Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries
碩士 === 國立成功大學 === 化學工程學系 === 103 === This study reports an anatase TiO2 nanotubes (TNT) and reduced graphene oxide (RGO) hybrid that is synthesized via an in situ hydrothermal process followed freezing dry treatment (f-TNT/RGO). The structure and performances are compared with TNT, f-TNT and TNT/RGO...
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ndltd-TW-103NCKU50630152016-05-22T04:40:56Z http://ndltd.ncl.edu.tw/handle/80466847136846210269 Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries 銳鈦礦二氧化鈦奈米管在鋰離子電池陽極的應用 Kuan-ChiehLai 賴冠杰 碩士 國立成功大學 化學工程學系 103 This study reports an anatase TiO2 nanotubes (TNT) and reduced graphene oxide (RGO) hybrid that is synthesized via an in situ hydrothermal process followed freezing dry treatment (f-TNT/RGO). The structure and performances are compared with TNT, f-TNT and TNT/RGO. The f-TNT/RGO were characterized by XRD, Raman, FTIR, TEM, SEM, BET and TGA, indicating the coexistence of anatase and minor TiO2-B with the reduction of GO. The structure and anchoring to RGO are confirmed, showing the vary difference between the product with/without RGO and especially freezing dry, each affects the agglomeration of particles and separation between tubes, which contribute to BET surface area. The dramatic incensement of f-TNT/RGO (278 m2g-1) comes from the pores in the network of tubes. The discharge curve and broad feature of CV below 1.7 V display the surface and interfacial Li+ storage from TiO2 with high surface area after freezing dry. The f-TNT/RGO exhibits better rate performance, 239 and 155 mA h g-1 can be obtained at 1 and 30 C. The AC impedance analysis leads to the lower charge transfer resistance of f-TNT/RGO, which is due to (1) high surface area which can afford more Li+ flow; (2) the interfacial Li+ storage (pseudo-capacity) and (3) a faster electron transport attributed to the RGO. 100 % retention of its value at the fifth cycle can be obtained after 100 cycles at 30 C, and retain at 94 % after another 100 cycles. Hsisheng Teng 鄧熙聖 2015 學位論文 ; thesis 85 zh-TW |
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碩士 === 國立成功大學 === 化學工程學系 === 103 === This study reports an anatase TiO2 nanotubes (TNT) and reduced graphene oxide (RGO) hybrid that is synthesized via an in situ hydrothermal process followed freezing dry treatment (f-TNT/RGO). The structure and performances are compared with TNT, f-TNT and TNT/RGO. The f-TNT/RGO were characterized by XRD, Raman, FTIR, TEM, SEM, BET and TGA, indicating the coexistence of anatase and minor TiO2-B with the reduction of GO. The structure and anchoring to RGO are confirmed, showing the vary difference between the product with/without RGO and especially freezing dry, each affects the agglomeration of particles and separation between tubes, which contribute to BET surface area. The dramatic incensement of f-TNT/RGO (278 m2g-1) comes from the pores in the network of tubes. The discharge curve and broad feature of CV below 1.7 V display the surface and interfacial Li+ storage from TiO2 with high surface area after freezing dry. The f-TNT/RGO exhibits better rate performance, 239 and 155 mA h g-1 can be obtained at 1 and 30 C. The AC impedance analysis leads to the lower charge transfer resistance of f-TNT/RGO, which is due to (1) high surface area which can afford more Li+ flow; (2) the interfacial Li+ storage (pseudo-capacity) and (3) a faster electron transport attributed to the RGO. 100 % retention of its value at the fifth cycle can be obtained after 100 cycles at 30 C, and retain at 94 % after another 100 cycles.
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author2 |
Hsisheng Teng |
author_facet |
Hsisheng Teng Kuan-ChiehLai 賴冠杰 |
author |
Kuan-ChiehLai 賴冠杰 |
spellingShingle |
Kuan-ChiehLai 賴冠杰 Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
author_sort |
Kuan-ChiehLai |
title |
Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
title_short |
Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
title_full |
Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
title_fullStr |
Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
title_full_unstemmed |
Anatase TiO2 Nanotubes as Anodes for Lithium Ion Batteries |
title_sort |
anatase tio2 nanotubes as anodes for lithium ion batteries |
publishDate |
2015 |
url |
http://ndltd.ncl.edu.tw/handle/80466847136846210269 |
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