Scimago Journal & Country Rank

International Journal of Hydrogen Energy


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Elsevier Ltd.



Publication type








How to publish in this journal



The International Journal of Hydrogen Energy aims to provide a central vehicle for the exchange and dissemination of new ideas, technology developments and research results in the field of Hydrogen Energy between scientists and engineers throughout the world. The emphasis is placed on original research, both analytical and experimental, covering all aspects of Hydrogen Energy, including production, storage, transmission, utilization, enabling technologies, environmental impact, economic and international aspects of hydrogen and hydrogen carriers such as NH3, CH4, alcohols, etc. The utilization includes thermochemical (combustion), photochemical, electrochemical (fuel cells) and nuclear conversion of hydrogen, hydrogen isotopes and/or hydrogen carriers to thermal, mechanical and electrical energies, and their applications in transportation (including aerospace), industrial, commercial and residential sectors. When outstanding new advances are made, or when new areas have been developed to a definitive stage, special review articles will be considered. Shorter communications are also welcome. Join the conversation about this journal

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
Condensed Matter Physics2018Q1
Condensed Matter Physics2019Q1
Condensed Matter Physics2020Q1
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
Energy Engineering and Power Technology2018Q1
Energy Engineering and Power Technology2019Q1
Energy Engineering and Power Technology2020Q1
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
Fuel Technology2018Q1
Fuel Technology2019Q1
Fuel Technology2020Q1
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
Renewable Energy, Sustainability and the Environment2018Q2
Renewable Energy, Sustainability and the Environment2019Q2
Renewable Energy, Sustainability and the Environment2020Q1

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.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

