Johan Hjelm

6.2k total citations · 1 hit paper
115 papers, 5.2k citations indexed

About

Johan Hjelm is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Electrochemistry. According to data from OpenAlex, Johan Hjelm has authored 115 papers receiving a total of 5.2k indexed citations (citations by other indexed papers that have themselves been cited), including 63 papers in Electrical and Electronic Engineering, 44 papers in Materials Chemistry and 19 papers in Electrochemistry. Recurrent topics in Johan Hjelm's work include Advancements in Solid Oxide Fuel Cells (29 papers), Electrochemical Analysis and Applications (19 papers) and Fuel Cells and Related Materials (17 papers). Johan Hjelm is often cited by papers focused on Advancements in Solid Oxide Fuel Cells (29 papers), Electrochemical Analysis and Applications (19 papers) and Fuel Cells and Related Materials (17 papers). Johan Hjelm collaborates with scholars based in Denmark, Sweden and Ireland. Johan Hjelm's co-authors include Anders Hagfeldt, Anita Solbrand, Henrik Lindström, Sten‐Eric Lindquist, Sven Södergren, Håkan Rensmo, Jimmi Nielsen, Peter Blennow, Mogens Bjerg Mogensen and Christopher Graves and has published in prestigious journals such as Journal of the American Chemical Society, Nature Communications and The Journal of Chemical Physics.

In The Last Decade

Johan Hjelm

112 papers receiving 5.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Li⁺ Ion Insertion in TiO₂ (Anatase). 2. Voltammetry on Nanoporous Films

1997 1.5k citations Johan Hjelm, Anders Hagfeldt et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Johan Hjelm Denmark	36	3.3k	2.2k	1.5k	688	506	115	5.2k
Zhihong Wang China	34	2.3k 0.7×	2.3k 1.1×	1.5k 1.0×	470 0.7×	301 0.6×	261	4.8k
Pan Du China	36	2.5k 0.8×	1.1k 0.5×	777 0.5×	820 1.2×	448 0.9×	88	3.9k
Fan Wang China	34	2.5k 0.8×	1.4k 0.6×	1.4k 0.9×	676 1.0×	402 0.8×	131	4.2k
Yan Zeng China	37	3.6k 1.1×	1.7k 0.8×	2.0k 1.4×	1.3k 1.9×	216 0.4×	126	5.7k
Yuhan Wu China	42	3.0k 0.9×	1.4k 0.6×	1.6k 1.1×	1.3k 1.8×	462 0.9×	207	5.1k
Chen Ling United States	37	3.9k 1.2×	2.0k 0.9×	826 0.6×	563 0.8×	967 1.9×	99	5.4k
Leyuan Zhang China	36	6.1k 1.8×	1.0k 0.5×	1.7k 1.1×	1.2k 1.8×	1.5k 2.9×	84	6.9k
He Huang China	35	4.2k 1.3×	1.7k 0.8×	886 0.6×	676 1.0×	1.3k 2.6×	140	6.1k
Xiao Renshaw Wang Singapore	37	2.2k 0.7×	2.9k 1.3×	1.9k 1.3×	810 1.2×	158 0.3×	112	5.3k

Countries citing papers authored by Johan Hjelm

Since Specialization

Citations

This map shows the geographic impact of Johan Hjelm's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Johan Hjelm with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johan Hjelm more than expected).

Fields of papers citing papers by Johan Hjelm

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johan Hjelm. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Johan Hjelm. The network helps show where Johan Hjelm may publish in the future.

Co-authorship network of co-authors of Johan Hjelm

This figure shows the co-authorship network connecting the top 25 collaborators of Johan Hjelm. A scholar is included among the top collaborators of Johan Hjelm based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Johan Hjelm. Johan Hjelm is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hjelm, Johan, et al.. (2026). Integrating Flow Field Geometries within Porous Electrode Architectures for Enhanced Flow Battery Performance (Small 1/2026). Small. 22(1).

