A Note on Y J-Injectivity

Ming, Roger Yue Chi

doi:10.1515/dema-1997-0311

Cited by 11 publications

(17 citation statements)

References 4 publications

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“…This capacity corresponds to that found for MOF-5 exposed to greater than 50% relative humidity for 24 hours found by an earlier study. [30] This finding shows that H 2 will still be adsorbed by MOF-5 within a 3D printed ABS composite and that it shows no further degradation from humidity once the composite has been formed. Both of these conclusions are crucial for demonstrating the applicability of our approach.…”

Section: Figure 3 H 2 Adsorption and Desorption Profiles Of Abs-10% mentioning

confidence: 70%

“…We find that the MOF-5 within our composite shows a similar scattering pattern to a form that has been degraded by humidity. [30] XRD patterns for the other composites (1%, 5%, 20%, 30%, and 50%) are found in the supporting information and also show incorporation of degraded MOF-5. Figure 2.…”

Section: Resultsmentioning

confidence: 94%

“…A previous study showed that MOF-5 degradation becomes measurable when exposed to 50% relative humidity for 24 hours. [30] In our protocols, the most likely step where humidity are blended together at 195 °C. However, we expect that once MOF-5 is incorporated into the polymer (after the solvent casting step), the MOF will be less susceptible to ambient humidity.…”

Section: Resultsmentioning

confidence: 99%

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Toward 3D printed hydrogen storage materials made with ABS‐MOF composites

Channell

Sefa

Fedchak

et al. 2017

Polymers for Advanced Techs

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The push to advance efficient, renewable, and clean energy sources has brought with it an effort to generate materials that are capable of storing hydrogen. Metal-organic framework materials (MOFs) have been the focus of many such studies as they are categorized for their large internal surface areas. We have addressed one of the major shortcomings of MOFs (their processibility) by creating and 3D printing a composite of acrylonitrile butadiene styrene (ABS) and MOF-5, a prototypical MOF, which is often used to benchmark H 2 uptake capacity of other MOFs. The ABS-MOF-5 composites can be printed at MOF-5 compositions of 10% and below. Other physical and mechanical properties of the polymer (glass transition temperature, stress and strain at the breaking point, and Young's modulus) either remain unchanged or show some degree of hardening due to the interaction between the polymer and the MOF. We do observe some MOF-5 degradation through the blending process, likely due to the ambient humidity through the purification and solvent casting steps. Even with this degradation, the MOF still retains some of its ability to uptake H 2 , seen in the ability of the composite to uptake more H 2 than the pure polymer. The experiments and results described here represent a significant first step toward 3D printing MOF-5-based materials for H 2 storage.3

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Section: Figure 3 H 2 Adsorption and Desorption Profiles Of Abs-10% mentioning

confidence: 70%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Toward 3D printed hydrogen storage materials made with ABS‐MOF composites

Channell

Sefa

Fedchak

et al. 2017

Polymers for Advanced Techs

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“…CF x modified Fe 3 O 4 nanoparticles paired with high voltage LiNi 0.5 Mn 1.5 O 4 cathode with excellent cyclability of 100 cycles by Ming et al. [52] The same author reported the performance of porous carbon-Fe 3 O 4 composite with layered type LiNi 0.59 Co 0.16 Mn 0.25 O 2 [53].…”

mentioning

confidence: 99%

Exploring High‐Energy Li‐I(r)on Batteries and Capacitors with Conversion‐Type Fe₃O₄‐rGO as the Negative Electrode

et al. 2017

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We report a microwave‐assisted solvothermal process for the preparation of magnetite (Fe3O4, ca. 5 nm)‐anchored reduced graphene oxide (rGO). It has been examined as a prospective conversion‐type negative electrode for multiple energy storage applications, such as Li‐ion batteries (LIBs) and Li‐ion capacitors (LICs). A LiFePO4/Fe3O4‐rGO cell is constructed and capable of delivering an energy density of approximately 139 Wh kg−1 with a notable cyclability (ca. 76 %) after 500 cycles. Prior to the fabrication of a LIB, the Fe3O4‐rGO is electrochemically pretreated to eliminate the irreversible capacity loss. In addition to the LIB, a high‐energy LIC is also fabricated by using the pre‐lithiated Fe3O4‐rGO composite as the anode and commercial activated carbon as the cathode. This LIC registered a maximum energy density of approximately 114 Wh kg−1 with good cyclability. For both the LIB and LIC, the mass loading between the electrodes was adjusted based on the performance with metallic Li. The improved electrochemical performance of Fe3O4‐rGO over existing materials is a promising development in the quest for novel, fast, low cost, and efficient energy storage systems without compromising the eco‐friendliness

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“…This concept was introduced in [12]. Note that GP -injective modules defined here are also called Y J-injective modules in [6,10,[12][13][14]. Recall that a left R-module M is principally injective (briefly, pinjective) if for any principal left ideal Ra of R and any left R-homomorphism from Ra into M extends to one from R into M .…”

mentioning

confidence: 99%