Scimago Journal & Country Rank

International Journal of Hydrogen Energy

CountryUnited 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
PublisherPergamon Press 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. (source)

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 Physics2000Q2
Condensed Matter Physics2001Q3
Condensed Matter Physics2002Q2
Condensed Matter Physics2003Q1
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
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
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
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

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)19990.508
Cites / Doc. (4 years)20000.639
Cites / Doc. (4 years)20010.893
Cites / Doc. (4 years)20021.362
Cites / Doc. (4 years)20031.359
Cites / Doc. (4 years)20042.228
Cites / Doc. (4 years)20052.655
Cites / Doc. (4 years)20063.521
Cites / Doc. (4 years)20073.572
Cites / Doc. (4 years)20084.557
Cites / Doc. (4 years)20094.728
Cites / Doc. (4 years)20105.001
Cites / Doc. (4 years)20114.985
Cites / Doc. (4 years)20124.542
Cites / Doc. (4 years)20133.960
Cites / Doc. (4 years)20143.933
Cites / Doc. (4 years)20153.486
Cites / Doc. (3 years)19990.508
Cites / Doc. (3 years)20000.656
Cites / Doc. (3 years)20011.025
Cites / Doc. (3 years)20021.442
Cites / Doc. (3 years)20031.467
Cites / Doc. (3 years)20042.319
Cites / Doc. (3 years)20052.636
Cites / Doc. (3 years)20063.384
Cites / Doc. (3 years)20073.526
Cites / Doc. (3 years)20084.231
Cites / Doc. (3 years)20094.559
Cites / Doc. (3 years)20104.912
Cites / Doc. (3 years)20114.818
Cites / Doc. (3 years)20124.372
Cites / Doc. (3 years)20133.711
Cites / Doc. (3 years)20143.761
Cites / Doc. (3 years)20153.457
Cites / Doc. (2 years)19990.536
Cites / Doc. (2 years)20000.695
Cites / Doc. (2 years)20011.030
Cites / Doc. (2 years)20021.659
Cites / Doc. (2 years)20031.442
Cites / Doc. (2 years)20042.223
Cites / Doc. (2 years)20052.442
Cites / Doc. (2 years)20063.336
Cites / Doc. (2 years)20073.076
Cites / Doc. (2 years)20083.912
Cites / Doc. (2 years)20094.315
Cites / Doc. (2 years)20104.643
Cites / Doc. (2 years)20114.560
Cites / Doc. (2 years)20123.952
Cites / Doc. (2 years)20133.379
Cites / Doc. (2 years)20143.649
Cites / Doc. (2 years)20153.311
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 Cites200068
Self Cites2001131
Self Cites2002211
Self Cites200398
Self Cites2004177
Self Cites2005150
Self Cites2006218
Self Cites2007524
Self Cites20081629
Self Cites20093692
Self Cites20105462
Self Cites20116878
Self Cites20127238
Self Cites20135256
Self Cites20145664
Self Cites20154935
Total Cites1999215
Total Cites2000274
Total Cites2001418
Total Cites2002604
Total Cites2003669
Total Cites20041104
Total Cites20051331
Total Cites20061682
Total Cites20072211
Total Cites20084519
Total Cites20098229
Total Cites201012992
Total Cites201117379
Total Cites201219529
Total Cites201320339
Total Cites201421500
Total Cites201521581
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 document19990.390
External Cites per document20000.493
External Cites per document20010.703
External Cites per document20020.938
External Cites per document20031.252
External Cites per document20041.947
External Cites per document20052.339
External Cites per document20062.946
External Cites per document20072.691
External Cites per document20082.706
External Cites per document20092.514
External Cites per document20102.847
External Cites per document20112.911
External Cites per document20122.752
External Cites per document20132.752
External Cites per document20142.770
External Cites per document20152.667
Cites per document19990.508
Cites per document20000.656
Cites per document20011.025
Cites per document20021.442
Cites per document20031.467
Cites per document20042.319
Cites per document20052.636
Cites per document20063.384
Cites per document20073.526
Cites per document20084.231
Cites per document20094.559
Cites per document20104.912
Cites per document20114.818
Cites per document20124.372
Cites per document20133.711
Cites per document20143.761
Cites per document20153.457
% 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 documents200931
Non-citable documents201044
Non-citable documents201158
Non-citable documents201265
Non-citable documents201396
Non-citable documents2014125
Non-citable documents2015363
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 documents20135480
Citable documents20145717
Citable documents20156242
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 documents2000253
Uncited documents2001221
Uncited documents2002214
Uncited documents2003230
Uncited documents2004185
Uncited documents2005161
Uncited documents2006139
Uncited documents2007167
Uncited documents2008212
Uncited documents2009240
Uncited documents2010311
Uncited documents2011408
Uncited documents2012559
Uncited documents2013854
Uncited documents2014895
Uncited documents20151208
Cited documents1999131
Cited documents2000166
Cited documents2001188
Cited documents2002210
Cited documents2003238
Cited documents2004310
Cited documents2005367
Cited documents2006376
Cited documents2007476
Cited documents2008869
Cited documents20091596
Cited documents20102378
Cited documents20113257
Cited documents20123973
Cited documents20134722
Cited documents20144947
Cited documents20155397
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