| dc.identifier.uri | http://hdl.handle.net/11401/76348 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Thesis | |
| dcterms.abstract | Lithium ion batteries (LIBs) are expected to be used for energy storage in electric vehicles (EVs) as well as for load leveling for photovoltaic power generation or wind power generation. For the LIBs in EVs, Spinel-type Li4Ti5O12 (LTO) has been investigated as an alternative anode material. However, the disadvantage of LTO as an anode is the low electronic conductivity resulting from its insulating ionic crystal structure. On the other hand, ramsdellite-type Li2Ti3O7 (RLTO) already has good electrical conductivity. In our research, LTO nano powders were synthesized/reprocessed by RTP processing and the stability of Li4Ti5O12 was successfully studied by XRD measurement and half-quantitate calculation based on XRD results. By introducing a new method to synthesis/process Li4Ti5O12, we were able to synthesis a new Li4Ti5O12 - Li2Ti3O7 nanocomposite. The components were also studied by changing the annealing environment (annealing temperature, holding time, and atmosphere). This shows a final state of LTO using rapid thermo annealing as a synthesis/reprocessing method can be reached when annealing temperature is higher than 900 ℃ or the holding time ≥ 60 seconds at 880 ℃ , with a result of a composition of 25.4% Li2Ti3O7 and 74.6% Li4Ti5O12. The electrochemical properties of annealed LTO were also studied which showed a better capacity and better cyclability. | |
| dcterms.available | 2017-09-20T16:50:04Z | |
| dcterms.contributor | Su, Dong | en_US |
| dcterms.contributor | Gersappe, Dilip | en_US |
| dcterms.contributor | Venkatesh, T. A.. | en_US |
| dcterms.creator | Sun, Zelun | |
| dcterms.dateAccepted | 2017-09-20T16:50:04Z | |
| dcterms.dateSubmitted | 2017-09-20T16:50:04Z | |
| dcterms.description | Department of Materials Science and Engineering. | en_US |
| dcterms.extent | 55 pg. | en_US |
| dcterms.format | Monograph | |
| dcterms.format | Application/PDF | en_US |
| dcterms.identifier | http://hdl.handle.net/11401/76348 | |
| dcterms.issued | 2015-08-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2017-09-20T16:50:04Z (GMT). No. of bitstreams: 1
Sun_grad.sunysb_0771M_11886.pdf: 1175354 bytes, checksum: fd4142e1fed318e90ef090e138d5903f (MD5)
Previous issue date: 2014 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | Materials Science | |
| dcterms.title | Synthesis, structure, and electrochemical Li-ion intercalation properties of Li4Ti5O12 - Li2Ti3O7 nanocomposites | |
| dcterms.type | Thesis | |
