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Izumi Nakai
Researcher at Tokyo University of Science
Publications - 243
Citations - 7707
Izumi Nakai is an academic researcher from Tokyo University of Science. The author has contributed to research in topics: Crystal structure & X-ray absorption fine structure. The author has an hindex of 41, co-authored 234 publications receiving 6948 citations. Previous affiliations of Izumi Nakai include University of Education, Winneba & Lucideon.
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Detailed Studies of a High-Capacity Electrode Material for Rechargeable Batteries, Li2MnO3−LiCo1/3Ni1/3Mn1/3O2
TL;DR: Electrochemical oxidation/reduction data show that simultaneous oxygen and lithium removal at the voltage plateau upon initial charge causes the structural rearrangement, including a cation migration process from metal to lithium layers, which is consistent with the mechanism proposed in the literature related to the Li-excess manganese layered oxides.
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Study on the Reversible Electrode Reaction of Na1–xNi0.5Mn0.5O2 for a Rechargeable Sodium-Ion Battery
TL;DR: Layered NaNi(0.5)Mn(0.)5)O(2) (space group: R ̅3m), having an O3-type (α-NaFeO( 2) type) structure according to the Delmas' notation, is prepared by a solid-state method and electrochemical reactivity is examined.
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Do all freshwater eels migrate
TL;DR: It is shown that Atlantic and Pacific eels collected in the ocean have spent their entire lifetime there and have never migrated into fresh water, indicating that freshwater eels need not be catadromous, and that populations from the sea contribute primarily to future recruitment.
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Synthesis and electrode performance of carbon coated Na2FePO4F for rechargeable Na batteries
Yoshiteru Kawabe,Naoaki Yabuuchi,Masataka Kajiyama,Norihito Fukuhara,Tokuo Inamasu,Ryoichi Okuyama,Izumi Nakai,Shinichi Komaba +7 more
TL;DR: In this article, a carbon-coated Na2FePO4F was synthesized by a simple solid-state method with ascorbic acid as carbon source, which achieved an initial discharge capacity of 110 mAh g-1 at a rate of 1/20 C (6.2
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Electrochemically Reversible Sodium Intercalation of Layered NaNi0.5Mn0.5O2 and NaCrO2
Shinichi Komaba,Tetsuri Nakayama,Atsushi Ogata,Takaya Shimizu,Chikara Takei,Saori Takada,Akiko Hokura,Izumi Nakai +7 more
TL;DR: In this article, Li and NaNi0.5Mn 0.5O2 and NaCrO2 electrodes were investigated in 1 mol dm-3 NaClO4 propylene carbonate at room temperature.