Ascorbic acid-assisted synthesis of cobalt ferrite (CoFe2O4) hierarchical flower-like microspheres with enhanced lithium storage properties

Xiong, Qinqin; Tu, Jiangping; Shi, San-Qiang; Liu, X.Y.; Wang, X.L.; Gu, C.D.

doi:10.1016/j.jpowsour.2014.01.038

Cited by 93 publications

(39 citation statements)

References 54 publications

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“…The first anodic scan exhibits three peaks at 1.3, 2.1 and 2.4 V, corresponding to the oxidation of the above products [7]. In the subsequent scans, the cathodic and anodic peaks shift toward the positive voltages, which might be caused by the irreversible structural changes triggered by the repeated reducing/oxidizing [38][39][40]. Meanwhile, the feature related with the SEI film gradually disappears from the CV profiles.…”

Section: Resultsmentioning

confidence: 98%

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

et al. 2015

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Section: Resultsmentioning

confidence: 98%

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

et al. 2015

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“…As mentioned earlier, the Sn‐containing perovskites generally degrade rapidly due to their propensity to oxidation, which engenders the poor reproducibility and device performance . To address this issue, we have recently introduced AA, which is a decent antioxidant as additive to assist the processing of Sn‐containing perovskite . It was revealed that the AA additive can not only retard the Sn +2 oxidation but also promote the film formation since the counter anion of AA can serve as a Lewis base to modulate the crystallization kinetics and to passivate the associated Sn‐derived defects.…”

Section: Resultsmentioning

confidence: 99%

High‐Performance Near‐IR Photodetector Using Low‐Bandgap MA_0.5FA_0.5Pb_0.5Sn_0.5I₃ Perovskite

Chueh

Jing

et al. 2017

Adv Funct Materials

116

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Photodetectors with ultrafast response are explored using inorganic/organic hybrid perovskites. High responsivity and fast optoelectronic response are achieved due to the exceptional semiconducting properties of perovskite materials. However, most of the perovskite-based photodetectors exploited to date are centered on Pb-based perovskites, which only afford spectral response across the visible spectrum. This study demonstrates a high-performance near-IR (NIR) photodetector using a stable low-bandgap Sn-containing perovskite, (CH 3 NH 3 ) 0.5 (NH 2 CHNH 2 ) 0.5 Pb 0.5 Sn 0.5 I 3 (MA 0.5 FA 0.5 Pb 0.5 Sn 0.5 I 3 ), which is processed with an antioxidant additive, ascorbic acid (AA). The addition of AA effectively strengthens the stability of Sn-containing perovskite against oxygen, thereby significantly inhibiting the leakage current. Consequently, the derived photodetector shows high responsivity with a detectivity of over 10 12 Jones ranging from 800 to 970 nm. Such low-cost, solution processable NIR photodetectors with high performance show promising potential for future optoelectronic applications.

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“…7(a 1 , b 1 )) on one hand and further growth of the constitutional nanorods during the high-temperature annealing on the other hand. 48 The BET surface area of the present hierarchical γ-BaB 2 O 4 hollow microspheres was somehow smaller than that of the hierarchical porous MgBO 2 (OH) microspheres (57.22 m 2 g -1 ), 6 whereas larger than that of the porous Ca(BO 2 ) 2 microspheres (42.7 m 2 g -1 ), 12 flower-like Bi 2 MoO 6 hollow spheres (40.0 m 2 g -1 ), 36 CoFe 2 O 4 microspheres (32.3 m 2 g -1 ), 37 and SrCO 3 submicron spheres (40.2 m 2 g -1 ), 38 suggesting potential applications of the present hollow microspheres in catalysis, adsorption and etc. Fig.…”

Section: Hierarchical Porous Structure Of the γ-Bab 2 O 4 And β-Bab 2mentioning

confidence: 91%

Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

Chen

Zhai

et al. 2016

RSC Adv.

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Three-dimensional (3D) hierarchical metal borates nanoarchitectures have attracted extensive concern for their wide employment owing to the versatile compositions and unique properties, whose rational design and facile synthesis with high uniformity and complex interiors have been long remained a great challenge. In this contribution, hierarchical γ-BaB 2 O 4 hollow microspheres assembled by one-dimensional (1D) nanorods were successfully synthesized by a facile ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) assisted hydrothermal method (180 ºC, 12 h), using Ba(OH) 2 ·8H 2 O and H 3 BO 3 as the raw materials. The effects of process parameters were investigated in detail, and based on which a feasible formation mechanism was proposed. The hierarchical γ-BaB 2 O 4 hollow microspheres exhibited a specific surface area of 46.25 m 2 g -1 . The subsequent mild phase conversion (700 ºC, 3.0 h) led to the β-BaB 2 O 4 hollow microspheres with well-preserved spherical morphology and high crystallinity, indicating the hierarchical γ-BaB 2 O 4 and β-BaB 2 O 4 hollow microspheres of excellent thermostability. Both the hierarchical γ-BaB 2 O 4 and β-BaB 2 O 4 hollow microspheres exhibited a transparent characteristic from the ultraviolet to the visible region. Moreover, when employed as adsorbents, the hierarchical γ-BaB 2 O 4 hollow microspheres presented satisfactory adsorption properties for the removal of Pb 2+ from mimic waste water, suggesting that the great potential applications of the 3D * Corresponding authors. Tel.2 hierarchical porous or hollow nanoarchitectures of metal borates in future.

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Ascorbic acid-assisted synthesis of cobalt ferrite (CoFe2O4) hierarchical flower-like microspheres with enhanced lithium storage properties

Cited by 93 publications

References 54 publications

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

High‐Performance Near‐IR Photodetector Using Low‐Bandgap MA_0.5FA_0.5Pb_0.5Sn_0.5I₃ Perovskite

Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

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Ascorbic acid-assisted synthesis of cobalt ferrite (CoFe2O4) hierarchical flower-like microspheres with enhanced lithium storage properties

Cited by 93 publications

References 54 publications

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

Hollow nanospheres of mesoporous Co 9 S 8 as a high-capacity and long-life anode for advanced lithium ion batteries

High‐Performance Near‐IR Photodetector Using Low‐Bandgap MA0.5FA0.5Pb0.5Sn0.5I3 Perovskite

Hierarchical γ-BaB2O4 hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

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Product

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High‐Performance Near‐IR Photodetector Using Low‐Bandgap MA_0.5FA_0.5Pb_0.5Sn_0.5I₃ Perovskite

Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents