• Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Fujio Izumi, Ruben A. Dilanian, Takayoshi Sasaki,
  “A New Superconducting Phase of Sodium Cobalt Oxide”,
  Adv. Mater., 16, 1901-1905 (2004).
• Hiroya Sakurai, Kazunori Takada, Fujio Izumi, Ruben A. Dilanian, Takayoshi Sasaki, Eiji Takayama-Muromachi,
  “The Role of the Water Molecules in Novel Superconductor, Na_0.35CoO₂·1.3H₂O”,
  Physica C, 412-414, 182-186 (2004).
• Hiroaki Wada, Kazunori Takada, Takayoshi Sasaki,
  “DSC Studies on Reactions of the Elements with Sulfur”,
  Solid State Ionics, 172, 421-424 (2004).
• Hiroaki Wada, Hiroshi Nozaki, Akira Sato, Kazunori Takada, Takayoshi Sasaki,
  “Synthesis, Crystal Structure and Property of the Iron-Rich Tantalum Compounds (Fe,Ta)₅X₈ with X = S, Se”,
  J. Alloys Compd., 383, 148-151 (2004).
• Hisako Sato, Yoshihisa Hiroe, Takayoshi Sasaki, Kanta Ono, Akihiko Yamagishi,
  “Electric Dichroism Studies on an Aqueous Dispersion of Unilamellar Titanium Oxides: Optical Anisotropy near the Absorption Edge”,
  J. Phys. Chem. B, 108, 17306-17312 (2004).
• Hao Xin, Renzhi Ma, Lianzhou Wang, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki,
  “Photoluminescence Properties of Lamellar Aggregates of Titania Nanosheets Accommodating Rare Earth Ions”,
  Appl. Phys. Lett., 85, 4187-4189 (2004).
• Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Fujio Izumi, Ruben A. Dilanian, Takayoshi Sasaki,
  “Influences of Interlayer Distance and Cobalt Oxidation State on Superconductivity of Na_xCoO₂”,
  Physica C, 412-414, 14-20 (2004).
• Kazunori Takada, Taro Inada, Akihisa Kajiyama, Masaru Kouguchi, Hideki Sasaki, Shigeo Kondo, Yuichi Michiue, Satoshi Nakano, Mitsuharu Tabuchi, Mamoru Watanabe,
  “Solid State Batteries with Sulfide-Based Solid Electrolytes”,
  Solid State Ionics, 172, 25-30 (2004).
• Wataru Higemoto, Kazuki Ohishi, Akihiro Koda, Shanta Ranjan Saha, Ryosuke Kadono, Kenji Ishida, Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Takayoshi Sasaki,
  “Possible Unconventional Superconductivity in Na_xCoO₂·yH₂O Probed by Muon Spin Rotation and Relaxation”,
  Phys. Rev. B, 70, 134508 (2004).
• Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Fujio Izumi, Ruben A. Dilanian, Takayoshi Sasaki,
  “Superconductivity of a Hydrous Sodium Cobalt Oxide”,
  Physica C, 408-410, 165-168 (2004).
• Hiroya Sakurai, Kazunori Takada, Takayoshi Sasaki, Fujio Izumi, Ruben A. Dilanian, Eiji Takayama-Muromachi,
  “Correlation between T_c and Lattice Parameters of Novel Superconducting Sodium Co Oxide Hydrate”,
  J. Phys. Soc. Jpn, 73, 2590-2591 (2004).
• Lianqi Zhang, Kazunori Takada, Narumi Ohta, Lianzhou Wang, Takayoshi Sasaki, Mamoru Watanabe,
  “Synthesis and Electrochemistry of Layered 0.6LiNi_0.5Mn_0.5O₂·xLi₂MnO₃·yLiCoO₂ (x+y=0.4) Cathode Materials”,
  Mater. Lett., 58, 3197-3200 (2004).
• Lianzhou Wang, Yasuo Ebina, Kazunori Takada, Keiji Kurashima, Takayoshi Sasaki,
  “A New Mesoporous Manganese Oxide Pillared with Double Layers of Alumina”,
  Adv. Mater., 16, 1412-1416 (2004).
• Katsutoshi Fukuda, Izumi Nakai, Chizuru Oishi, Masaharu Nomura, Masaru Harada, Yasuo Ebina, Takayoshi Sasaki,
  “Nanoarchitecture of Semiconductor Titania Nanosheets Revealed by Polarization-Dependent Total Reflection Fluorescence X-ray Absorption Fine Structure”,
  J. Phys. Chem. B, 108, 13088-13092 (2004).
• Renzhi Ma, Takayoshi Sasaki, Yoshio Bando,
  “Layer-by-layer Assembled Multilayer Films of Titanate Nanotubes, Ag- or Au-Loaded Nanotubes, and Nanotubes/Nanosheets with Polycations”,
  J. Am. Chem. Soc., 126, 10382-10388 (2004).
• Yoshihiko Ihara, Kenji Ishida, Chishiro Michioka, Masaki Kato, Kazuyoshi Yoshimura, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, Eiji Takayama-Muromachi,
  “Correlation between Superconducting Transition Temperature T_c and Increase of Nuclear Spin-Lattice Relaxation Rate Devided by Temperature 1/T₁T at T_c in the Hydrate Cobaltate Na_xCoO₂·yH₂O”,
  J. Phys. Soc. Jpn., 73, 2069-2072 (2004).
• Masato Kubota, Kazunori Takada, Takayoshi Sasaki, Hiroshi Kumigashira, Jun Okabayashi, Masaharu Oshima, Motohiro Suzuki, Naomi Kawamura, Masafumi Takagaki, Katsutoshi Fukuda, Kanta Ono,
  “Photoemission and X-ray Absorption Study of the Two-dimensional Triangular Lattice Superconductor Na_0.35CoO₂·1.3H₂O ”,
  Phys. Rev. B, 70, 012508 (2004).
