Is Your Paper Ready for International Journal of Hydrogen Energy? The Hydrogen Relevance Standard

Here's what separates IJHE from general-purpose energy or electrochemistry journals. Every paper that lands on an editor's desk gets one immediate question: does this work directly advance the hydrogen energy ecosystem?

That sounds obvious, but it isn't. A surprising number of submissions fail this test. Here's what the failure looks like in practice.

The materials paper with a hydrogen footnote. You've developed a new perovskite oxide with interesting electrochemical properties. In the last paragraph of the introduction, you mention it "could potentially be applied to solid oxide fuel cells." That's not enough. IJHE editors have seen this move thousands of times. If the paper doesn't actually test the material in a hydrogen-related application, or at least characterize properties that are specifically relevant to hydrogen systems (proton conductivity, hydrogen permeability, stability under hydrogen-rich atmospheres), it won't pass the desk.

The electrochemistry paper that belongs in Electrochimica Acta. You've done careful work on electrode kinetics or charge transfer mechanisms. It's solid science, but the system you studied is a lithium-ion battery, a supercapacitor, or a generic redox couple. There's no water splitting, no hydrogen oxidation, no proton exchange membrane in sight. IJHE isn't the right home. Electrochimica Acta or Journal of the Electrochemical Society would be far better fits, and you'd reach more relevant readers there anyway.

The renewable energy paper with no hydrogen angle. Solar cell optimization, wind farm modeling, grid-scale battery storage. These are all important topics, but they don't belong in IJHE unless the paper specifically addresses hydrogen production from renewables, hydrogen as an energy storage medium, or the integration of hydrogen into renewable energy systems.

The editors aren't being arbitrary. IJHE's scope is defined by hydrogen as a specific energy carrier, not energy research broadly. If you can remove the word "hydrogen" from your title and abstract without changing the paper's core contribution, it probably doesn't belong here.

Having reviewed the editorial signals from IJHE over several years, these are the patterns that get papers rejected most often:

Weak experimental design for applied claims. You claim your catalytic material outperforms the state of the art, but you've tested it at one temperature, one pressure, and one current density. IJHE reviewers in the hydrogen space know the operating conditions that matter. A PEM electrolysis paper tested only at room temperature with no durability data isn't convincing. Reviewers want to see performance under realistic conditions, and they'll specifically ask for stability tests over hundreds or thousands of hours.

Review papers that aren't reviews. IJHE receives a lot of review submissions. The journal publishes them, but the bar is higher than many authors realize. A review that just summarizes 200 papers without offering a critical perspective, identifying research gaps, or proposing a forward-looking framework will be rejected. If you're writing a review, you need a thesis. What's the field getting wrong? Where should resources go next? A literature summary isn't enough.

Computational work disconnected from experiment. DFT studies of catalytic surfaces for hydrogen evolution are common in IJHE. The ones that get published typically include experimental validation, or at least make predictions that are testable with existing methods. A purely computational paper that predicts a new material will be great for hydrogen storage, but doesn't synthesize it or cite ongoing experimental efforts, faces an uphill battle.

Incremental parameter optimization. You've changed the loading of platinum on a carbon support from 20% to 25% and gotten a 5% improvement in hydrogen evolution activity. That's not a paper for IJHE. It's supplementary data for a paper that already exists. Editors want to see either new materials, new mechanisms, new system designs, or significant performance jumps, not minor tweaks to established systems.

IJHE uses Elsevier's standard submission system (Editorial Manager). A few things to watch for:

Graphical abstract. Required. Make it meaningful, not decorative. The graphical abstract appears in ScienceDirect search results and can drive or kill clicks. A clear schematic of your hydrogen system with performance numbers will outperform a generic diagram every time.

Highlights. Elsevier requires 3-5 bullet points, each under 85 characters. These aren't an afterthought. They appear prominently on the article page and in email alerts. Write them as specific claims, not vague statements. "PEM electrolyzer achieves 1.8 A/cm2 at 1.8 V for 500 hours" beats "Novel electrolyzer shows excellent performance."

