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| Nov. 7, 2023, 4:11 p.m. |
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[{"model": "core.projectfund", "pk": 31982, "fields": {"project": 9037, "organisation": 2, "amount": 0, "start_date": "2022-09-30", "end_date": "2026-09-29", "raw_data": 49838}}]
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| April 3, 2023, 1:27 p.m. |
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{"title": ["Development of Recyclable Hybrid Solid Electrolytes", "The Development of Recyclable Hybrid Solid Electrolytes for Battery Applications"], "description": ["\nThe rechargeable Li-ion battery is now considered the technology of choice for energy storage in an array of portable electronic devices. However, its application is limited by its use of dangerous organic liquid electrolytes. This has led to the development of all-solid-state batteries (ASSBs) and new solid electrolyte materials. Whilst numerous inorganic ceramics have been proposed as solid electrolytes, they often lack the mechanical flexibility and chemical stability needed to be used in ASSBs. In contrast, polymers such as poly(ethylene oxide) (PEO) demonstrate considerable mechanical flexibility and stability. However, there are significant issues with the practical conductivities they can achieve. As a result, hybrid or composite polymer-inorganic electrolytes (those that combine a polymer matrix with an inorganic ceramic) have gained attention as a suitable alternative, bringing together the favourable properties of each.\nThis project aims to design, synthesise and characterise new recyclable hybrid solid electrolytes based on poly(acetals) that exhibit high performance. We will explore the potential of poly(acetals) in hybrid electrolytes, assessing their ion transport mechanisms and performance whilst evaluating different inorganic ceramics to determine the optimal poly(acetals):ceramic combination. MD and DFT simulations will be used alongside experimental methods to gain insight into feasible ion mobility mechanisms within such systems. The performance of the poly(acetals) hybrid electrolytes prepared will be evaluated relative to current PEO-based electrolytes to determine their standing within the community of solid electrolytes.\n\n", "\nThe exponential growth in rechargeable battery technologies over the last 20 years is due to the rising demand for portable electronics, but more recently, batteries have become an increasingly important means of storing energy, to drive the use of renewable energy resources and decrease the impact of human activity on the environment. \n \nSince their development in the 1970s-80s, lithium ion (Li-ion) batteries have dominated the field, exhibited by the award of the Nobel Prize in Chemistry in 2019 to Goodenough, Whittingham and Yoshino. Li-ion batteries have enabled the development of electric vehicles and the storage of energy from renewable sources, such as solar and wind power. Their significant downfall, however, is the use of lithium salts in organic solvents as the cell's electrolyte, which are highly flammable and pose potential safety risks, such as fires and explosions. An explored alternative to these dangerous solvents are solid or semi-crystalline electrolytes (SEs), which have shown to improve the safety of Li-ion batteries, producing what is known as an all-solid-state battery (ASSB). \n \nThis PhD research encompasses the development of recyclable hybrid solid electrolytes for implementation into solid-state battery systems, with the hybrid element being a polymer/ceramic combination. Some polymers are capable of functioning effectively as electrolytes, and display the robust mechanical properties required for use in everyday devices, i.e., poly(ethylene oxide)s (PEO) displays considerable flexibility and chemical stability, making them excellent candidate materials for SEs. Yet, their commercialisation alone isn't feasible due to their inability to meet the practical conductivities required (~10-3 S cm-1) due to the frustrated transport of ions through the material. Therefore, polymer electrolytes can be combined with ceramic fillers such as Al2O3 or TiO2, drastically improving the ionic conductivity of the SEs, without affecting their mechanical strength. \n \nThe project explores the potential of such poly(acetals) in hybrid electrolytes, assessing their ion transport mechanisms using a combination of conventional and in situ solid-state NMR spectroscopy, in conjunction with impedance measurements and muon spin relaxation spectroscopy studies. The effects of structural parameters of the polymers such as monomer composition and degree of polymerisation on the resultant mechanical properties will be assessed, to enable the production