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金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 = = Infl...

蔣宗效

金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 = = Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries /

Record Type:	Language materials, printed : Monograph/item
Title/Author:	金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 =/ 蔣宗效.
Reminder of title:	Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries /
remainder title:	Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries.
Author:	蔣宗效
Published:	雲林縣 :國立虎尾科技大學 , : 民113.07.,
Description:	[12], 114面 :圖, 表 ; : 30公分.;
Notes:	指導教授: 林秀芬.
Subject:	metal oxides. -
Online resource:	電子資源

金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 = = Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries /
蔣宗效

金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 =Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries /Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries.蔣宗效. - 初版. - 雲林縣 :國立虎尾科技大學 ,民113.07. - [12], 114面 :圖, 表 ;30公分.

指導教授: 林秀芬.

碩士論文--國立虎尾科技大學材料科學與工程系材料科學與綠色能源工程碩士班.

含參考書目.

本研究採用商用人造石墨（MAGE-3）作為負極材料的基材，並以噴霧乾燥法及化學沉澱法進行表面改質，將MAGE-3表面分別摻入Nb2O5、ZnO及NiO元素，合成出MA-Nb、MA-Zn及MA-Ni複合負極材料，藉以改善其電化學性能。結晶繞射圖譜（XRD）結果顯示改質後的材料仍保持石墨碳本身的結構，且同時存在改質氧化物的特徵峰。顆粒尺寸分布（SLS）、表面形態分析（SEM）及能量散射光譜（EDS）分析結果顯示，改質元素均勻分布於石墨碳顆粒表面，且表面改質對於石墨顆粒尺寸並無顯著影響。電化學性能結果顯示，MAGE-3-Bare、MA-Nb、MA-Zn及MA-Ni經過100次充/放循環後，Li+脫出容量分別為284 mAh/g、364 mAh/g、330 mAh/g及357 mAh/g，電容量維持率分別為81.18 %、100 %、92.71 %及99.25 %。研究發現，石墨碳材經金屬氧化物改質後，形成的氧化物顆粒與石墨碳界面緊密連接，具有緩衝及支撐結構的作用，並可減緩Li+嵌入/脫出過程中所導致的體積膨脹。其中，在氮氣氣氛下並以630 ℃燒結處理後所形成的複合材料，由於Nb2O5與石墨碳之間產生的相互作用，經過充/放電循環後，可以有效緩解體積收縮/膨脹，維持複合材料的結構穩定性。此外，Nb2O5顆粒可提升電導率，提供更快速的電子轉移路徑，因而優化石墨碳材的電化學性能。除了半電池測試外，研究中還以TiO2-LNMO作為正極，改質與未改質石墨碳材料作為負極，組裝成CR-2032型全電池進行充/放電測試。將經過100次充/放循環後拆解電池，並對正/負極電極進行拉曼光譜（Raman）及X射線能譜（XPS）分析。結果得知，透過Nb2O5表面改質後，石墨碳表面形成了保護層，使其結構保持高度有序，並有效抑制材料表面與電解液的過度反應，減少因正極錳離子溶出所造成的副反應，保持材料結構的穩定性，因而顯著使電化學性能提升。.

(平裝)Subjects--Topical Terms:

1450224
metal oxides.

