Lithium–sulfur battery cathode design:Sulfur-infiltrated PVDF nanofiber-based Fe3O4 network for polysulfide adsorption and volume expansion suppression

Ma, Chaoyong; Yao, Chenqi; Tang, Zhiyong; Wang, Yan; Ou, Yun; Liu, Longfei; Song, Hongjia; Wang, Fang; Cheng, Jinquan

doi:10.1016/j.colsurfa.2023.131331

Cited by 7 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that the Fe3O4 is located within PVDF fibers, and the thickness of the film is about 100 µm. The magnetic field induced with the Fe3O4-PVDF composite network was reported in our previous work about the PVDF/Fe3O4 network for a sulfur cathode [28]. The Fe3O4 nanoparticles are at about 500 nm, which is within the PVDF fibers, and the 3D network interstitial structure with alternating overlapping fibers can effectively cope with the growth of lithium dendrites [29].…”

Section: Resultsmentioning

confidence: 68%

See 1 more Smart Citation

Fe3O4-PVDF Composite Network for Dendrite-Free Lithium Metal Batteries

Ou,

Ma,

Tang

et al. 2023

Nanomaterials

Self Cite

View full text Add to dashboard Cite

Dendrite growth has been the main trouble preventing the practical application of Li metal anodes. Herein, we present how an Fe3O4-PVDF composite network prepared by using electrospinning has been designed to protect lithium metal anodes effectively. In the symmetrical cells test, the cell with the Fe3O4-PVDF composite network maintains good cycle performance after 600 h (500 cycles) at a current density of 1 mA cm−2 and a plating/stripping capacity of 1 mAh cm−2. The bulky Li dendrite is suppressed and a uniform Li deposition remains after long cycling. The characteristics of this engineered separator are further demonstrated in Li-S full cells with a good cycle performance (capacity of 419 mAh g−1 after 300 cycles at 0.5 C). This work provides a new idea for the protection of lithium metal anodes.

show abstract

Section: Resultsmentioning

confidence: 68%

“…The preparation of the electrospinning PVDF precursor and Fe 3 O 4 -PVDF precursor was carried out as described in our previous work [28]. First, a PVDF precursor solution was synthesized.…”

Section: Experiments 21 Fe 3 O 4 -Pvdf Synthesismentioning

confidence: 99%

Fe3O4-PVDF Composite Network for Dendrite-Free Lithium Metal Batteries

Ou,

Ma,

Tang

et al. 2023

Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

“…23 As for the Fe 2p spectrum, the fitting peaks at ∼710.2 and 723.6 eV and its satellite peaks at 714.9 and 728.7 eV result from Fe 2+ , and the peaks at 712.2 and 725.7 eV originated from Fe 3+ , and 718.6 and 732.2 eV originated from its satellite peaks (Figure S6a). 24,25 The above results indicated that a small amount of iron element existed in the form of +2. Similarly, the Ni 2p spectrum confirmed that the nickel element existed in the form of +2 (Figure S6b).…”

Section: •−mentioning

confidence: 77%

A Carbonate-Involved Amplification Strategy for Cathodic Electrochemiluminescence of Luminol Triggered by the Catalase-like CoO Nanorods

Zhou

et al. 2023

Anal. Chem.

View full text Add to dashboard Cite

The lumiol-O2 electrochemiluminescence (ECL) system constantly emits bright light at positive potential. Notably, compared with the anodic ECL signal of the luminol-O2 system, the great virtues of cathodic ECL are that it is simple and causes minor damage to biological samples. Unfortunately, little emphasis has been paid to cathodic ECL, owing to the low reaction efficacy between luminol and reactive oxygen species. The state-of-the-art work mainly focuses on improving the catalytic activity of the oxygen reduction reaction, which remains a significant challenge. In this work, a synergistic signal amplification pathway is established for luminol cathodic ECL. The synergistic effect is based on the decomposition of H2O2 by catalase-like (CAT-like) CoO nanorods (CoO NRs) and regeneration of H2O2 by a carbonate/bicarbonate buffer. Compared with Fe2O3 nanorod (Fe2O3 NR)- and NiO microsphere-modified glassy carbon electrodes (GCEs), the ECL intensity of the luminol-O2 system is nearly 50 times stronger when the potential ranged from 0 to −0.4 V on the CoO NR-modified GCE in a carbonate buffer solution. The CAT-like CoO NRs decompose the electroreduction product H2O2 into OH· and O2 · –, which further oxidize HCO3 – and CO3 2– to HCO3 · and CO3 · –. These radicals very effectively interact with luminol to form the luminol radical. More importantly, H2O2 can be regenerated when HCO3 · dimerizes to produce (CO2)2*, which provides a cyclic amplification of the cathodic ECL signal during the dimerization of HCO3 ·. This work inspires developing a new avenue to improve cathodic ECL and deeply understand the mechanism of a luminol cathodic ECL reaction.

show abstract