of robust electrolytes. A range of different inorganic ceramics will also be evaluated to determine the optimal poly(acetal):ceramic combination. Key research in this area will be to evaluate the performance of the hybrid electrolytes prepared relative to current PEO-based electrolytes, to determine their standing within the community of solid electrolytes. Additionally, computational techniques, including atomistic modelling and DFT calculations will be utilised to understand the ion mobility within the new SE materials. \n \nThis project spans multiple EPSRC research areas including materials for energy applications, energy storage, polymer materials, materials engineering (ceramics), computational chemistry, and functional ceramics and inorganics, with the work falling under the themes of energy and manufacturing the future, as well as circular economy.\n\n"]}
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| April 3, 2023, 1:27 p.m. |
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{"external_links": []}
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| Jan. 28, 2023, 11:09 a.m. |
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[{"model": "core.projectfund", "pk": 31811, "fields": {"project": 9037, "organisation": 2, "amount": 0, "start_date": "2022-09-30", "end_date": "2026-09-29", "raw_data": 47784}}]
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| Jan. 28, 2023, 11:09 a.m. |
Created
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[{"model": "core.projectorganisation", "pk": 90486, "fields": {"project": 9037, "organisation": 38, "role": "LEAD_ORG"}}]
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| Jan. 28, 2023, 11:09 a.m. |
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[{"model": "core.projectperson", "pk": 56824, "fields": {"project": 9037, "person": 12911, "role": "STUDENT_PER"}}]
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| Jan. 28, 2023, 11:09 a.m. |
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[{"model": "core.projectperson", "pk": 56823, "fields": {"project": 9037, "person": 9041, "role": "SUPER_PER"}}]
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| Jan. 28, 2023, 10:52 a.m. |
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{"title": ["", "Development of Recyclable Hybrid Solid Electrolytes"], "description": ["", "\nThe rechargeable Li-ion battery is now considered the technology of choice for energy storage in an array of portable electronic devices. However, its application is limited by its use of dangerous organic liquid electrolytes. This has led to the development of all-solid-state batteries (ASSBs) and new solid electrolyte materials. Whilst numerous inorganic ceramics have been proposed as solid electrolytes, they often lack the mechanical flexibility and chemical stability needed to be used in ASSBs. In contrast, polymers such as poly(ethylene oxide) (PEO) demonstrate considerable mechanical flexibility and stability. However, there are significant issues with the practical conductivities they can achieve. As a result, hybrid or composite polymer-inorganic electrolytes (those that combine a polymer matrix with an inorganic ceramic) have gained attention as a suitable alternative, bringing together the favourable properties of each.\nThis project aims to design, synthesise and characterise new recyclable hybrid solid electrolytes based on poly(acetals) that exhibit high performance. We will explore the potential of poly(acetals) in hybrid electrolytes, assessing their ion transport mechanisms and performance whilst evaluating different inorganic ceramics to determine the optimal poly(acetals):ceramic combination. MD and DFT simulations will be used alongside experimental methods to gain insight into feasible ion mobility mechanisms within such systems. The performance of the poly(acetals) hybrid electrolytes prepared will be evaluated relative to current PEO-based electrolytes to determine their standing within the community of solid electrolytes.\n\n"], "extra_text": ["", "\n\n\n\n"], "status": ["", "Active"]}
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| Jan. 28, 2023, 10:52 a.m. |
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{"external_links": [36791]}
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| Jan. 28, 2023, 10:52 a.m. |
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[{"model": "core.project", "pk": 9037, "fields": {"owner": null, "is_locked": false, "coped_id": "cfdd6bfb-3bda-4538-9387-b5146e7fe662", "title": "", "description": "", "extra_text": "", "status": "", "start": null, "end": null, "raw_data": 47776, "created": "2023-01-28T10:51:22.731Z", "modified": "2023-01-28T10:51:22.731Z", "external_links": []}}]
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