Abstract
Here, as with previous work, atomic layer deposition (ALD) has been used to deposit Al 2 O 3 on positive electrode active materials, LiCoO 2 , to create a protective barrier layer, suppress the high potential phase transition, and thus reduce the subsequent Co dissolution. However, in this study it was found that it also resulted in the reduction of the charge transfer resistance at the positive electrode-electrolyte interface, thus enhancing the performance of the battery. Energy-dispersive X-ray spectroscopy, in conjunction with transmission electron microscopy, shows that a discrete Al 2 O 3 shell was not formed under the selected growth conditions and that the Al diffused into the bulk LiCoO 2 . The resulting active oxide material, which was significantly thicker than the nominally ALD growth rate would predict, is proposed to be of the form LiCoO 2 :Al with amorphous and crystalline regions depending on the Al content. The cells consisting of the modified electrodes were found to have good cycling stability and discharge capacities of ∼110 mA h g -1 (0.12 mA h cm -2 ) and ∼35 mA h g -1 (0.04 mA h cm -2 ) at 50 and 100 C, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 3277-3282 |
| Number of pages | 6 |
| Journal | ACS Applied Energy Materials |
| Volume | 1 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 23 2018 |
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Keywords
- Al O
- atomic layer deposition
- charge transfer
- high charge-discharge rate
- lithium ion batteries
- solid electrolyte interface
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
- Electrochemistry
- Materials Chemistry
- Electrical and Electronic Engineering
Cite this
Aluminum Interdiffusion into LiCoO 2 Using Atomic Layer Deposition for High Rate Lithium Ion Batteries . / Teranisi, Takasi; Yoshikawa, Yumi; Yoneda, Mika; Kishimoto, Akira; Halpin, Jennifer; O'Brien, Shane; Modreanu, Mircea; Povey, Ian M.
In: ACS Applied Energy Materials, Vol. 1, No. 7, 23.07.2018, p. 3277-3282.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Aluminum Interdiffusion into LiCoO 2 Using Atomic Layer Deposition for High Rate Lithium Ion Batteries
AU - Teranisi, Takasi
AU - Yoshikawa, Yumi
AU - Yoneda, Mika
AU - Kishimoto, Akira
AU - Halpin, Jennifer
AU - O'Brien, Shane
AU - Modreanu, Mircea
AU - Povey, Ian M.
PY - 2018/7/23
Y1 - 2018/7/23
N2 - Here, as with previous work, atomic layer deposition (ALD) has been used to deposit Al 2 O 3 on positive electrode active materials, LiCoO 2 , to create a protective barrier layer, suppress the high potential phase transition, and thus reduce the subsequent Co dissolution. However, in this study it was found that it also resulted in the reduction of the charge transfer resistance at the positive electrode-electrolyte interface, thus enhancing the performance of the battery. Energy-dispersive X-ray spectroscopy, in conjunction with transmission electron microscopy, shows that a discrete Al 2 O 3 shell was not formed under the selected growth conditions and that the Al diffused into the bulk LiCoO 2 . The resulting active oxide material, which was significantly thicker than the nominally ALD growth rate would predict, is proposed to be of the form LiCoO 2 :Al with amorphous and crystalline regions depending on the Al content. The cells consisting of the modified electrodes were found to have good cycling stability and discharge capacities of ∼110 mA h g -1 (0.12 mA h cm -2 ) and ∼35 mA h g -1 (0.04 mA h cm -2 ) at 50 and 100 C, respectively.
AB - Here, as with previous work, atomic layer deposition (ALD) has been used to deposit Al 2 O 3 on positive electrode active materials, LiCoO 2 , to create a protective barrier layer, suppress the high potential phase transition, and thus reduce the subsequent Co dissolution. However, in this study it was found that it also resulted in the reduction of the charge transfer resistance at the positive electrode-electrolyte interface, thus enhancing the performance of the battery. Energy-dispersive X-ray spectroscopy, in conjunction with transmission electron microscopy, shows that a discrete Al 2 O 3 shell was not formed under the selected growth conditions and that the Al diffused into the bulk LiCoO 2 . The resulting active oxide material, which was significantly thicker than the nominally ALD growth rate would predict, is proposed to be of the form LiCoO 2 :Al with amorphous and crystalline regions depending on the Al content. The cells consisting of the modified electrodes were found to have good cycling stability and discharge capacities of ∼110 mA h g -1 (0.12 mA h cm -2 ) and ∼35 mA h g -1 (0.04 mA h cm -2 ) at 50 and 100 C, respectively.
KW - Al O
KW - atomic layer deposition
KW - charge transfer
KW - high charge-discharge rate
KW - lithium ion batteries
KW - solid electrolyte interface
UR - http://www.scopus.com/inward/record.url?scp=85064599473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064599473&partnerID=8YFLogxK
U2 - 10.1021/acsaem.8b00496
DO - 10.1021/acsaem.8b00496
M3 - Article
AN - SCOPUS:85064599473
VL - 1
SP - 3277
EP - 3282
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
SN - 2574-0962
IS - 7
ER -