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18 results on '"Hu, Yuexiao"'

12. Achieving Material and Energy Dual Circulations of Spent Lithium‐Ion Batteries via Triboelectric Nanogenerator.

Author

Zhang, Baofeng, He, Lixia, Zhang, Ruolin, Yuan, Wei, Wang, Jing, Hu, Yuexiao, Zhao, Zhihao, Zhou, Linglin, Wang, Jie, and Wang, Zhong Lin

Subjects
LITHIUM-ion batteries, WIND power, ENERGY consumption, ELECTRICITY, CATHODES, ELECTRIFICATION
Abstract

The electrification of transportation in the past few decades has sparked the retirement of lithium‐ion batteries (LIBs) which hinders sustainability derived from environmental impact and valuable elements loss through improper disposal. The challenges of recycling spent LIB are contamination, complicated processes, massive chemical/energy consumption, and secondary pollution. Here, a material and energy dual circulations method is proposed for a closed‐loop and sustainably recycling the components in spent LIBs. In the material circulation, the cathode, anode, and the accessories, like castings, aluminum‐plastic films, and binders, are recycled by electrochemical dual‐electrode recycling technology to regenerate LIBs and fabricate a triboelectric nanogenerator (TENG). In energy circulation, the fabricated TENG converts ambient wind energy into electricity to continuously power the material circulation by forming a self‐powered system. This system shows high element selectivity (Li, 99.7%; Ni, 96.1%; Co, 97.3%; and Mn, 97.2%), self‐powering, a simplified treating procedure, and high profit, which makes it feasible for commercial application. [ABSTRACT FROM AUTHOR]

Published
2023
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18. Superior Charge Density of Triboelectric Nanogenerator via Trap Engineering.

Author

Liu, Xiaoru, Zhao, Zhihao, Zhang, Baofeng, Hu, Yuexiao, Qiao, Wenyan, Gao, Yikui, Wang, Jing, Guo, Ziting, Zhou, Linglin, Wang, Zhong Lin, and Wang, Jie

Subjects
*MECHANICAL energy, *ELECTRICAL energy, *ENERGY density, *BARIUM titanate, *DIELECTRIC loss
Abstract

Triboelectric nanogenerator (TENG) offers a novel approach for converting high‐entropy mechanical energy into electrical energy, yet achieving high charge density remains critical. Optimizations using dielectrics with high specific capacitance have mitigated air breakdown, but charge loss within dielectrics persists as a limiting factor. Here, based on poly(vinylidene fluoride–trifluoroethylene–chlorofluoroethylene) (P(VDF‐TrFE‐CFE)) with high specific capacitance, (P(VDF‐TrFE‐CFE)) composites’ trap density and energy are engineered using high‐polarity interfaces from barium titanate (BTO) nanoparticles and dense chain segment stacking induced by electrostatic interaction with polyetherimide (PEI) to enhance charge retention capability. With modified high interfacial traps, an ultrahigh charge density of 9.23 mC m−2 is achieved in external charge excitation (ECE) TENG using 0.2 vol% PEI/P(VDF‐TrFE‐CFE) film, marking the highest charge density reported for single‐unit TENGs. This work provides novel material strategies for high‐performance TENGs, paving the way for their large‐scale practical applications. [ABSTRACT FROM AUTHOR]

Published
2024
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