Hansen, Heine Anton, et al.. (2024). Unifying the ORR and OER with surface oxygen and extracting their intrinsic activities on platinum. Nature Communications. 15(1). 7336–7336. 20 indexed citations

Shin, Mingyu, Saleem Abbas, Xuan Huy, et al.. (2024). Sulfonated para‐Polybenzimidazole Membranes for Use in Vanadium Redox Flow Batteries. Advanced Energy Materials. 15(25). 15 indexed citations

Hjelm, Johan, et al.. (2024). Aggregation and Capacity Limiting Effects in Anthraquinone-Based Flow Battery Negolytes. Journal of The Electrochemical Society. 171(2). 20501–20501. 9 indexed citations

Boillat, Pierre, et al.. (2024). Correlating Electrolyte Infiltration with Accessible Surface Area in Macroporous Electrodes using Neutron Radiography. Journal of The Electrochemical Society. 171(5). 53509–53509. 2 indexed citations

Meng, Zhe, et al.. (2024). Insight into Selectivity Differences of Glycerol Electro-Oxidation on Pt(111) and Ag(111). ACS Catalysis. 14(4). 2455–2462. 10 indexed citations

Isbrandt, Thomas, Mads Radmer Almind, Thomas Ostenfeld Larsen, et al.. (2023). On the Capacity and Stability of a Biosynthesized Bis-quinone Flow Battery Negolyte. ACS Sustainable Chemistry & Engineering. 11(24). 9206–9215. 4 indexed citations

Almind, Mads Radmer, et al.. (2023). Tuning Polybenzimidazole‐Derived Crosslinked Interpenetrating Network Membranes for Vanadium Redox Flow Batteries. Batteries & Supercaps. 6(9). 4 indexed citations

Kraglund, Mikkel Rykær, Mads Radmer Almind, Johan Hjelm, et al.. (2023). Quaternary Ammonium‐Free Membranes for Water Electrolysis with 1 m KOH. Advanced Energy Materials. 13(46). 22 indexed citations

10.

Vries, F. de, et al.. (2022). Bipolar Verdazyl Radicals for Symmetrical Batteries: Properties and Stability in All States of Charge. ChemPhysChem. 24(4). e202200779–e202200779. 14 indexed citations

11.

Sanna, Simone, Vincenzo Esposito, Jens Wenzel Andreasen, et al.. (2015). Enhancement of the chemical stability in confined δ-Bi2O3. Nature Materials. 14(5). 500–504. 155 indexed citations

12.

Esposito, Vincenzo, Johan Hjelm, Debora Marani, et al.. (2014). Fabrication of thin yttria-stabilized-zirconia dense electrolyte layers by inkjet printing for high performing solid oxide fuel cells. Journal of Power Sources. 273. 89–95. 72 indexed citations

13.

Marani, Debora, Johan Hjelm, & Marie Wandel. (2013). Use of Intrinsic Viscosity for Evaluation of Polymer-Solvent Affinity. 21. 10 indexed citations

14.

Sheridan, Eoin, Johan Hjelm, & Robert J. Forster. (2007). Electrodeposition of gold nanoparticles on fluorine-doped tin oxide: Control of particle density and size distribution. Journal of Electroanalytical Chemistry. 608(1). 1–7. 57 indexed citations

15.

Ishikawa, Norihiro, et al.. (2006). Jupiter: Peer-to-Peer Networking Platform over Heterogeneous Networks. SHILAP Revista de lepidopterología. 7 indexed citations

16.

Guckian, Adrian, M. Ciesielski, Olaf Walter, et al.. (2004). Assessment of intercomponent interaction in phenylene bridged dinuclear ruthenium(ii) and osmium(ii) polypyridyl complexes. Dalton Transactions. 3943–3943. 29 indexed citations

17.

Forster, Robert J., Javed Iqbal, Johan Hjelm, & Tia E. Keyes. (2004). Solvent effects on charge transport through solid deposits of [Os(4,4′-diphenyl-2,2′-dipyridyl)₂Cl₂]. The Analyst. 129(12). 1186–1192. 6 indexed citations

18.

Hjelm, Johan, Edwin C. Constable, Egbert Figgemeier, et al.. (2002). A rod-like polymer containing {Ru(terpy)2} units prepared by electrochemical coupling of pendant thienyl moieties. Chemical Communications. 284–285. 45 indexed citations

19.

Hjelm, Johan. (2002). Creating Location Services for the Wireless Web: Professional Developer's Guide. International Journal of Biological Macromolecules. 237. 123990–123990. 16 indexed citations

20.

Hjelm, Johan. (2001). Creating the semantic Web with RDF. CERN Document Server (European Organization for Nuclear Research). 18 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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