Preparation of LiNiO2 Using Fluorine-modified NiO and Its Charge-discharge Properties

Material type: 文書・図像類

Author: Hata, Mikioほか

Publisher: The Electrochemical Society of Japan

Publication date: 2021-02-05

Material Format: Digital

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Note (General)：: A Ni(OH)2 surface was fluorinated at 25 °C using F2 gas for 1 h under absolute pressure of 6.67 kPa. Some fluorides and oxyfluorides were detected onl...

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Material Type: 文書・図像類
Title: Preparation of LiNiO2 Using Fluorine-modified NiO and Its Charge-discharge Properties
Author/Editor: Hata, Mikio
Tanaka, Takaaki
Kato, Daichi
Kim, Jae-Ho
Yonezawa, Susumu
Author Heading: Hata, Mikio
Tanaka, Takaaki
Kato, Daichi
Kim, Jae-Ho
Yonezawa, Susumu
Publication, Distribution, etc.: The Electrochemical Society of Japan
Publication Date: 2021-02-05
Publication Date (W3CDTF): 2021-02-05
Alternative Title: Preparation of LiNiO2 Using Fluorine-modified NiO and Its Charge-discharge Properties
Periodical title: Electrochemistry
No. or year of volume/issue: 89 3
Volume: 89
Issue: 3
Pages: 223-229
Text Language Code: eng
Subject Heading: F2 Gas
LiNiO2
Ni(OH)2
Surface Fluorination
Target Audience: 一般
Note (General): A Ni(OH)2 surface was fluorinated at 25 °C using F2 gas for 1 h under absolute pressure of 6.67 kPa. Some fluorides and oxyfluorides were detected only on the Ni(OH)2 particle surface, although most Ni(OH)2 remained inside of the particles. Fluorine-introduced NiO (NiO(F)) was obtained by heating the surface-fluorinated Ni(OH)2. After sintering at 750 °C for 6 h, the NiO(F) crystal size and surface area were, respectively, 0.6 times smaller and 4.7 times larger than those of NiO obtained from untreated Ni(OH)2. LiNiO2 samples were prepared via reaction between NiO(F) and Li2CO3 at 700 °C for 20 h and 30 h, respectively (LiNiO2 (20 h, F) and LiNiO2 (30 h, F)). The density of LiNiO2 (30 h, F) was 4.697, which was larger than the 4.556 of LiNiO2 prepared from NiO and Li2CO3 under the same conditions. The discharge capacity of LiNiO2 (30 h, F) was 202 mAh g−1, whereas the LiNiO2 prepared under the same condition from NiO and Li2CO3 was 172 mAh g−1. The discharge capacity of LiNiO2 as a cathode of LIB might be improved by introducing fluorine to its preparation process between NiO and Li2CO3.
source:https://www.jstage.jst.go.jp/article/electrochemistry/89/3/89_20-65151/_article
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=29384&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=29384&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Rights (production): cc-by
CC BY
Related Material (DOI): 10.5796/electrochemistry.20-65151
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