Class information for:
Level 2: HYDROGEN STORAGE//METAL HYDRIDES//HYDROGEN STORAGE ALLOY

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
382 3       HYDROGEN STORAGE//METAL HYDRIDES//HYDROGEN STORAGE ALLOY 33830
320 2             HYDROGEN STORAGE//METAL HYDRIDES//HYDROGEN STORAGE ALLOY 18564
559 1                   MAGNESIUM HYDRIDE//HYDROGEN STORAGE//HYDROGEN STORAGE MATERIALS 3335
811 1                   HYDROGEN STORAGE ALLOY//METAL HYDRIDE ELECTRODE//NI MH BATTERY 3074
1155 1                   COMPLEX HYDRIDES//HYDROGEN STORAGE//HYDROGEN STORAGE MATERIALS 2845
5795 1                   METAL HYDRIDES//LANI5//HYDROGEN COMPRESSOR 1603
6068 1                   SUPERABUNDANT VACANCY//PD RH ALLOYS//HYDROGEN INDUCED VACANCY 1564
9780 1                   SWITCHABLE MIRROR//RARE EARTH HYDRIDES//YTTRIUM HYDRIDE 1154
11102 1                   MET HYDRIDES//THERMODYNAMICS OF DISSOLVED HYDROGEN//JOURNAL OF THE LESS-COMMON METALS 1036
12979 1                   C15 LAVES PHASE//YMN2//HYDROGEN INDUCED AMORPHIZATION 899
13924 1                   TI ZR NI ALLOY//TI ZR NI//TI ZR NI CU ALLOY 834
19973 1                   IONENSTRAHLPHYS MATERIALFOR UNG//MO V SUPERLATTICES//POROUS PALLADIUM BULK 503
20620 1                   NAMGH3//PEROVSKITE TYPE HYDRIDE//COMPLEX TRANSITION METAL HYDRIDE 476
20811 1                   BCC ALLOYS//TI CR V ALLOY//CENT RADIOISOTOPE SCI 468
26487 1                   ALUMINUM HYDRIDE//ALANE//ALH3 274
27385 1                   MODIFIED CABRERA AND MOTT C M MODEL//CANI5//GILL CHAIR CHEM 250
29822 1                   CARBOHYDRIDE//DESTRUCTIVE HYDROGENATION//ALKALI METAL BOROHYDRIDES CATALYTIC HYDROLYSIS REACTION ORDER 196
38776 1                   DISPROPORTIONATION RECOMBINATION//GV KURDYUMOV MET SCI PHYS MET//HYDROGEN BASED TECHNOLOGIES 53

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 HYDROGEN STORAGE authKW 1643837 11% 49% 1976
2 METAL HYDRIDES authKW 1548968 6% 77% 1182
3 HYDROGEN STORAGE ALLOY authKW 1355538 5% 93% 859
4 HYDROGEN STORAGE MATERIALS authKW 1291713 5% 86% 888
5 HYDROGEN ABSORBING MATERIALS authKW 709206 3% 81% 515
6 MAGNESIUM HYDRIDE authKW 542318 2% 91% 350
7 JOURNAL OF ALLOYS AND COMPOUNDS journal 436611 18% 8% 3311
8 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY journal 421351 12% 11% 2315
9 METAL HYDRIDE ELECTRODE authKW 383676 1% 97% 234
10 COMPLEX HYDRIDES authKW 358162 1% 97% 218

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Metallurgy & Metallurgical Engineering 148627 30% 2% 5605
2 Chemistry, Physical 103472 50% 1% 9211
3 Electrochemistry 82440 18% 2% 3408
4 Materials Science, Multidisciplinary 60772 41% 1% 7637
5 Energy & Fuels 41503 16% 1% 2977
6 Physics, Condensed Matter 7687 13% 0% 2329
7 Nanoscience & Nanotechnology 2756 5% 0% 964
8 Chemistry, Inorganic & Nuclear 774 3% 0% 627
9 Materials Science, Coatings & Films 679 2% 0% 345
10 Physics, Applied 606 7% 0% 1295

