CuO nanoflowers/copper fiber felt integrated porous electrode for lithium-ion batteries

Yuan, Wei; Ye, Yintong; Yang, Yang; Zhang, Xiaoqing; Pan, Baoyou; Peng, Ziming; Wu, Mulun; Qiu, Zhiqiang; Wang, Chun; Yuan, Yuhang; Yan, Zhiguo; Tang, Yong

doi:10.1007/s11431-020-1608-x

Cited by 5 publications

(2 citation statements)

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“…In recent years, researchers have exploited the rich interfaces and defects formed by metal oxide composites with LTO to enhance the reversible capacity and diffusion kinetics of LTO. − For instance, TiO 2 can provide additional capacity and increase the conductivity and rate performance of LTO. − NiO can not only provide additional capacity but also improve the charge/discharge plateau and electrochemical reaction rate of LTO . Among these metal oxides, CuO is considered a very promising material due to its good electrical conductivity, mechanical toughness, and high chemical stability. , The amorphous CuO in the nickel/amorphous CuO core–shell structure prepared by Liu et al is able to significantly enhance the reversible capacity and electrochemical stability of the composite. Xu and co-workers successfully prepare Co 3 O 4 /CuO nanocomposites using a dealloying method, and the synergistic effect of the two structures results in excellent Coulomb efficiency and multiplicative properties of Co 3 O 4 /CuO.…”

Section: Introductionmentioning

confidence: 99%

“…17 Among these metal oxides, CuO is considered a very promising material due to its good electrical conductivity, mechanical toughness, and high chemical stability. 18,19 The amorphous CuO in the nickel/amorphous CuO core−shell structure prepared by Liu et al 20 is able to significantly enhance the reversible capacity and electrochemical stability of the composite. Xu and co-workers 21 successfully prepare Co 3 O 4 /CuO nanocomposites using a dealloying method, and the synergistic effect of the two structures results in excellent Coulomb efficiency and multiplicative properties of Co 3 O 4 /CuO.…”

Section: Introductionmentioning

confidence: 99%

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Rapid Construction of LTO/CuO Heterojunctions by Active Screen Plasma for Excellent Lithium-Ion Storage

Sun

Qin

et al. 2022

ACS Appl. Energy Mater.

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The lower intrinsic capacity and electron/ion transfer rate of Li 4 Ti 5 O 12 limit its application and commercialization in high-specific-energy batteries. In this work, Li 4 Ti 5 O 12 /CuO heterojunctions are constructed by depositing CuO ultrafine nanoparticles on Li 4 Ti 5 O 12 nanosheets using a controllable and high-efficiency active screen plasma (ASP) technique. It is found that the rich interface and built-in electric field provided by the heterojunction enhance the electron conductivity and ionic conductivity, and density functional theory calculations confirm that the heterojunction reduces the band gap and enhances the adsorption energy for lithium ions; in the lithium storage process, the conversion reaction between CuO and lithium ions not only provides additional capacity but also the product Cu facilitates electron transport and accelerates the electrochemical process. In addition, the increase in vacancies and specific surface area due to high-energy particle bombardment contributes to the increase in conductivity and the number of active sites, and the treated sample exhibits excellent reversible capacity (182.6 mAh•g −1 at 1C), high rate performance (170.6 mAh•g −1 at 30C), and long cycle stability (136.7 mAh•g −1 after 4500 cycles at 20C) in the half-cell, and the full cell assembled with NMC811 maintained 227.4 mAh•g −1 after 700 cycles at 1C.

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