東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Synthesis and characterization of Li...

Yerramilli, Anish.

FindBook

Google Book

Amazon

博客來

Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2./
作者:	Yerramilli, Anish.
面頁冊數:	77 p.
附註:	Source: Masters Abstracts International, Volume: 52-04.
Contained By:	Masters Abstracts International52-04(E).
標題:	Engineering, General. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1550827
ISBN:	9781303666957

Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2.
Yerramilli, Anish.

Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2. - 77 p.

Source: Masters Abstracts International, Volume: 52-04.

Thesis (M.S.)--Colorado State University, 2013.

Energy storage technology has been dominated by lithium ion batteries, which are considered the most promising with higher energy density compared to any other battery technologies. The market for lithium ion batteries has increased rapidly from 2007. Goals set by the U.S Department of Energy for hybrid electric vehicles have not been met by any of the existing cathode materials. The objective of this thesis was to find a material composition that has better cyclability and lower cost than the standard battery materials. A ternary composition with low cost materials like Al, Mn and Ni were used instead of high amounts of Co to reduce the cost of the battery. It was hypothesized that there are cathode compositions in the system (1-x-y) LiNi0.8Co0.15Al0.05O2.xLi2MnO3.yLiCoO2 that when tested for discharge capacities and cyclability will show better properties than the current generation lithium ion cathode materials. The system (1-x-y) LiNi0.8Co0.15Al0.05O2.xLi2MnO3.yLiCoO2 is synthesized using a simple sol-gel synthesis. The materials LiNi0.8Co0.15Al0.05O2, Li2MnO3 and LiCoO2 were used as end points in a ternary composition diagram. Twenty eight cathode compositions spanning the entire ternary composition diagram were synthesized under the same conditions and characterized using X-ray diffraction (XRD) and an Arbin BT2000 battery testing system. XRD results showed &agr;-NaFeO2 structure with a space group of R3m. The results from electrochemical testing revealed a wide range of electrochemical capacities and cyclabilities. The regions close to Li2MnO3 showed high capacities and cyclability. The material with composition Li1.5 Ni0.133Co0.358Al0.008Mn0.5 had an initial discharge capacity of 216.3 mAh/g and retained this capacity even after multiple cycles in the voltage range of 4.6-2 V at a rate of C/15. Statistical analysis was done using SAS/STAT 9.2 with the ADX procedure to fit a general linear model with three linear terms and three two way interactions to map capacities and cyclabilities. This analysis was used to choose the compositions with best capacities and cyclability. Inductively couple plasma (ICP) analysis was carried out on the chosen samples to find the error between calculated composition and the theoretical composition. XPS (X-ray photoelectron spectroscopy) was conducted for the chosen samples and the oxidation states of the elements were determined. The material with composition Li1.5 Ni0.133Co0.358Al0.008Mn0.5 was found to be the promising material for commercialization. Before going into the market additional changes like synthesis conditions and surface treatments should be conducted on the material.

ISBN: 9781303666957Subjects--Topical Terms:

1020744
Engineering, General.

Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2.
LDR:03594nam a2200289 4500 001 1965683
005 20141029122151.5
008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781303666957
035 $a (MiAaPQ)AAI1550827
035 $a AAI1550827
040 $a MiAaPQ $c MiAaPQ
100 1 $a Yerramilli, Anish. $3 2102377
245 1 0 $a Synthesis and characterization of Lithium-ion cathode materials in the system (1-x-y) LiNi0.8Co0.15Al0.05O 2.xLi2MnO3.yLiCoO2.
300 $a 77 p.
500 $a Source: Masters Abstracts International, Volume: 52-04.
500 $a Adviser: Susan P. James.
502 $a Thesis (M.S.)--Colorado State University, 2013.
520 $a Energy storage technology has been dominated by lithium ion batteries, which are considered the most promising with higher energy density compared to any other battery technologies. The market for lithium ion batteries has increased rapidly from 2007. Goals set by the U.S Department of Energy for hybrid electric vehicles have not been met by any of the existing cathode materials. The objective of this thesis was to find a material composition that has better cyclability and lower cost than the standard battery materials. A ternary composition with low cost materials like Al, Mn and Ni were used instead of high amounts of Co to reduce the cost of the battery. It was hypothesized that there are cathode compositions in the system (1-x-y) LiNi0.8Co0.15Al0.05O2.xLi2MnO3.yLiCoO2 that when tested for discharge capacities and cyclability will show better properties than the current generation lithium ion cathode materials. The system (1-x-y) LiNi0.8Co0.15Al0.05O2.xLi2MnO3.yLiCoO2 is synthesized using a simple sol-gel synthesis. The materials LiNi0.8Co0.15Al0.05O2, Li2MnO3 and LiCoO2 were used as end points in a ternary composition diagram. Twenty eight cathode compositions spanning the entire ternary composition diagram were synthesized under the same conditions and characterized using X-ray diffraction (XRD) and an Arbin BT2000 battery testing system. XRD results showed &agr;-NaFeO2 structure with a space group of R3m. The results from electrochemical testing revealed a wide range of electrochemical capacities and cyclabilities. The regions close to Li2MnO3 showed high capacities and cyclability. The material with composition Li1.5 Ni0.133Co0.358Al0.008Mn0.5 had an initial discharge capacity of 216.3 mAh/g and retained this capacity even after multiple cycles in the voltage range of 4.6-2 V at a rate of C/15. Statistical analysis was done using SAS/STAT 9.2 with the ADX procedure to fit a general linear model with three linear terms and three two way interactions to map capacities and cyclabilities. This analysis was used to choose the compositions with best capacities and cyclability. Inductively couple plasma (ICP) analysis was carried out on the chosen samples to find the error between calculated composition and the theoretical composition. XPS (X-ray photoelectron spectroscopy) was conducted for the chosen samples and the oxidation states of the elements were determined. The material with composition Li1.5 Ni0.133Co0.358Al0.008Mn0.5 was found to be the promising material for commercialization. Before going into the market additional changes like synthesis conditions and surface treatments should be conducted on the material.
590 $a School code: 0053.
650 4 $a Engineering, General. $3 1020744
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Engineering, Chemical. $3 1018531
690 $a 0537
690 $a 0794
690 $a 0542
710 2 $a Colorado State University. $b Mechanical Engineering. $3 2094110
773 0 $t Masters Abstracts International $g 52-04(E).
790 $a 0053
791 $a M.S.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1550827