable synthesis of metal compound/carbon composites via coordination chemistry for high-performance lithium-ion batteries.

Author

Zhang, Weicai, Lin, Xiaomin, Fang, Yawei, Yang, Chaowei, Zheng, Mingtao, and Liang, Yeru

Abstract

Metal compound/carbon (MC/C) composites are one of the key materials for advancing energy storage, catalysis, sensing and other technologies, yet their synthesis is hampered by complex and inefficient methods that compromise the carbon/non-carbon interface compatibility. This study introduces a strategy for synthesizing MC/C composites, leveraging coordination chemistry between chitosan and metal ions to enhance interfacial interactions and achieve uniform multi-phase interfaces. During the one-step heat treatment process of chitosan-based coordination polymers, metal compound nanoparticles can be formed in situ within a carbon matrix, thereby eliminating the need for environmentally harmful precursors and overcoming the issue of low reaction efficiency caused by traditional solid-state mixing techniques. The as-synthesized typical Ni3S2/C composite exhibits high reversible capacity (1434 mA h g−1, 250 cycles at 0.05 A g−1), and superior rate capability (capacity retention exceeds 41% with a 40-fold enhancement of current density) when used as the anode of lithium-ion batteries. This general and scalable synthesis strategy for MC/C composites opens new avenues for the development of high-performance anode materials for lithium-ion batteries, offering a pathway to green, sustainable and cost-effective energy storage solutions. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Enhanced Light‐Harvesting and Energy Transfer in Carbon Dots Embedded Thylakoids for Photonic Hybrid Capacitor Applications

Author

Li, Wei, primary, Wang, Yixin, additional, Wang, Bingzhe, additional, Lu, Kaixin, additional, Cai, Wenxiao, additional, Lin, Junjie, additional, Huang, Xiaoman, additional, Zhang, Haoran, additional, Zhang, Xuejie, additional, Liu, Yingliang, additional, Liang, Yeru, additional, Lei, Bingfu, additional, and Qu, Songnan, additional

Published
2023
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46. Enhanced Light‐Harvesting and Energy Transfer in Carbon Dots Embedded Thylakoids for Photonic Hybrid Capacitor Applications.

Author

Li, Wei, Wang, Yixin, Wang, Bingzhe, Lu, Kaixin, Cai, Wenxiao, Lin, Junjie, Huang, Xiaoman, Zhang, Haoran, Zhang, Xuejie, Liu, Yingliang, Liang, Yeru, Lei, Bingfu, and Qu, Songnan

Subjects
THYLAKOIDS, ENERGY transfer, FLUORESCENCE resonance energy transfer, ENERGY harvesting, PHOTOCATHODES, CAPACITORS, ENERGY storage
Abstract

Nanohybrid photosystems have advantages in converting solar energy into electricity, while natural photosystems based solar‐powered energy‐storage device is still under developed. Here, we fabricate a new kind of photo‐rechargeable zinc‐ion hybrid capacitor (ZHC) benefiting from light‐harvesting carbon dots (CDs) and natural thylakoids for realizing solar energy harvesting and storage simultaneously. Under solar light irradiation, the embedded CDs in thylakoids (CDs/Thy) can convert the less absorbed green light into highly absorbed red light for thylakoids, besides, Förster resonance energy transfer (FRET) between CDs and Thy also occurs, which facilitates the photoelectrons generation during thylakoids photosynthesis, thereby resulting in 6‐fold photocurrent output in CDs/Thy hybrid photosystem, compared to pristine thylakoids. Using CDs/Thy as the photocathode in ZHCs, the photonic hybrid capacitor shows photoelectric conversion and storage features. CDs can improve the photo‐charging voltage response of ZHCs to ≈1.2 V with a remarkable capacitance enhancement of 144 % under solar light. This study provides a promising strategy for designing plant‐based photonic and electric device for solar energy harvesting and storage. [ABSTRACT FROM AUTHOR]

Published
2024
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