Electrochemical Characteristics of Co-Substituted α- and β-Li5AlO4 as High-Specific Capacity Positive Electrode Materials
Copyright © 2020 American Chemical Society..
Electric vehicles and hybrid electric vehicles require batteries with higher energy densities than conventional batteries. Anion redox-type active materials have been proposed as new high-capacity positive electrode materials for Li-ion batteries with high-energy densities. Co-substituted Li5AlO4 is a novel and promising high-capacity positive electrode material for Li-ion batteries. In this study, we investigated the influence of different synthesis conditions on the enhancement of the specific capacity. The material prepared via mechanical alloying of β-Li5AlO4 with LiCoO2 at 300 rpm for 24 h exhibited a higher specific capacity than that prepared from α-Li5AlO4 and LiCoO2. Co-substituted β-Li5AlO4 demonstrated a specific capacity of approximately 250 mA h g-1. The specific capacity of Co-substituted α and β-Li5AlO4 increased with increasing Co content in the samples. According to X-ray absorption near edge structure measurements, the irreversible oxygen redox reaction and a reversible reaction involving the formation and consumption of peroxide were responsible for the charge compensation of Co-substituted β-Li5AlO4 and α-Li5AlO4, respectively.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:5 |
|---|---|
| Enthalten in: |
ACS omega - 5(2020), 27 vom: 14. Juli, Seite 16912-16918 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Okuda, Daisuke [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 28.09.2020 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1021/acsomega.0c02111 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM312621892 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM312621892 | ||
| 003 | DE-627 | ||
| 005 | 20231225144819.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1021/acsomega.0c02111 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1042.xml |
| 035 | |a (DE-627)NLM312621892 | ||
| 035 | |a (NLM)32685860 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Okuda, Daisuke |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Electrochemical Characteristics of Co-Substituted α- and β-Li5AlO4 as High-Specific Capacity Positive Electrode Materials |
| 264 | 1 | |c 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 28.09.2020 | ||
| 500 | |a published: Electronic-eCollection | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2020 American Chemical Society. | ||
| 520 | |a Electric vehicles and hybrid electric vehicles require batteries with higher energy densities than conventional batteries. Anion redox-type active materials have been proposed as new high-capacity positive electrode materials for Li-ion batteries with high-energy densities. Co-substituted Li5AlO4 is a novel and promising high-capacity positive electrode material for Li-ion batteries. In this study, we investigated the influence of different synthesis conditions on the enhancement of the specific capacity. The material prepared via mechanical alloying of β-Li5AlO4 with LiCoO2 at 300 rpm for 24 h exhibited a higher specific capacity than that prepared from α-Li5AlO4 and LiCoO2. Co-substituted β-Li5AlO4 demonstrated a specific capacity of approximately 250 mA h g-1. The specific capacity of Co-substituted α and β-Li5AlO4 increased with increasing Co content in the samples. According to X-ray absorption near edge structure measurements, the irreversible oxygen redox reaction and a reversible reaction involving the formation and consumption of peroxide were responsible for the charge compensation of Co-substituted β-Li5AlO4 and α-Li5AlO4, respectively | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Kobayashi, Hiroaki |e verfasserin |4 aut | |
| 700 | 1 | |a Ishikawa, Masashi |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t ACS omega |d 2016 |g 5(2020), 27 vom: 14. Juli, Seite 16912-16918 |w (DE-627)NLM264243048 |x 2470-1343 |7 nnns |
| 773 | 1 | 8 | |g volume:5 |g year:2020 |g number:27 |g day:14 |g month:07 |g pages:16912-16918 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acsomega.0c02111 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 5 |j 2020 |e 27 |b 14 |c 07 |h 16912-16918 | ||