Scimago Journal & Country Rank

International Journal of Hydrogen Energy

Country United Kingdom  - SIR icon SIR Ranking of United Kingdom
H Index
Subject Area and CategoryEnergy
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment

Physics and Astronomy
Condensed Matter Physics
PublisherElsevier Ltd.
Publication typeJournals
Scope The International Journal of Hydrogen Energy provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic ideas in the field of hydrogen energy. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of hydrogen energy, including production, storage, transmission, utilization, as well as the economical, environmental and international aspects. When outstanding new advances are made, or when new areas have been developed to a definitive stage, special review articles will be considered. To encourage the exchange of ideas, a section of the journal is devoted to discussing previously published papers.


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The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Condensed Matter Physics1999Q3
Condensed Matter Physics2000Q3
Condensed Matter Physics2001Q3
Condensed Matter Physics2002Q2
Condensed Matter Physics2003Q2
Condensed Matter Physics2004Q1
Condensed Matter Physics2005Q1
Condensed Matter Physics2006Q1
Condensed Matter Physics2007Q1
Condensed Matter Physics2008Q1
Condensed Matter Physics2009Q1
Condensed Matter Physics2010Q1
Condensed Matter Physics2011Q1
Condensed Matter Physics2012Q1
Condensed Matter Physics2013Q1
Condensed Matter Physics2014Q1
Condensed Matter Physics2015Q1
Condensed Matter Physics2016Q1
Condensed Matter Physics2017Q1
Energy Engineering and Power Technology1999Q1
Energy Engineering and Power Technology2000Q1
Energy Engineering and Power Technology2001Q1
Energy Engineering and Power Technology2002Q1
Energy Engineering and Power Technology2003Q1
Energy Engineering and Power Technology2004Q1
Energy Engineering and Power Technology2005Q1
Energy Engineering and Power Technology2006Q1
Energy Engineering and Power Technology2007Q1
Energy Engineering and Power Technology2008Q1
Energy Engineering and Power Technology2009Q1
Energy Engineering and Power Technology2010Q1
Energy Engineering and Power Technology2011Q1
Energy Engineering and Power Technology2012Q1
Energy Engineering and Power Technology2013Q1
Energy Engineering and Power Technology2014Q1
Energy Engineering and Power Technology2015Q1
Energy Engineering and Power Technology2016Q1
Energy Engineering and Power Technology2017Q1
Fuel Technology1999Q1
Fuel Technology2000Q1
Fuel Technology2001Q1
Fuel Technology2002Q1
Fuel Technology2003Q1
Fuel Technology2004Q1
Fuel Technology2005Q1
Fuel Technology2006Q1
Fuel Technology2007Q1
Fuel Technology2008Q1
Fuel Technology2009Q1
Fuel Technology2010Q1
Fuel Technology2011Q1
Fuel Technology2012Q1
Fuel Technology2013Q1
Fuel Technology2014Q1
Fuel Technology2015Q1
Fuel Technology2016Q1
Fuel Technology2017Q1
Renewable Energy, Sustainability and the Environment1999Q2
Renewable Energy, Sustainability and the Environment2000Q2
Renewable Energy, Sustainability and the Environment2001Q2
Renewable Energy, Sustainability and the Environment2002Q1
Renewable Energy, Sustainability and the Environment2003Q1
Renewable Energy, Sustainability and the Environment2004Q1
Renewable Energy, Sustainability and the Environment2005Q1
Renewable Energy, Sustainability and the Environment2006Q1
Renewable Energy, Sustainability and the Environment2007Q1
Renewable Energy, Sustainability and the Environment2008Q1
Renewable Energy, Sustainability and the Environment2009Q1
Renewable Energy, Sustainability and the Environment2010Q1
Renewable Energy, Sustainability and the Environment2011Q1
Renewable Energy, Sustainability and the Environment2012Q1
Renewable Energy, Sustainability and the Environment2013Q1
Renewable Energy, Sustainability and the Environment2014Q1
Renewable Energy, Sustainability and the Environment2015Q1
Renewable Energy, Sustainability and the Environment2016Q1
Renewable Energy, Sustainability and the Environment2017Q2

