Porous SnO2 nanoflakes with loose-packed structure: Morphology conserved transformation from SnS2 precursor and application in lithium ion batteries and gas sensors

Wang, Qihua; Wang, Dewei; Wu, Minghao; Liu, Baixing; Chen, Jiangtao; Wang, Tingmei; Chen, Jian

doi:10.1016/j.jpcs.2011.02.004

Cited by 27 publications

(6 citation statements)

References 37 publications

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“…As shown in Figures a and S3, the SnO 2 nanosheet consists of nanoparticle-shaped SnO 2 , and the 1T-MoS 2 was tightly coated on the surface of SnO 2 nanoparticles. The crystal structure of SnO 2 /TMS could be clearly verified in the high-resolution TEM picture of Figure b. − The energy-dispersive X-ray (EDX) analysis is shown in Figure c-g, and the results imply that the S, O, Mo, and Sn were dispersed uniformly in the SnO 2 /TMS sample, in agreement with the EDS mapping result (Figure S5). In addition, the N 2 isothermal adsorption and desorption measurement was carried out to investigate the specific surface area of SnO 2 /TMS.…”

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confidence: 76%

Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

et al. 2018

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The serious shuttle effect of soluble polysulfides inevitably leads to low sulfur utilization and faster capacity decay, thus preventing the development of Li–S batteries. Array electrodes have attracted much attention owing to their binder-free and freestanding features. However, the insufficient surface area, lack of active sites with polysulfides, and poor conductive nature of the array electrode could not satisfy the need for high-rate and long-life Li–S batteries, especially for the high sulfur loading of Li–S batteries. Thus, in this work, we constructed the hierarchical C@SnO2/1T-MoS2 (C@SnO2@TMS) array electrode as the sulfur host. The hierarchical C@SnO2@TMS demonstrated strong adsorption with polysulfides, which could effectively facilitate polysulfide redox kinetics. With the C@SnO2@TMS/S as the electrode, the batteries achieved superb C-rate properties, high specific capacity, and ultralong lifespan. Even undergoing 4000 cycles at 5 C, the battery could retain a high specific capacity of 448 mAh g–1 with the capacity decay as low as 0.009% per cycle.

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confidence: 76%

Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

et al. 2018

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“…The average pore diameter of the SnO 2 nanosheets is about 4–5 nm (as measured by application of the Barrett–Joyner–Halenda method) to the desorption data (Figure b), in excellent agreement with the TEM image in Figure a. The formation of the mesoporous structure could be due to the replacement of S 2− by smaller sized O 2− during calcination . Importantly, all active sites are readily accessible to the reactant on a short timescale owing to the high mesoporosity and ultrathin thickness (less than 10 nm).…”

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confidence: 98%

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity

et al. 2016

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Electrochemical reduction of CO into liquid fuels is a promising approach to achieve a carbon-neutral energy cycle. However, conventional electrocatalysts usually suffer from low energy efficiency and poor selectivity and stability. A 3D hierarchical structure composed of mesoporous SnO nanosheets on carbon cloth is proposed to efficiently and selectively electroreduce CO to formate in aqueous media. The electrode is fabricated by a facile combination of hydrothermal reaction and calcination. It exhibits an unprecedented partial current density of about 45 mA cm at a moderate overpotential (0.88 V) with high faradaic efficiency (87±2 %), which is even larger than most gas diffusion electrodes. Additionally, the electrode also demonstrates flexibility and long-term stability. The superior performance is attributed to the robust and highly porous hierarchical structure, which provides a large surface area and facilitates charge and mass transfer.

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“…The formation of the mesoporous structure could be due to the replacement of S 2À by smaller sized O 2À during calcination. [17] Importantly, all active sites are readily accessible to the reactant on a short timescale owing to the high mesoporosity and ultrathin thickness (less than 10 nm). Consequently, much enhanced electrocatalytic performance can be expected.…”

mentioning

confidence: 99%

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity

et al. 2016

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Porous SnO2 nanoflakes with loose-packed structure: Morphology conserved transformation from SnS2 precursor and application in lithium ion batteries and gas sensors

Cited by 27 publications

References 37 publications

Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity

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Porous SnO2 nanoflakes with loose-packed structure: Morphology conserved transformation from SnS2 precursor and application in lithium ion batteries and gas sensors

Cited by 27 publications

References 37 publications

Rational Design of Hierarchical SnO2/1T-MoS2 Nanoarray Electrode for Ultralong-Life Li–S Batteries

Rational Design of Hierarchical SnO2/1T-MoS2 Nanoarray Electrode for Ultralong-Life Li–S Batteries

Hierarchical Mesoporous SnO2 Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO2 Reduction with High Efficiency and Selectivity

Hierarchical Mesoporous SnO2 Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO2 Reduction with High Efficiency and Selectivity

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Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

Rational Design of Hierarchical SnO₂/1T-MoS₂ Nanoarray Electrode for Ultralong-Life Li–S Batteries

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity

Hierarchical Mesoporous SnO₂ Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO₂ Reduction with High Efficiency and Selectivity