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INTEGRATED EXPLOITAT BAIYUN OBO MULTIMET 89875 0% 100% 53
2 CHIM MET TER RA 76863 0% 53% 86
3 ENERGY CONVERS DEVICES INC 44090 0% 100% 26
4 NEW ENERGY MAT CHEM 37152 1% 18% 124
5 ADV MAT PLICAT BATTERIES ZHEJIANG PRO 33027 0% 22% 89
6 RECH HYDROGENE 33012 0% 37% 53
7 MERLIN GRP 32825 0% 88% 22
8 ENERGY MAT TECHNOL 31421 0% 40% 46
9 ENVIRONM ENERGY MOBIL 29147 0% 90% 19
10 HYDROGEN ENERGY 27730 0% 21% 77

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF ALLOYS AND COMPOUNDS 436611 18% 8% 3311
2 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 421351 12% 11% 2315
3 JOURNAL OF THE LESS-COMMON METALS 258823 4% 19% 817
4 ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE NEUE FOLGE 71836 1% 21% 204
5 RARE METAL MATERIALS AND ENGINEERING 18341 2% 3% 376
6 ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS 13392 1% 6% 146
7 JOURNAL OF PHYSICAL CHEMISTRY C 11909 3% 2% 501
8 JOURNAL OF POWER SOURCES 7689 2% 1% 339
9 MATERIALS TRANSACTIONS 6709 1% 2% 174
10 JOURNAL OF PHYSICS F-METAL PHYSICS 5934 0% 4% 85

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 HYDROGEN STORAGE 1643837 11% 49% 1976 Search HYDROGEN+STORAGE Search HYDROGEN+STORAGE
2 METAL HYDRIDES 1548968 6% 77% 1182 Search METAL+HYDRIDES Search METAL+HYDRIDES
3 HYDROGEN STORAGE ALLOY 1355538 5% 93% 859 Search HYDROGEN+STORAGE+ALLOY Search HYDROGEN+STORAGE+ALLOY
4 HYDROGEN STORAGE MATERIALS 1291713 5% 86% 888 Search HYDROGEN+STORAGE+MATERIALS Search HYDROGEN+STORAGE+MATERIALS
5 HYDROGEN ABSORBING MATERIALS 709206 3% 81% 515 Search HYDROGEN+ABSORBING+MATERIALS Search HYDROGEN+ABSORBING+MATERIALS
6 MAGNESIUM HYDRIDE 542318 2% 91% 350 Search MAGNESIUM+HYDRIDE Search MAGNESIUM+HYDRIDE
7 METAL HYDRIDE ELECTRODE 383676 1% 97% 234 Search METAL+HYDRIDE+ELECTRODE Search METAL+HYDRIDE+ELECTRODE
8 COMPLEX HYDRIDES 358162 1% 97% 218 Search COMPLEX+HYDRIDES Search COMPLEX+HYDRIDES
9 NI MH BATTERY 287673 1% 74% 229 Search NI+MH+BATTERY Search NI+MH+BATTERY
10 HYDRIDES 270379 3% 30% 539 Search HYDRIDES Search HYDRIDES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 2


rank cluster_id2 link
1 2572 AMMONIA BORANE//HYDROGEN GENERATION//SODIUM BOROHYDRIDE
2 4146 ELE OCHEM HYDROGEN ENERGY//NOVOSHAKHTINSK BRANCH//PALLADIUM PLATE
3 3584 COLD FUSION//FUSION TECHNOLOGY//PIEZONUCLEAR REACTIONS
4 2114 HYPERFINE INTERACTIONS//MUONIUM//PERTURBED ANGULAR CORRELATION
5 2565 TRITIUM//FUSION SCIENCE AND TECHNOLOGY//FUSION TECHNOLOGY
6 2536 HYDROGEN EMBRITTLEMENT//DELAYED FRACTURE//HYDROGEN INDUCED CRACKING
7 3884 ROCHOW REACTION//METHYLCHLOROSILANE//WERKSTOFFWISSEN 4
8 2647 MECHANICAL ALLOYING//MECHANOCHEMISTRY//BALL MILLING
9 3233 LEHRSTUHL ANORGAN FESTKORPERCHEM//NITRIDOSILICATES//NITRIDOBORATES
10 1613 MAGNETOCALORIC EFFECT//MAGNETIC REFRIGERATION//MAGNETIC ENTROPY CHANGE

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