• Renzhi Ma, Yoshio Bando, Lianqi Zhang, Takayoshi Sasaki,
  “Layered MnO₂ Nanobelts: Hydrothermal Synthesis and the Electrochemical Measurements”,
  Adv. Mater., 16, 918-922 (2004).
• Tomohiro Tanaka, Katsutoshi Fukuda, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki,
  “Highly Organized Self-assembled Monolayer and Multilayer Films of Titania Nanosheets”,
  Adv. Mater., 16, 872-875 (2004).
• Lianqi Zhang, Xiaoqing Wang, Hideyuki Noguchi, Masaki Yoshio, Kazunori Takada, Takayoshi Sasaki,
  “Electrochemical and Ex Situ XRD Investigations on (1-x)LiNiO₂·xLi₂TiO₃ (0.05 ≤ x ≤ 0.5)”,
  Electrochim. Acta, 49, 3305-3311 (2004).
• Ashish Chainani, Takayoshi Yokoya, Yasutaka Takata, Kenji Tamasaku, Munetaka Taguchi, Takahiro Shimojima, Nozomu Kamakura, Koji Horiba, Shunsuke Tsuda, Shik Shin, Daigo Miwa, Yoshinori Nishino, Tetsuya Ishikawa, Makina Yabashi, Keisuke Kobayashi, Hirofumi Namatame, Masaki Taniguchi, Kazunori Takada, Takayoshi Sasaki, Hiroya Sakurai, Eiji Takayama-Muromachi,
  “Bulk Electronic Structure of Na_0.35CoO₂·1.3H₂O”,
  Phys. Rev. B, 69, 180508 (2004).
• Nobuyuki Sakai, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki,
  “Electronic Band Structure for Titania Semiconductor Nanosheets Revealed by Electrochemical and Photoelectrochemical Studies”,
  J. Am. Chem. Soc., 126, 5851-5858 (2004).
• Kazunori Takada, Katsutoshi Fukuda, Minoru Osada, Izumi Nakai, Fujio Izumi, Ruben A. Dilanian, Kenichi Kato, Masaki Takata, Hiroya Sakurai, Eiji Takayama-Muromachi, Takayoshi Sasaki,
  “Chemical Composition and Crystal Structure of Superconducting Sodium Cobalt Oxide Bilayer-hydrate”,
  J. Mater. Chem., 14, 1448-1453 (2004).
• Lianzhou Wang, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki,
  “Ultrathin Hollow Nanoshells of Manganese Oxide”,
  Chem. Commun., 1074-1075 (2004).
• Sun-Chan Jeong, Ichiro Katayama, Hirokane Kawakami, Hironobu Ishiyama, Hiroari Miyatake, Masao Sataka, Akihiro Iwase, Satosi Okayasu, Hiroyuki Sugai, Shinichi Ichikawa, Katsuhisa Nishio, Yasuharu Sugiyama, Masahito Yahagi, Kazunori Takada, Mamoru Watanabe,
  “Simulation of Radiotracer Method for Diffusion Studies Using Short-lived Radioactive Nuclear Beams”,
  Nucl. Instrum. Methods Phys. Res. B, 212, 483-488 (2003).
• Lianzhou Wang, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki,
  “Ultrathin Films and Hollow Shells with Pillared Architectures Fabricated via Layer-by-Layer Self-assembly of Titania Nanosheets and Aluminum Keggin Ions”,
  J. Phys. Chem. B, 108, 4283-4288 (2004).
• Renzhi Ma, Yoshio Bando, Takayoshi Sasaki,
  “Direct Rolling Nanosheets into Nanotubes”,
  J. Phys. Chem. B, 108, 2115-2119 (2004).
• P. Lemmens, V. Gnezdilov, N. N. Kovaleva, K. Y. Choi, H. Sakurai, E. Takayama-Muromachi, K. Takada, T. Sasaki, F. C. Chou, D. P. Chen, C. T. Lin, B. Keimer,
  “Effect of Na Content and Hydration on the Excitation Spectrum of the Cobaltite Na_xCoO₂·yH₂O”,
  J. Phys.: Condens. Matter, 16, S857-S865 (2004).
• Kazunori Takada, Kenjiro Fujimoto, Takayoshi Sasaki, Mamoru Watanabe,
  “Combinatorial Electrode Array for High-throughput Evaluation of Combinatorial Library for Electrode Materials”,
  Appl. Surf. Sci., 223, 210-213 (2004).
• Kenjiro Fujimoto, Kazunori Takada, Takayoshi Sasaki, Mamoru Watanabe,
  “Combinatorial Approach for Powder Preparation of Pseudo-ternary System LiO_0.5-X-TiO₂ (X: FeO_1.5, CrO_1.5 and NiO)”,
  Appl. Surf. Sci., 223, 49-53 (2004).
• Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Fujio Izumi, Ruben A. Dilanian, Takayoshi Sasaki,
  “Structural Difference Between a Superconducting Sodium Cobalt Oxide and Its Related Phase”,
  J. Solid State Chem., 177, 372-376 (2004).
• Kazunori Takada, Satoshi Nakano, Taro Inada, Akihisa Kajiyama, Masaru Kouguchi, Hideki Sasaki, Shigeo Kondo, Mamoru Watanabe Masahiro Murayama, Ryoji Kanno,
  “Solid-state Lithium Batteries with Sulfide-based Solid Electrolytes”,
  Solid State Ionics: The Science and Technology of Ions in Motion, In: B. V. R. Chowdari, H.-L. Yoo, G. M. Choi, J.-H. Lee (Eds.), World Scientific Publishing Co. Pte. Ltd., pp. 425-436 (2004).