國立高雄大學圖資館 |

Language: English

Back

利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 = Synthesis o...

國立高雄大學應用化學系碩士班

利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 = Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route

Record Type:	Language materials, printed : monographic
Paralel Title:	Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route
Author:	鄭思齊,
Secondary Intellectual Responsibility:	國立高雄大學
Place of Publication:	[高雄市]
Published:	撰者;
Year of Publication:	民99[2010]
Description:	83面圖，表 : 30公分;
Subject:	鋰離子電池
Subject:	Lithium-ion battery
Online resource:	http://handle.ncl.edu.tw/11296/ndltd/43212467383378084361
Summary:	磷酸鋰鐵具有製備成本低、結構熱穩定性佳、安全性佳、無毒性、高能量密度、高輸出功率等優點，未來可望運用於電動車輛的動力來源，具有很高的發展潛力。然而磷酸鋰鐵在應用上有兩大缺點，分別為導電度差與鋰離子擴散限制。　　本研究藉由乳化沉澱法製備磷酸鋰鐵/碳複合材料，利用界面活性劑有效地製備奈米級沉澱粒子，而且殘留於粒子表面的界面活性劑經熱裂解形成碳，可均勻披覆於粒子表面，增加材料的導電度。經由 X-ray 粉末繞射儀、動態光散射粒徑分析儀、BET 比表面積分析、掃描式電子顯微鏡、穿透式電子顯微鏡、元素分析儀、循環伏安法、交流阻抗分析及充放電測試，顯示使用 Brij® 30 微乳化系統可製備出直徑小於 100 nm 的磷酸鋰鐵粒子，在 0.1 C 放電速率下電容為 127 mAh/g，在 10 C 放電速率下電容仍可維持 89 mAh/g。 LiFePO4 cathode composite materials possess many properties attractive for use in electric vehicles. These properties include, but are not limited to, high theoretical capacity (170 mAh/g), environmental friendliness, low cost, high thermal stability, and good cycle stability. It has recently been shown that cathodes prepared with LiFePO4 have very low, Li-ion diffusion limited, electronic conductivity. To prepare LiFePO4 cathode materials with greater conductivity and mobility of Li-ions, we prepared several LiFePO4/C composite powders by emulsion-precipitation. Emulsion-precipitation, when used in conjunction with surfactants, can yield LiFePO4/C composites consisting of carbon coated nanoparticles with improved conductivity and mobility of Li-ions through the matrix. Samples prepared with this method were analyzed and it was determined that samples prepared with Brij® 30 are less than 100 nm in size and their discharge capacities are 127 mAh/g at 0.1 C and 89 mAh/g at 10 C.

利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 = Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route
鄭, 思齊

利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 = Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route / 鄭思齊撰 - [高雄市] : 撰者, 民99[2010]. - 83面 ; 圖，表 ; 30公分.
參考書目：面.
鋰離子電池Lithium-ion battery

利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 = Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route
LDR:03071nam0a2200277 450 001 273045
005 20170214092854.0
009 273045
010 0 $b 精裝
010 0 $b 平裝
100 $a 20170214y2010 k y0chiy05 e
101 1 $a chi $d chi $d eng
102 $a tw
105 $a ak am 000yy
200 1 $a 利用乳化沉澱法合成磷酸鋰鐵/碳複合材料之研究 $d Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route $f 鄭思齊撰
210 $a [高雄市] $c 撰者 $d 民99[2010]
215 0 $a 83面 $c 圖，表 $d 30公分
314 $a 指導教授：陳振興博士
320 $a 參考書目：面
328 $a 碩士論文--國立高雄大學應用化學系碩士班
330 $a 　　磷酸鋰鐵具有製備成本低、結構熱穩定性佳、安全性佳、無毒性、高能量密度、高輸出功率等優點，未來可望運用於電動車輛的動力來源，具有很高的發展潛力。然而磷酸鋰鐵在應用上有兩大缺點，分別為導電度差與鋰離子擴散限制。　　本研究藉由乳化沉澱法製備磷酸鋰鐵/碳複合材料，利用界面活性劑有效地製備奈米級沉澱粒子，而且殘留於粒子表面的界面活性劑經熱裂解形成碳，可均勻披覆於粒子表面，增加材料的導電度。經由 X-ray 粉末繞射儀、動態光散射粒徑分析儀、BET 比表面積分析、掃描式電子顯微鏡、穿透式電子顯微鏡、元素分析儀、循環伏安法、交流阻抗分析及充放電測試，顯示使用 Brij® 30 微乳化系統可製備出直徑小於 100 nm 的磷酸鋰鐵粒子，在 0.1 C 放電速率下電容為 127 mAh/g，在 10 C 放電速率下電容仍可維持 89 mAh/g。 LiFePO4 cathode composite materials possess many properties attractive for use in electric vehicles. These properties include, but are not limited to, high theoretical capacity (170 mAh/g), environmental friendliness, low cost, high thermal stability, and good cycle stability. It has recently been shown that cathodes prepared with LiFePO4 have very low, Li-ion diffusion limited, electronic conductivity. To prepare LiFePO4 cathode materials with greater conductivity and mobility of Li-ions, we prepared several LiFePO4/C composite powders by emulsion-precipitation. Emulsion-precipitation, when used in conjunction with surfactants, can yield LiFePO4/C composites consisting of carbon coated nanoparticles with improved conductivity and mobility of Li-ions through the matrix. Samples prepared with this method were analyzed and it was determined that samples prepared with Brij® 30 are less than 100 nm in size and their discharge capacities are 127 mAh/g at 0.1 C and 89 mAh/g at 10 C.
510 1 $a Synthesis of LiFePO4/C Composite by the Emulsion-Precipitation Route
610 0 $a 鋰離子電池 $a 磷酸鋰鐵 $a 乳化 $a 沉澱
610 1 $a Lithium-ion battery $a LiFePO4 $a Emulsion $a Precipitation
681 $a 008M/0019 $b 421202 8760 $v 2007年版
700 1 $a 鄭 $b 思齊 $4 撰 $3 483186
712 0 2 $a 國立高雄大學 $b 應用化學系碩士班 $3 166131
801 0 $a tw $b 國立高雄大學 $c 20101228 $g CCR
856 7 $z 電子資源 $2 http $u http://handle.ncl.edu.tw/11296/ndltd/43212467383378084361