Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies
Polymer binders and carbon conductivity enhancers are inevitably required to make improvements in structural durability and electrochemical performance of lithium-ion battery (LIB) electrodes, although these additive constituents incur weight and volume penalties on the overall battery capacity. Her...
| المؤلفون الرئيسيون: | , |
|---|---|
| التنسيق: | Journal article |
| اللغة: | English |
| منشور في: |
Elsevier
2023
|
| _version_ | 1826313808690282496 |
|---|---|
| author | Ho Lee, S Grant, PS |
| author_facet | Ho Lee, S Grant, PS |
| author_sort | Ho Lee, S |
| collection | OXFORD |
| description | Polymer binders and carbon conductivity enhancers are inevitably required to make improvements in structural durability and electrochemical performance of lithium-ion battery (LIB) electrodes, although these additive constituents incur weight and volume penalties on the overall battery capacity. Here, additive-free electrode architectures were successfully fabricated over 20 × 20 cm2 electrode areas using a layer-by-layer spray coating approach, with the ultimate goal to boost gravimetric/volumetric electrode capacity and to reduce the total cost of LIB cells. Initially, the binder fraction of spray-coated Li4Ti5O12 (LTO) electrodes was reduced progressively, from 40 to 0 wt%. The electrochemical behavior of electrodes was then re-optimized as a proportion of conductivity enhancers within the binder-free electrode decreased to zero. Further, the otherwise identical spray coating process was applied to manufacture LiFePO4 (LFP) positive electrodes, leading to all-additive-free full-cell LIB configurations with attractive energy density of ∼310 Wh/kg and power performance of ∼1500 W/kg. |
| first_indexed | 2024-03-07T07:54:48Z |
| format | Journal article |
| id | oxford-uuid:9e36da8b-3cd9-4a0b-b7d9-71ca70336934 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:20:49Z |
| publishDate | 2023 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:9e36da8b-3cd9-4a0b-b7d9-71ca703369342024-08-05T11:03:51ZSpray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9e36da8b-3cd9-4a0b-b7d9-71ca70336934EnglishSymplectic ElementsElsevier2023Ho Lee, SGrant, PSPolymer binders and carbon conductivity enhancers are inevitably required to make improvements in structural durability and electrochemical performance of lithium-ion battery (LIB) electrodes, although these additive constituents incur weight and volume penalties on the overall battery capacity. Here, additive-free electrode architectures were successfully fabricated over 20 × 20 cm2 electrode areas using a layer-by-layer spray coating approach, with the ultimate goal to boost gravimetric/volumetric electrode capacity and to reduce the total cost of LIB cells. Initially, the binder fraction of spray-coated Li4Ti5O12 (LTO) electrodes was reduced progressively, from 40 to 0 wt%. The electrochemical behavior of electrodes was then re-optimized as a proportion of conductivity enhancers within the binder-free electrode decreased to zero. Further, the otherwise identical spray coating process was applied to manufacture LiFePO4 (LFP) positive electrodes, leading to all-additive-free full-cell LIB configurations with attractive energy density of ∼310 Wh/kg and power performance of ∼1500 W/kg. |
| spellingShingle | Ho Lee, S Grant, PS Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title | Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title_full | Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title_fullStr | Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title_full_unstemmed | Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title_short | Spray fabrication of additive-free electrodes for advanced Lithium-Ion storage technologies |
| title_sort | spray fabrication of additive free electrodes for advanced lithium ion storage technologies |
| work_keys_str_mv | AT holees sprayfabricationofadditivefreeelectrodesforadvancedlithiumionstoragetechnologies AT grantps sprayfabricationofadditivefreeelectrodesforadvancedlithiumionstoragetechnologies |