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1. WO2020115953 - HYDROGEN STORAGE MATERIAL, NEGATIVE ELECTRODE AND NICKEL HYDROGEN SECONDARY BATTERY

Publication Number WO/2020/115953
Publication Date 11.06.2020
International Application No. PCT/JP2019/031990
International Filing Date 14.08.2019
IPC
C22C 19/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
B22F 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B22F 1/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
02comprising coating of the powder
H01M 4/38 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
38of elements or alloys
Applicants
  • 株式会社三徳 SANTOKU CORPORATION [JP]/[JP]
Inventors
  • 大月 孝之 OTSUKI, Takayuki
Agents
  • フェリシテ特許業務法人 FELICITE PATENT PROFESSIONAL CORPORATION
Priority Data
2018-23886204.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HYDROGEN STORAGE MATERIAL, NEGATIVE ELECTRODE AND NICKEL HYDROGEN SECONDARY BATTERY
(FR) MATÉRIAU DE STOCKAGE D'HYDROGÈNE, ÉLECTRODE NÉGATIVE ET BATTERIE SECONDAIRE AU NICKEL-HYDROGÈNE
(JA) 水素吸蔵材、負極、及びニッケル水素二次電池
Abstract
(EN)
The present invention provides: a hydrogen storage material which is capable of improving the discharge characteristics of a nickel hydrogen secondary battery at low temperatures; and a negative electrode and a nickel hydrogen secondary battery, each of which uses this hydrogen storage material. This hydrogen storage material has a specific composition, while containing hydrogen storage alloy particles and a surface modification substance that adheres to the surfaces of the particles. With respect to the X-ray diffraction pattern of this hydrogen storage material, if the relative intensity of the maximum peak Pmax among the diffraction peaks in the range of 2θ = 42.00° to 44.00° is taken as 100.00%, the relative intensity of the maximum peak P1 in the range of 2θ = 30.35° to 30.65° is from 4.00% to 70.00% (inclusive), the relative intensity of the maximum peak P2 in the range of 2θ = 32.85° to 33.15° is less than 60.00%, and the relative intensity of the maximum peak P3 in the range of 2θ = 51.65° to 51.95° is less than 6.00%.
(FR)
La présente invention concerne : un matériau de stockage d'hydrogène qui est capable d'améliorer les caractéristiques de décharge d'une batterie secondaire au nickel-hydrogène à basse température; et une électrode négative et une batterie secondaire au nickel-hydrogène, chacune utilisant ce matériau de stockage d'hydrogène. Le matériau de stockage d'hydrogène de l'invention présente une composition spécifique, tout en contenant des particules d'alliage de stockage d'hydrogène et une substance de modification de surface qui adhère aux surfaces des particules. En ce qui concerne le profil de diffraction X de ce matériau de stockage d'hydrogène, si l'on prend à 100,00 % l'intensité relative du pic maximal Pmax parmi les pics de diffraction situés entre les valeurs 2θ allant de 42,00° à 44,00°, l'intensité relative du pic maximal P1 dans la plage de 2θ allant de 30,35° à 30,65° est de 4,00 % à 70,00 % (inclus), l'intensité relative du pic maximal P2 dans la plage de 2θ allant de 32,85° à 33,15° est inférieure à 60,00 % et l'intensité relative du pic maximal P3 dans la plage de 2θ allant de 51,65° à 51,95° est inférieure à 6,00 %.
(JA)
ニッケル水素二次電池の低温での放電特性を改善できる水素吸蔵材、並びにこの水素吸蔵材を用いた負極及びニッケル水素二次電池を提供する。この水素吸蔵材は水素吸蔵合金粒子と該粒子の表面に付着した表面修飾物質とを含み、特定の組成を有する。この水素吸蔵材のX線回折パターンにおいて、2θ=42.00°~44.00°の範囲に現れる回折ピークのうち最大ピークPmax の相対強度を100.00%としたとき、2θ=30.35°~30.65°の範囲に現れる最大ピークP1 の相対強度が4.00%以上70.00%以下であり、2θ=32.85°~33.15°の範囲に現れる最大ピークP2 の相対強度が60.00%未満であり、且つ2θ=51.65°~51.95°の範囲に現れる最大ピークP3 の相対強度が6.00%未満である。
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