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)19990.520
Cites / Doc. (4 years)20000.644
Cites / Doc. (4 years)20010.916
Cites / Doc. (4 years)20021.335
Cites / Doc. (4 years)20031.397
Cites / Doc. (4 years)20042.194
Cites / Doc. (4 years)20052.631
Cites / Doc. (4 years)20063.480
Cites / Doc. (4 years)20073.562
Cites / Doc. (4 years)20084.519
Cites / Doc. (4 years)20094.742
Cites / Doc. (4 years)20105.019
Cites / Doc. (4 years)20114.994
Cites / Doc. (4 years)20124.562
Cites / Doc. (4 years)20133.973
Cites / Doc. (4 years)20143.987
Cites / Doc. (4 years)20153.785
Cites / Doc. (4 years)20164.008
Cites / Doc. (4 years)20174.441
Cites / Doc. (4 years)20184.247
Cites / Doc. (4 years)20194.929
Cites / Doc. (4 years)20205.437
Cites / Doc. (3 years)19990.520
Cites / Doc. (3 years)20000.663
Cites / Doc. (3 years)20011.051
Cites / Doc. (3 years)20021.403
Cites / Doc. (3 years)20031.503
Cites / Doc. (3 years)20042.266
Cites / Doc. (3 years)20052.602
Cites / Doc. (3 years)20063.344
Cites / Doc. (3 years)20073.544
Cites / Doc. (3 years)20084.220
Cites / Doc. (3 years)20094.560
Cites / Doc. (3 years)20104.933
Cites / Doc. (3 years)20114.828
Cites / Doc. (3 years)20124.391
Cites / Doc. (3 years)20133.724
Cites / Doc. (3 years)20143.812
Cites / Doc. (3 years)20153.737
Cites / Doc. (3 years)20163.989
Cites / Doc. (3 years)20174.413
Cites / Doc. (3 years)20184.314
Cites / Doc. (3 years)20195.072
Cites / Doc. (3 years)20205.632
Cites / Doc. (2 years)19990.556
Cites / Doc. (2 years)20000.707
Cites / Doc. (2 years)20011.034
Cites / Doc. (2 years)20021.621
Cites / Doc. (2 years)20031.471
Cites / Doc. (2 years)20042.166
Cites / Doc. (2 years)20052.404
Cites / Doc. (2 years)20063.323
Cites / Doc. (2 years)20073.124
Cites / Doc. (2 years)20083.902
Cites / Doc. (2 years)20094.312
Cites / Doc. (2 years)20104.658
Cites / Doc. (2 years)20114.571
Cites / Doc. (2 years)20123.969
Cites / Doc. (2 years)20133.385
Cites / Doc. (2 years)20143.696
Cites / Doc. (2 years)20153.567
Cites / Doc. (2 years)20163.846
Cites / Doc. (2 years)20174.431
Cites / Doc. (2 years)20184.332
Cites / Doc. (2 years)20195.194
Cites / Doc. (2 years)20205.748
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 Cites199951
Self Cites200069
Self Cites2001131
Self Cites2002198
Self Cites2003106
Self Cites2004179
Self Cites2005150
Self Cites2006222
Self Cites2007524
Self Cites20081610
Self Cites20093656
Self Cites20105437
Self Cites20116846
Self Cites20127247
Self Cites20135239
Self Cites20145811
Self Cites20154985
Self Cites20166334
Self Cites20179332
Self Cites20187908
Self Cites201911173
Self Cites202013165
Total Cites1999221
Total Cites2000278
Total Cites2001430
Total Cites2002592
Total Cites2003684
Total Cites20041117
Total Cites20051371
Total Cites20061749
Total Cites20072268
Total Cites20084537
Total Cites20098304
Total Cites201013151
Total Cites201117566
Total Cites201219795
Total Cites201320629
Total Cites201421985
Total Cites201523738
Total Cites201623865
Total Cites201728641
Total Cites201830529
Total Cites201937944
Total Cites202045807
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 document19990.403
External Cites per document20000.500
External Cites per document20010.733
External Cites per document20020.945
External Cites per document20031.296
External Cites per document20041.966
External Cites per document20052.418
External Cites per document20063.079
External Cites per document20072.845
External Cites per document20082.782
External Cites per document20092.597
External Cites per document20102.934
External Cites per document20112.984
External Cites per document20122.817
External Cites per document20132.817
External Cites per document20142.843
External Cites per document20152.992
External Cites per document20162.965
External Cites per document20173.007
External Cites per document20183.220
External Cites per document20193.602
External Cites per document20204.047
Cites per document19990.520
Cites per document20000.663
Cites per document20011.051
Cites per document20021.403
Cites per document20031.503
Cites per document20042.266
Cites per document20052.602
Cites per document20063.344
Cites per document20073.544
Cites per document20084.220
Cites per document20094.560
Cites per document20104.933
Cites per document20114.828
Cites per document20124.391
Cites per document20133.724
Cites per document20143.812
Cites per document20153.737
Cites per document20163.989
Cites per document20174.413
Cites per document20184.314
Cites per document20195.072
Cites per document20205.632
% 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 documents19993
Non-citable documents20001
Non-citable documents20011
Non-citable documents20025
Non-citable documents20039
Non-citable documents200416
Non-citable documents200522
Non-citable documents200627
Non-citable documents200727
Non-citable documents200823
Non-citable documents200931
Non-citable documents201037
Non-citable documents201146
Non-citable documents201253
Non-citable documents201376
Non-citable documents201478
Non-citable documents201585
Non-citable documents201670
Non-citable documents201769
Non-citable documents201852
Non-citable documents201949
Non-citable documents202069
Citable documents1999422
Citable documents2000418
Citable documents2001408
Citable documents2002417
Citable documents2003446
Citable documents2004477
Citable documents2005505
Citable documents2006496
Citable documents2007613
Citable documents20081052
Citable documents20091790
Citable documents20102629
Citable documents20113592
Citable documents20124455
Citable documents20135463
Citable documents20145689
Citable documents20156267
Citable documents20165913
Citable documents20176421
Citable documents20187025
Citable documents20197432
Citable documents20208065
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 documents1999289
Uncited documents2000250
Uncited documents2001219
Uncited documents2002217
Uncited documents2003217
Uncited documents2004180
Uncited documents2005156
Uncited documents2006137
Uncited documents2007161
Uncited documents2008200
Uncited documents2009226
Uncited documents2010291
Uncited documents2011386
Uncited documents2012516
Uncited documents2013791
Uncited documents2014788
Uncited documents2015851
Uncited documents2016738
Uncited documents2017677
Uncited documents2018835
Uncited documents2019701
Uncited documents2020689
Cited documents1999136
Cited documents2000169
Cited documents2001190
Cited documents2002205
Cited documents2003238
Cited documents2004313
Cited documents2005371
Cited documents2006386
Cited documents2007479
Cited documents2008875
Cited documents20091595
Cited documents20102375
Cited documents20113252
Cited documents20123992
Cited documents20134748
Cited documents20144979
Cited documents20155501
Cited documents20165245
Cited documents20175813
Cited documents20186242
Cited documents20196780
Cited documents20207445
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Metrics based on Scopus® data as of April 2021
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