{"created":"2023-05-15T11:59:31.381868+00:00","id":5984,"links":{},"metadata":{"_buckets":{"deposit":"6949396d-4fcb-4a9b-a36b-3c4c8bfbcb70"},"_deposit":{"created_by":18,"id":"5984","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"5984"},"status":"published"},"_oai":{"id":"oai:kyutech.repo.nii.ac.jp:00005984","sets":["6:7"]},"author_link":[],"item_20_date_granted_61":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2018-09-21"}]},"item_20_degree_grantor_59":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"九州工業大学 "}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"17104","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_20_degree_name_58":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（工学）"}]},"item_20_description_30":{"attribute_name":"目次","attribute_value_mlt":[{"subitem_description":"1 Introduction||2 Experimental methods||3 Synthesis and application of TiO2 nanopills derived from metal-organic framework for Na-ion battery||4 Synthesis and application of a feather-like MnO2 on carbon paper for sodium-ion battery||5 Synthesis and application of 2D titanium carbide Ti3C2 and its composite for sodium-ion battery||6 Synthesis and application of a novel Mo, Nb-based double transition metal carbide for Na-ion battery","subitem_description_type":"TableOfContents"}]},"item_20_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Sodium ion battery has been regarded as a promising alternative for commercial lithium ion battery due to the abundance of sodium resource and its safety. In order to achieve a power density as high as lithium ion batteries, it is crucial to develop appropriate electrode materials for sodium ion batteries. In this thesis, we synthesized four different kinds of nanostructured anode materials with low cost and relatively high specific capacity via facile methods. Furthermore, these four materials were applied as anode for sodium ion batteries. Moreover, the intrinsic connection between the material characteristic and their electrochemical properties were also studied. In Chapter 1, the background and research status of sodium ion batteries was introduced. In addition, the issues for the current research of sodium ion batteries and the objectives of this work have been clarified. In general, hard carbon material is the most widely studied anode material in sodium ion batteries with a relatively high theoretical specific capacity. However, the undesirable electrode stability, as well as the poor safety, restricted its application. Therefore, it is of great importance to developing novel anode materials with high power density, low cost and high safety. In a comparison of conventional anode materials, nanostructured materials have already been proved to possess better electrochemical properties due to their good electrochemical reactivity and shorter charge transmission paths. In Chapter 2, the reagents and apparatus used in this work have been listed. Furthermore, the preparation and assembling process of devices were displayed in this chapter. In addition, the physical characterization and electrochemical measurements for the as-prepared materials have been introduced, including SEM measurement, XRD measurement, cycling performance measurement, cyclic voltammetry and so on. In Chapter 3, porous TiO2 nanopills were prepared by using Ti-based metal-organic framework as a precursor and template via a simple two-step method. Furthermore, the porous TiO2 nanopills were employed as anode materials for sodium ion batteries and delivered relatively high specific capacity as well as excellent electrode stability. The excellent electrochemical performance of the TiO2 nanopills electrode may benefit from the porous structure, which could promote the diffusion of sodium ions and electrolyte, as well as shorten transmission distance attributed to the nanostructured particles. In Chapter 4, feather-like MnO2 nanostructure was in-situ grown on carbon paper by a facile hydrothermal method. Furthermore, the growth mechanism of the unique feather-like nanostructure was analyzed and proposed by studying the intermediate during the hydrothermal process. When applied as a binder-free anode for sodium ion batteries, excellent electrochemical performance could be achieved. The obtained high capacity, as well as excellent cycling stability, could be attributed to the open tunnel structure of MnO2 as well as the feather-like nanostructure, which contributed to the reversible insertion and storage of sodium ions. In Chapter 5, to improve the electrochemical performance of Ti3C2 （MXene）, we composited black phosphorous nanoparticles with exfoliated Ti3C2 via a multi-step method. When used as anode materials for sodium ion batteries, the black phosphorous/Ti3C2 nanocomposites exhibited higher specific capacity and better electrode stability than black phosphorous electrode and the Ti3C2 electrode. The improved performance for this composite could be due to the high theoretical specific capacity and 2D structure of black phosphorous, which promoted the insertion of sodium ions. The black phosphate （BP） nanoparticles also contributed to the increased active sites and specific surface area, and further promoted the storage capability of electrolyte and electrons. In Chapter 6, based on the research of the as-prepared MXene material in Chapter 5, we attempted to prepare a novel Nb, Mo-based double transition metal carbide by a low-temperature method. The relationship between the reaction time, molar ratio of raw materials and the phase and morphology of obtained products was investigated and analyzed in detail. Finally, the optimal synthesis condition was summarized, and a MoNb2SnC2 MAX material was obtained. Furthermore, this material was initially investigated as anode material for sodium ion batteries and exhibited good reversibility and cycling stability. In this work, the as-prepared four kinds of materials exhibited good electrochemical performance, attributing to the open tunnel crystal structure and high specific surface area. In addition, these investigations are also useful for the development of novel electrode materials for practical sodium ion batteries.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_20_description_5":{"attribute_name":"備考","attribute_value_mlt":[{"subitem_description":"九州工業大学博士学位論文 学位記番号：生工博甲第328号 学位授与年月日：平成30年9月21日 ","subitem_description_type":"Other"}]},"item_20_description_60":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_description":"平成30年度","subitem_description_type":"Other"}]},"item_20_dissertation_number_62":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第328号"}]},"item_20_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18997/00007194","subitem_identifier_reg_type":"JaLC"}]},"item_20_text_34":{"attribute_name":"アドバイザー","attribute_value_mlt":[{"subitem_text_value":"馬, 廷麗"}]},"item_20_version_type_63":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Li,  Huan","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-06-11"}],"displaytype":"detail","filename":"sei_k_328.pdf","filesize":[{"value":"6.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"sei_k_328.pdf","objectType":"fulltext","url":"https://kyutech.repo.nii.ac.jp/record/5984/files/sei_k_328.pdf"},"version_id":"f7b5fc95-48ad-4dfc-b5e3-b016b2e2ccae"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"sodium ion batteries","subitem_subject_scheme":"Other"},{"subitem_subject":"nanostructure","subitem_subject_scheme":"Other"},{"subitem_subject":"layer structure","subitem_subject_scheme":"Other"},{"subitem_subject":"specific capacity","subitem_subject_scheme":"Other"},{"subitem_subject":"stability","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Development of Nanostructured Anode Materials for High-Performance Sodium Ion Batteries","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Development of Nanostructured Anode Materials for High-Performance Sodium Ion Batteries","subitem_title_language":"en"},{"subitem_title":"高性能ナトリウムイオン電池のためのナノ構造を有するアイード材料の開発","subitem_title_language":"ja"}]},"item_type_id":"20","owner":"18","path":["7"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2019-06-11"},"publish_date":"2019-06-11","publish_status":"0","recid":"5984","relation_version_is_last":true,"title":["Development of Nanostructured Anode Materials for High-Performance Sodium Ion Batteries"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2024-01-16T02:10:38.984598+00:00"}