Size Dependent Fast Li Ion Storage Based on Size Regulated TiO₂(B) Nanosheet Electrodes with Vertical, Horizontal and Random Alignment

• YOSHIDA Tomohiro

  Materials and Chemical Engineering, Faculty of Textile Science and Technology, Shinshu University

• TAKIMOTO Daisuke

  Interdisciplinary Cluster for Cutting Edge Research, Center for Energy and Environmental Science (X-Breed), Shinshu University

• MOCHIZUKI Dai

  Materials and Chemical Engineering, Faculty of Textile Science and Technology, Shinshu University Interdisciplinary Cluster for Cutting Edge Research, Research Initiative for Supra-Materials (RISM), Shinshu University

• SUGIMOTO Wataru

  Materials and Chemical Engineering, Faculty of Textile Science and Technology, Shinshu University Interdisciplinary Cluster for Cutting Edge Research, Center for Energy and Environmental Science (X-Breed), Shinshu University Interdisciplinary Cluster for Cutting Edge Research, Research Initiative for Supra-Materials (RISM), Shinshu University

抄録

TiO₂(B) has a high theoretical capacity of 335 mAh g⁻¹ for Li⁺ intercalation and thus has been considered as a candidate for lithium-ion capacitor and Li-ion battery negative electrodes. For high rate lithium storage, i.e. high power density, it is important to shorten the Li⁺ diffusion path by using nanostructured TiO₂(B). In this work, TiO₂(B) nanosheet with different equivalent diameter of 300 nm and 30 nm were prepared. In addition, the orientation of the TiO₂(B) nanosheets was manipulated by altering the deposition method and drying process. Smaller size TiO₂(B) nanosheets had better Li⁺ intercalation ability compared to larger sized TiO₂(B) nanosheets. The effect of alignment of the TiO₂(B) nanosheets was evident for small-sized TiO₂(B) nanosheets; vertical or random alignment of small-sized TiO₂(B) afforded higher capacity compared to horizontally oriented nanosheets.

収録刊行物

• Electrochemistry

  Electrochemistry 88 (4), 305-309, 2020-07-05

  公益社団法人　電気化学会

キーワード

• TiO₂
• Nanosheet
• Lithium Ion Intercalation

詳細情報

• CRID: 1390285300172679680
• NII論文ID: 130007869354
• DOI: 10.5796/electrochemistry.20-00055
• ISSN: 21862451
• ISSN: 13443542
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/88/4/88_20-00055/_pdf
• 本文言語コード: en
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