| 1. |
- Du, Hao, et al.
(författare)
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Easily recyclable lithium-ion batteries : Recycling-oriented cathode design using highly soluble LiFeMnPO4 with a water-soluble binder
- 2023
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Ingår i: Battery Energy. - : John Wiley & Sons. - 2768-1688 .- 2768-1696. ; 2:4, s. 1-9
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Tidskriftsartikel (refereegranskat)abstract
- Recycling lithium-ion batteries (LIBs) is fundamental for resource recovery, reducing energy consumption, decreasing emissions, and minimizing environmental risks. The inherited properties of materials and design are not commonly attributed to the complexity of recycling LIBs and their effects on the recycling process. The state-of-the-art battery recycling methodology consequently suffers from poor recycling efficiency and high consumption from issues with the cathode and the binder material. As a feasibility study, high-energy-density cathode material LiFeMnPO4 with a water-soluble polyacrylic acid (PAA) binder is extracted with dilute hydrochloric acid at room temperature under oxidant-free conditions. The cathode is wholly leached with high purity and is suitable for reuse. The cathode is easily separated from its constituent materials and reduces material and energy consumption during recycling by 20% and 7%, respectively. This strategy is utilized to fabricate recyclable-oriented LiFeMnPO4/graphite LIBs with a PAA binder and carbon paper current collector. Finally, the limitation of the solubility of the binder is discussed in terms of recycling. This research hopefully provides guidance for recycling-oriented design for the circular economy of the LIB industry.
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| 2. |
- Du, Hao, et al.
(författare)
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Recovery of lithium salt from spent lithium-ion battery by less polar solvent wash and water extraction
- 2023
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Ingår i: Carbon Neutralization. - : John Wiley & Sons. - 2769-3325 .- 2769-3325. ; 2:4, s. 416-424
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Tidskriftsartikel (refereegranskat)abstract
- The lithium hexafluorophosphate (LiPF6) in spent lithium-ion batteries (LIBs) is a potentially valuable resource and a significant environmental pollutant. Unfortunately, most of the LiPF6 in a spent LIB is difficult to extract because the electrolyte is strongly adsorbed by the cathode, anode, and separator. Storing extracted electrolyte is also challenging because it contains LiPF6, which promotes the decomposition of the solvent. Here we show that electrolytes in spent LIBs can be collected by a less polar solvent dimethyl carbonate (DMC) wash, and LiPF6 can be concentrated by simple aqueous extraction by lowering ethylene carbonate (EC) content in the recycled electrolyte. Due to the similar dielectric constant of EC and water, reducing the content of EC in LIB electrolytes, or even eliminating it, facilitates the separation of water and electrolyte, thus enabling the lithium salts in the electrolyte to be separated from the organic solvent. The lithium salt extracting efficiency achieved in this way can be as high as 99.8%, and fluorine and phosphorus of LiPF6 can be fixed in the form of stable metal fluoride and phosphate by hydrothermal method. The same strategy can be used in industrial waste electrolyte recycling by diluting the waste with DMC and extracting the resulting solution with water. This work thus reveals a new route for waste electrolyte treatment and will also support the development of advanced EC-free electrolytes for high-performance, safe, and easily recyclable LIBs.
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| 3. |
- Hermann, Florian M., et al.
(författare)
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An insulin hypersecretion phenotype precedes pancreatic beta cell failure in MODY3 patient-specific cells
- 2023
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Ingår i: Cell Stem Cell. - : Elsevier. - 1934-5909 .- 1875-9777. ; 30:1, s. 38-51
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Tidskriftsartikel (refereegranskat)abstract
- MODY3 is a monogenic hereditary form of diabetes caused by mutations in the transcription factor HNF1A. The patients progressively develop hyperglycemia due to perturbed insulin secretion, but the pathogenesis is unknown. Using patient-specific hiPSCs, we recapitulate the insulin secretion sensitivity to the membrane depolarizing agent sulfonylurea commonly observed in MODY3 patients. Unexpectedly, MODY3 patient -specific HNF1A+/R272C R cells hypersecrete insulin both in vitro and in vivo after transplantation into mice. Consistently, we identified a trend of increased birth weight in human HNF1A mutation carriers compared with healthy siblings. Reduced expression of potassium channels, specifically the KATP channel, in MODY3 0 cells, increased calcium signaling, and rescue of the insulin hypersecretion phenotype by pharmacological targeting ATP-sensitive potassium channels or low-voltage-activated calcium channels suggest that more efficient membrane depolarization underlies the hypersecretion of insulin in MODY3 0 cells. Our findings identify a pathogenic mechanism leading to 0 cell failure in MODY3.
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| 4. |
- Hermann, Florian M., et al.
(författare)
-
An insulin hypersecretion phenotype precedes pancreatic β cell failure in MODY3 patient-specific cells
- 2023
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Ingår i: Cell Stem Cell. - : Elsevier BV. - 1934-5909. ; 30:1, s. 8-51
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Tidskriftsartikel (refereegranskat)abstract
- MODY3 is a monogenic hereditary form of diabetes caused by mutations in the transcription factor HNF1A. The patients progressively develop hyperglycemia due to perturbed insulin secretion, but the pathogenesis is unknown. Using patient-specific hiPSCs, we recapitulate the insulin secretion sensitivity to the membrane depolarizing agent sulfonylurea commonly observed in MODY3 patients. Unexpectedly, MODY3 patient-specific HNF1A+/R272C β cells hypersecrete insulin both in vitro and in vivo after transplantation into mice. Consistently, we identified a trend of increased birth weight in human HNF1A mutation carriers compared with healthy siblings. Reduced expression of potassium channels, specifically the KATP channel, in MODY3 β cells, increased calcium signaling, and rescue of the insulin hypersecretion phenotype by pharmacological targeting ATP-sensitive potassium channels or low-voltage-activated calcium channels suggest that more efficient membrane depolarization underlies the hypersecretion of insulin in MODY3 β cells. Our findings identify a pathogenic mechanism leading to β cell failure in MODY3.
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| 5. |
- Li, Chenglei, et al.
(författare)
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Room-temperature direct regeneration of spent LiFePO4 cathode using the external short circuit strategy
- 2023
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Ingår i: Next Sustainability. - : Elsevier. - 2949-8236.
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Tidskriftsartikel (refereegranskat)abstract
- Lithium iron phosphate batteries (LFP), widely used as power sources, are forecasted to reach the terawatt-hour scale, inevitably leading to battery waste and expediating the urgency for effective recycling processes for LFP. The modern recycling methodologies based on material recovery face significant economic, environmental, and energy consumption challenges. This research attempts to resolve these challenges by providing direct cathode regeneration based on the principles of an external short-circuit to replenish lithium lost in the spent cathode with lithiated materials (LiC6, Li metal). Given that most active lithium loss in the cathode is caused by the growth of the solid electrolyte interphase rather than structural damage, restoring the lost lithium can revitalize a spent cathode battery’s electrochemical performance to a near-original state. The lithium loss in LFP cathodes ranging from 20% to 80% was renewed by supplementing lithium. Relithiation of 10Ah commercial LFP spent cathode showed revitalized electrochemical performance. Compared to the modern recycling methods, direct cathode regeneration improves the economic benefits of recycling by 33%, decreases energy consumption by 48%, and reduces carbon emissions by 62%. Direct cathode regeneration provides a scaffold for the next generation of recycling methods to improve recycling efficiency while reducing their environmental footprint.
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