國立虎尾科技大學 |

Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries/ Tianyuan Ma.
作者:	Ma, Tianyuan,
面頁冊數:	1 electronic resource (154 pages)
附註:	Source: Dissertations Abstracts International, Volume: 79-09, Section: B.
Contained By:	Dissertations Abstracts International79-09B.
標題:	Materials science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10680489
ISBN:	9780355563184

Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries
Ma, Tianyuan,

Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries [electronic resource] /Tianyuan Ma. - 1 electronic resource (154 pages)

Source: Dissertations Abstracts International, Volume: 79-09, Section: B.

Sodium-ion batteries (SIB) have been considered as a possible supplemental to lithium-ion batteries due to the low cost and high abundance of Na. Among all the cathode materials that have been studied in SIB, layered transition metal oxides, NaxMO2 (M= Mn, Ni, Co, Fe) with their binary and ternary derivatives are of great interest due to their high specific capacities. In order to get a better understanding of NaxMO2, it is important to decouple the mixing transition metals and carry out a thorough investigation on the end member of the series, such as NaxMnO2. On top of that, it is particularly attractive idea of the possibility in enabling NaxMnO2 or Mn based oxides as cathode material for SIBs due to its benefit of low cost and environmental friendly nature. The relationship between the synthetic conditions through solid-state synthesis route and the structure of as-prepared cathode material as well as the structure and the electrochemical performance was investigated using NaxMnO2 model material. The structural change during solid-state synthesis of P- and O'3-type NaxMnO2 were unveiled for the first time by taking advantage of in situ high energy X-ray diffraction (HEXRD) and in situ X-ray absorption near edge spectroscopy (XANES) technique. Electrochemical performance for NaxMnO2 with P2- and O'3-type were tested. Na2/3MnO2 with P2-type structure shows good reversible capacity and capacity retention but low Na stoichiometry, whereas NaMnO2 with O'3-type structure exhibits high Na stoichiometry and reversible capacity at beginning but fast capacity decay as cycle progresses. Moreover, the fundamental reasons behind the capacity fading was investigated. A few factors have been found that could responsible for the fast capacity decay, including irreversible phase transitions occurred at about 3.6 V, and slow kinetics of sodium insertion at the end of discharge. At last, a Ni and Co co-doping method was utilized in improving structural stability at high voltage for Mn rich sodium transition metal oxides. It was found out that the NaxNi0.19Co0.28Mn0.53O2 consists mixed P2/P3 structure, and its electrochemical performance cycled at a relatively high voltage, 2-4.5 V, can be further improved by a simple washing procedure. It is speculated that the preferred formation of transition metal vacancy around Ni for the sample after rinsing treatment is the key for better electrochemical performance.

English

ISBN: 9780355563184Subjects--Topical Terms:

557839
Materials science.
Subjects--Index Terms:

Cathode

Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries
LDR:03992nam a22004333i 4500 001 1172814
005 20260622113211.5
006 m o d
007 cr|nu||||||||
008 260803s2017 miu||||||m |||||||eng d
020 $a 9780355563184
035 $a (MiAaPQD)AAI10680489
035 $a (MiAaPQD)rochester:11565
035 $a AAI10680489
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Ma, Tianyuan, $e author. $3 1503411
245 1 0 $a Manganese Based Layered Oxides as Cathode Material for Sodium-ion Batteries $c Tianyuan Ma. $h [electronic resource] /
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 1 electronic resource (154 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 79-09, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisors: Jorne, Jacob Committee members: Funkenbusch, Paul; Kelley, Douglas; Tenhaeff, Wyatt.
502 $b Ph.D. $c University of Rochester $d 2017.
520 # $a Sodium-ion batteries (SIB) have been considered as a possible supplemental to lithium-ion batteries due to the low cost and high abundance of Na. Among all the cathode materials that have been studied in SIB, layered transition metal oxides, NaxMO2 (M= Mn, Ni, Co, Fe) with their binary and ternary derivatives are of great interest due to their high specific capacities. In order to get a better understanding of NaxMO2, it is important to decouple the mixing transition metals and carry out a thorough investigation on the end member of the series, such as NaxMnO2. On top of that, it is particularly attractive idea of the possibility in enabling NaxMnO2 or Mn based oxides as cathode material for SIBs due to its benefit of low cost and environmental friendly nature. The relationship between the synthetic conditions through solid-state synthesis route and the structure of as-prepared cathode material as well as the structure and the electrochemical performance was investigated using NaxMnO2 model material. The structural change during solid-state synthesis of P- and O'3-type NaxMnO2 were unveiled for the first time by taking advantage of in situ high energy X-ray diffraction (HEXRD) and in situ X-ray absorption near edge spectroscopy (XANES) technique. Electrochemical performance for NaxMnO2 with P2- and O'3-type were tested. Na2/3MnO2 with P2-type structure shows good reversible capacity and capacity retention but low Na stoichiometry, whereas NaMnO2 with O'3-type structure exhibits high Na stoichiometry and reversible capacity at beginning but fast capacity decay as cycle progresses. Moreover, the fundamental reasons behind the capacity fading was investigated. A few factors have been found that could responsible for the fast capacity decay, including irreversible phase transitions occurred at about 3.6 V, and slow kinetics of sodium insertion at the end of discharge. At last, a Ni and Co co-doping method was utilized in improving structural stability at high voltage for Mn rich sodium transition metal oxides. It was found out that the NaxNi0.19Co0.28Mn0.53O2 consists mixed P2/P3 structure, and its electrochemical performance cycled at a relatively high voltage, 2-4.5 V, can be further improved by a simple washing procedure. It is speculated that the preferred formation of transition metal vacancy around Ni for the sample after rinsing treatment is the key for better electrochemical performance.
546 $a English
590 $a School code: 0188
650 # 4 $a Materials science. $3 557839
653 # # $a Cathode
653 # # $a O-type structure
653 # # $a P-type structure
653 # # $a Sodium-ion batteries
653 # # $a Solid-state synthesis
690 $a 0794
710 2 # $a University of Rochester. $b Hajim School of Engineering and Applied Sciences. $3 1148592
720 1 $a Jorne, Jacob $e degree supervisor.
773 0 # $t Dissertations Abstracts International $g 79-09B.
790 $a 0188
791 $a Ph.D.
792 $a 2017
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10680489