Facile conversion of waste glass into Li storage materials
- Authors
- Lee, Seung-Su; Park, Cheol-Min
- Issue Date
- 21-Mar-2019
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- GREEN CHEMISTRY, v.21, no.6, pp 1439 - 1447
- Pages
- 9
- Journal Title
- GREEN CHEMISTRY
- Volume
- 21
- Number
- 6
- Start Page
- 1439
- End Page
- 1447
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/25550
- DOI
- 10.1039/c9gc00042a
- ISSN
- 1463-9262
1463-9270
- Abstract
- The development of recycling technology for waste glass is crucial because numerous types of waste glass are generated daily. To recycle waste glass, we developed a facile conversion technology for turning waste glass into high-capacity Li storage materials. Nanostructured Si-based composites were synthesized by a simple solid-state synthesis method using three waste glass types: soda-lime, borosilicate, and quartz. Firstly, various waste glass types were mechanically crushed into powders, after which they were reduced into Si using a Mg reducing agent powder by a simple high-energy ball-milling (BM) process, forming composites comprising Si and MgO (Si/MgO). The potentials of these composites for use as Li-ion battery (LIB) anodes were investigated. To further enhance the electrochemical performances of the Si/MgO composites, amorphous C-modified composites (Si/MgO/C) were simply prepared by further high-energy BM processing for 0.5 h. The Si/MgO/C composites comprised well-dispersed nanocrystalline Si, Li-inactive MgO, and various Li-inactive oxides from the additives used for glass formation within the buffering amorphous C matrices. The Si/MgO/C composites prepared by the facile recycling of waste borosilicate and quartz glasses exhibited high reversible capacities of 487 and 549 mA h g(-1) and stable capacity retentions of approximately 100% and 93% after 200 cycles, respectively.
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