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19990.511
Cites / Doc. (4 years)20000.643
Cites / Doc. (4 years)20010.910
Cites / Doc. (4 years)20021.358
Cites / Doc. (4 years)20031.366
Cites / Doc. (4 years)20042.252
Cites / Doc. (4 years)20052.699
Cites / Doc. (4 years)20063.552
Cites / Doc. (4 years)20073.621
Cites / Doc. (4 years)20084.588
Cites / Doc. (4 years)20094.764
Cites / Doc. (4 years)20105.039
Cites / Doc. (4 years)20115.013
Cites / Doc. (4 years)20124.584
Cites / Doc. (4 years)20134.014
Cites / Doc. (4 years)20144.019
Cites / Doc. (4 years)20153.736
Cites / Doc. (4 years)20164.006
Cites / Doc. (4 years)20174.200
Cites / Doc. (3 years)19990.511
Cites / Doc. (3 years)20000.660
Cites / Doc. (3 years)20011.044
Cites / Doc. (3 years)20021.437
Cites / Doc. (3 years)20031.476
Cites / Doc. (3 years)20042.349
Cites / Doc. (3 years)20052.683
Cites / Doc. (3 years)20063.414
Cites / Doc. (3 years)20073.571
Cites / Doc. (3 years)20084.261
Cites / Doc. (3 years)20094.592
Cites / Doc. (3 years)20104.949
Cites / Doc. (3 years)20114.846
Cites / Doc. (3 years)20124.410
Cites / Doc. (3 years)20133.763
Cites / Doc. (3 years)20143.845
Cites / Doc. (3 years)20153.693
Cites / Doc. (3 years)20163.984
Cites / Doc. (3 years)20174.153
Cites / Doc. (2 years)19990.540
Cites / Doc. (2 years)20000.702
Cites / Doc. (2 years)20011.038
Cites / Doc. (2 years)20021.663
Cites / Doc. (2 years)20031.452
Cites / Doc. (2 years)20042.266
Cites / Doc. (2 years)20052.497
Cites / Doc. (2 years)20063.370
Cites / Doc. (2 years)20073.119
Cites / Doc. (2 years)20083.942
Cites / Doc. (2 years)20094.343
Cites / Doc. (2 years)20104.673
Cites / Doc. (2 years)20114.588
Cites / Doc. (2 years)20123.984
Cites / Doc. (2 years)20133.426
Cites / Doc. (2 years)20143.726
Cites / Doc. (2 years)20153.521
Cites / Doc. (2 years)20163.859
Cites / Doc. (2 years)20174.127
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites199950
Self Cites200069
Self Cites2001131
Self Cites2002208
Self Cites2003100
Self Cites2004180
Self Cites2005150
Self Cites2006218
Self Cites2007524
Self Cites20081632
Self Cites20093698
Self Cites20105470
Self Cites20116887
Self Cites20127258
Self Cites20135294
Self Cites20145783
Self Cites20155020
Self Cites20166717
Self Cites20179300
Total Cites1999216
Total Cites2000276
Total Cites2001426
Total Cites2002602
Total Cites2003673
Total Cites20041118
Total Cites20051355
Total Cites20061697
Total Cites20072239
Total Cites20084551
Total Cites20098288
Total Cites201013091
Total Cites201117480
Total Cites201219698
Total Cites201320616
Total Cites201422001
Total Cites201523291
Total Cites201623723
Total Cites201727353
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document19990.392
External Cites per document20000.495
External Cites per document20010.723
External Cites per document20020.940
External Cites per document20031.257
External Cites per document20041.971
External Cites per document20052.386
External Cites per document20062.976
External Cites per document20072.735
External Cites per document20082.733
External Cites per document20092.543
External Cites per document20102.881
External Cites per document20112.937
External Cites per document20122.785
External Cites per document20132.796
External Cites per document20142.834
External Cites per document20152.897
External Cites per document20162.856
External Cites per document20172.741
Cites per document19990.511
Cites per document20000.660
Cites per document20011.044
Cites per document20021.437
Cites per document20031.476
Cites per document20042.349
Cites per document20052.683
Cites per document20063.414
Cites per document20073.571
Cites per document20084.261
Cites per document20094.592
Cites per document20104.949
Cites per document20114.846
Cites per document20124.410
Cites per document20133.763
Cites per document20143.845
Cites per document20153.693
Cites per document20163.984
Cites per document20174.153
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents19992
Non-citable documents20001
Non-citable documents20011
Non-citable documents20025
Non-citable documents200312
Non-citable documents200419
Non-citable documents200523
Non-citable documents200618
Non-citable documents200716
Non-citable documents200813
Non-citable documents200925
Non-citable documents201038
Non-citable documents201152
Non-citable documents201265
Non-citable documents201393
Non-citable documents2014105
Non-citable documents2015124
Non-citable documents2016111
Non-citable documents2017119
Citable documents1999423
Citable documents2000418
Citable documents2001408
Citable documents2002419
Citable documents2003456
Citable documents2004476
Citable documents2005505
Citable documents2006497
Citable documents2007627
Citable documents20081068
Citable documents20091805
Citable documents20102645
Citable documents20113607
Citable documents20124467
Citable documents20135479
Citable documents20145722
Citable documents20156306
Citable documents20165955
Citable documents20176586
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents1999294
Uncited documents2000252
Uncited documents2001219
Uncited documents2002215
Uncited documents2003230
Uncited documents2004183
Uncited documents2005157
Uncited documents2006136
Uncited documents2007167
Uncited documents2008207
Uncited documents2009232
Uncited documents2010303
Uncited documents2011399
Uncited documents2012546
Uncited documents2013834
Uncited documents2014845
Uncited documents2015942
Uncited documents2016837
Uncited documents2017934
Cited documents1999131
Cited documents2000167
Cited documents2001190
Cited documents2002209
Cited documents2003238
Cited documents2004312
Cited documents2005371
Cited documents2006379
Cited documents2007476
Cited documents2008874
Cited documents20091598
Cited documents20102380
Cited documents20113260
Cited documents20123986
Cited documents20134738
Cited documents20144982
Cited documents20155488
Cited documents20165229
Cited documents20175771
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