Keywords. Don't waste keywords on broad terms like "hydrogen" or "energy." The journal name already tells search engines that. Use specific terms: "alkaline water electrolysis," "metal hydride tank design," "SOFC degradation mechanism."

Reference formatting. IJHE uses numbered references in order of appearance. Double-check that your reference manager hasn't introduced errors, especially with DOIs. Reviewers notice broken references, and it signals carelessness.

Article types. IJHE publishes full-length research articles, short communications, and review articles. Short communications aren't just shorter papers. They're meant for results that are complete but narrow in scope, where 3,000-4,000 words tell the full story. If you're trying to squeeze a 7,000-word paper into a short communication, you'll end up cutting things reviewers need to see.

Once your paper clears the desk, expect 2-3 reviewers. IJHE's reviewer pool is large, which is both an advantage and a challenge. The advantage: your paper usually won't sit for months waiting for a reviewer to accept the invitation. The challenge: reviewer quality varies more than at smaller, more selective journals. You might get one deeply expert review and one that's clearly from someone adjacent to your subfield.

Revision requests are the norm for papers that aren't rejected. The most common requests involve additional characterization, longer durability tests, or better comparison with existing literature. Don't fight reasonable revision requests. IJHE editors generally give authors 30-60 days for revisions, and they're flexible if you need more time for additional experiments.

One thing I've noticed: IJHE reviewers care a lot about reproducibility details. If your methods section doesn't specify the membrane type, the gas diffusion layer, the catalytic material loading method, and the operating conditions precisely enough for another lab to replicate your work, expect to be asked.

Work through these questions honestly. They'll save you months if the answer to any of them is "no."

1. Is hydrogen central to your paper, or peripheral? If you removed all hydrogen-related content, would the core scientific contribution still stand? If yes, IJHE isn't the right journal.

1. Have you tested under realistic conditions? Room temperature electrochemistry with no durability data won't satisfy reviewers who work on real hydrogen systems. What conditions would your material or device face in an actual hydrogen plant or vehicle?

1. Do you compare against the right benchmarks? Commercial Pt/C for hydrogen evolution, Nafion membranes for PEM systems, standard metal hydrides for storage. IJHE reviewers know these benchmarks and will flag papers that cherry-pick weak comparisons.

1. Is your contribution an advance or a confirmation? Confirming what's already known with a slightly different material isn't novel enough. What does your work tell us that we didn't already know?

1. Would your paper fit better in a competing journal? If the answer is Journal of Power Sources or Electrochimica Acta, submit there. You'll get faster, more relevant reviews and reach more of the right readers.

1. Have you checked the recent IJHE literature? If three papers on essentially the same topic appeared in the last six months, yours needs to clearly differentiate itself. The journal's high volume means your niche may already be well-covered.

IJHE is at its best when it publishes papers that sit at the intersection of fundamental science and hydrogen engineering. A new electrocatalytic material tested in a real PEM electrolyzer under industrial conditions. A novel metal hydride system with gravimetric density measurements at application-relevant temperatures. A techno-economic model that changes how we think about the cost trajectory of green hydrogen. A safety study that identifies a failure mode in hydrogen refueling stations nobody had documented before.

The journal doesn't need your paper to be flashy. It needs it to be relevant, rigorous, and clearly connected to the hydrogen energy ecosystem. That's a lower bar than Nature Energy but a more specific one than most researchers appreciate.

Before submitting, run your manuscript through a pre-submission review to catch scope mismatches and presentation issues. At a journal that processes 6,000+ papers per year, editors make quick decisions. You don't want formatting problems or a buried hydrogen connection to cost you a desk rejection.

• International Association for Hydrogen Energy (https://www.iahe.org)
• Journal of Power Sources author guidelines, Elsevier
• ACS Energy Letters author guidelines, American Chemical Society