金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 = = Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries /
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245 1 0 $a 金屬氧化物改質對鋰電池石墨碳負極材料電化學性質影響研究 = $b Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries / $c 蔣宗效.
246 1 1 $a Influence of Metal Oxide Modification on the Electrochemical Properties of Graphite Carbon Anode Materials for Lithium Batteries.
250 $a 初版.
260 # $a 雲林縣 : $b 國立虎尾科技大學 , $c 民113.07.
300 $a [12], 114面 : $b 圖, 表 ; $c 30公分.
500 $a 指導教授: 林秀芬.
500 $a 學年度: 112.
502 $a 碩士論文--國立虎尾科技大學材料科學與工程系材料科學與綠色能源工程碩士班.
504 $a 含參考書目.
520 3 $a 本研究採用商用人造石墨（MAGE-3）作為負極材料的基材，並以噴霧乾燥法及化學沉澱法進行表面改質，將MAGE-3表面分別摻入Nb2O5、ZnO及NiO元素，合成出MA-Nb、MA-Zn及MA-Ni複合負極材料，藉以改善其電化學性能。結晶繞射圖譜（XRD）結果顯示改質後的材料仍保持石墨碳本身的結構，且同時存在改質氧化物的特徵峰。顆粒尺寸分布（SLS）、表面形態分析（SEM）及能量散射光譜（EDS）分析結果顯示，改質元素均勻分布於石墨碳顆粒表面，且表面改質對於石墨顆粒尺寸並無顯著影響。電化學性能結果顯示，MAGE-3-Bare、MA-Nb、MA-Zn及MA-Ni經過100次充/放循環後，Li+脫出容量分別為284 mAh/g、364 mAh/g、330 mAh/g及357 mAh/g，電容量維持率分別為81.18 %、100 %、92.71 %及99.25 %。研究發現，石墨碳材經金屬氧化物改質後，形成的氧化物顆粒與石墨碳界面緊密連接，具有緩衝及支撐結構的作用，並可減緩Li+嵌入/脫出過程中所導致的體積膨脹。其中，在氮氣氣氛下並以630 ℃燒結處理後所形成的複合材料，由於Nb2O5與石墨碳之間產生的相互作用，經過充/放電循環後，可以有效緩解體積收縮/膨脹，維持複合材料的結構穩定性。此外，Nb2O5顆粒可提升電導率，提供更快速的電子轉移路徑，因而優化石墨碳材的電化學性能。除了半電池測試外，研究中還以TiO2-LNMO作為正極，改質與未改質石墨碳材料作為負極，組裝成CR-2032型全電池進行充/放電測試。將經過100次充/放循環後拆解電池，並對正/負極電極進行拉曼光譜（Raman）及X射線能譜（XPS）分析。結果得知，透過Nb2O5表面改質後，石墨碳表面形成了保護層，使其結構保持高度有序，並有效抑制材料表面與電解液的過度反應，減少因正極錳離子溶出所造成的副反應，保持材料結構的穩定性，因而顯著使電化學性能提升。.
520 3 $a Commercial artificial graphite (MAGE-3) was used in this study as the substrate material for the negative electrode. Surface modification was carried out using the spray drying method and the chemical precipitation method to add Nb2O5, ZnO, and NiO to the MAGE-3 surface in order to synthesize the MA-Nb, MA-Zn, and MA-Ni composite negative electrode materials, respectively, to improve electrochemical performance. The result for the X-ray diffraction (XRD) crystallization pattern indicated that the modified material was able to maintain the structure of graphitic carbon and had characteristic peaks of the modified oxides. Further, the results for the particle size distribution (SLS), surface morphology analysis (SEM), and energy scattering spectroscopy (EDS) demonstrated that the modified elements were uniformly distributed across the surface of the graphite’s carbon particles and that the surface modification had no significant effect on the graphite’s particle size. The electrochemical performance revealed that the MAGE-3-Bare, MA-Nb, MA-Zn, and MA-Ni had a capacitance of 284, 364, 330, and 357 mAh/g, respectively, after 100 cycles of charging and discharging. Furthermore, the capacity maintenance rates were 81.18%, 100%, 92.71%, and 99.25%, respectively. It was found that the formed oxide particles were closely connected to the graphitic carbon interface after the graphite carbon material had been modified by the metal oxides, producing a cushioning and supporting structure to slow down the volume expansion caused by the Li+ embedding and removal processes. The composite material, which was manufactured through sintering at 630℃ in a nitrogen atmosphere, was able to effectively alleviate the volume shrinkage and expansion after charging and discharging cycles owing to the interaction between Nb2O5 and graphite carbon. This enabled the maintenance of the structural stability of the composite material. Moreover, the Nb2O5 particles enhanced electrical conductivity and provided a faster transfer path for electrons, thus optimizing the electrochemical performance of the graphite carbon material. In addition to the half-cell test, TiO2-LNMO was used as the cathode, while the modified and unmodified graphitic carbon materials were used as the anode to assemble a CR-2032 full cell for a charging and discharging test. The battery was disassembled after 100 charging and discharging cycles, and Raman spectroscopy and X-ray spectroscopy (XPS) analyses were conducted for the anode and cathode. The results demonstrated that the surface modification with Nb2O5 led to the production of a protective layer on the graphite carbon surface that keeps the structure highly organized and effectively inhibits over-interaction between the material surface and the electrolyte. This effect can reduce the secondary reaction caused by the dissolution of the positive manganese ions at the cathode and can help maintain the stability of the material structure, thereby significantly improving electrochemical performance..
563 $a (平裝)
650 # 4 $a metal oxides. $3 1450224
650 # 4 $a surface modification. $3 999089
650 # 4 $a manganese-based cathode material. $3 1450223
650 # 4 $a graphite-carbon-based anode material. $3 1450222
650 # 4 $a lithium-ion battery. $3 1049820
650 # 4 $a 金屬氧化物. $3 1450221
650 # 4 $a 表面改質. $3 999093
650 # 4 $a 錳基正極材料. $3 1450220
650 # 4 $a 石墨碳基負極材料. $3 1450219
650 # 4 $a 鋰離子電池. $3 1011591
856 7 # $u https://handle.ncl.edu.tw/11296/5p6sx8 $z 電子資源 $2 http