ImpaQ Ecosystem•Clarivate, Scopus & CORE Data
Clarivate WoS 2024 / 2025 Data
IMPAQ
WoS SCIE Q2Scopus Q1SCImago #5,197Hybrid

Carbon Letters

Acronym:cale
•
Abbreviation (ISO):CARBON LETT
•
Identifier (ISSN):1976-4251(Print)/2233-4998(Online)
•
Publisher:Springer Singapore
Clarivate IF (2026)
6.2↑ +0.4
Journal Impact Factor
IF Trend↓
WoS Quartile
Q2
WoS SCIEJCR Quartile
Clarivate WoS JCR
WoS Categories↓
JCR Release Date: 2026-06-17

Impact Factor Trend (2018–2026)

Clarivate IF trend for Carbon Letters

WoS Q2
13681.4320181.8120191.9920201.9220213.1220224.520235.520245.820256.22026
Annual Impact Factor Metric
Current (2026):6.2
Scopus SJR & RankScopus Q1
0.962
#5,197

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025
H-Index (2025)
49

49 papers with at least that number of citations each

WoS: SCIE / JCRQ2
Self-Citation Rate20%
Safe Level (< 15%)Warning Level (> 20%)
Self-citation below 15% indicates strong scholarly independence.
Volume & Open AccessHybrid
103articles/year
3.42% Gold OA•78.79% Original Research

Aims & Scope

Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.

Topics Covered (Recognized by AI)
Materials science99.7%Chemistry94.6%Engineering91.8%Organic chemistry91.6%Physics88.1%Composite material87.7%Chemical engineering79.9%Quantum mechanics76.8%Physical chemistry58.9%Computer science58.7%Mathematics57.7%Biology55.5%Algorithm53.6%Composite number53.6%Nanotechnology52.5%Metallurgy48.1%Carbon fibers45.3%Biochemistry35.1%Optics35%Adsorption34.5%Thermodynamics28.4%Catalysis26.4%Geology21.9%Activated carbon20.7%Nuclear magnetic resonance20.6%Electrode20.4%

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI
JCRSCIE2026

CHEMISTRY, MULTIDISCIPLINARY

Q2
Rank70/250
IndexSCIE
JCRSCIE2026

MATERIALS SCIENCE, MULTIDISCIPLINARY

Q2
Rank139/472
IndexSCIE
JCISCIE2026

CHEMISTRY, MULTIDISCIPLINARY

Q2
Rank70/251
IndexSCIE
JCISCIE2026

MATERIALS SCIENCE, MULTIDISCIPLINARY

Q2
Rank151/473
IndexSCIE

Annual Historical Statistics & Publications

Track annual publication volume, total citations, and Impact Factor evolution

12 year
2026Latest
IF6.2
Articles / Year145
Total Citations82
2025
IF5.8
Articles / Year155
Total Citations939
2024
IF5.5
Articles / Year176
Total Citations2,314
2023
IF4.5
Articles / Year212
Total Citations3,500
2022
IF3.117
Articles / Year137
Total Citations3,736

SCImago & Scopus Journal Intelligence

Global SCImago ranking, SJR prestige index, Scopus coverage, and societal policy impact

Rank #5,197Scopus Q1SCImago Profile
Scopus Coverage:2014-2026
Scopus Broad Areas:Chemical EngineeringChemistryEnergyMaterials Science
Scopus Citation Rank (SJR)Q1
0.962

Weighted prestige citation metric per document indexed in the Scopus database.

Quartile: Scopus Q1
Citations / Doc (2 years)
6.27

Average citations received per document published in the 2-year window.

2-Year Citation Window
Estimated Publication Fee (APC)
$3,157 USD

Estimated Article Processing Charge for Open Access publication.

Estimated cost / article

Scopus 3-Year Publication & Citation Window

3-Year Citations3,283
3-Year Documents502
Citable Documents502

Aggregated from Scopus database across the 3-year SJR evaluation window.

Societal Impact & Inclusivity (SCImago)

Policy Citations (Overton)0

Citations in government and international policy documents

Female Author Rate34.1%

Percentage of female authors published in the journal

Real-world societal policy reach and author gender diversity tracked by SCImago.

Scopus Subject Categories

Ceramics and CompositesQ1
Energy Engineering and Power TechnologyQ1
Inorganic ChemistryQ1
Materials ChemistryQ1
Organic ChemistryQ1
Process Chemistry and TechnologyQ1
Renewable Energy, Sustainability and the EnvironmentQ2
Academic Metric Intelligence

Journal Metrics & Citation Visualizations

Total Cites vs Self-Cites

Evaluation of scholarly independence and citation reach

Total citations steady growth
Self-citation: 20%

Citations per Document

Citation metric windows across 2, 3, and 4 years

Cites / Doc (4 years)Cites / Doc (3 years)Cites / Doc (2 years)

Chinese Academy of Sciences (CAS) Classification

Major / minor zone classification and CAS Early Warning List history

Major Category (Broad Field):
3区 (Zone 3)Materials Science
Minor Category (Specific Field):
3区CHEMISTRY, MULTIDISCIPLINARY
CAS Early Warning List History:
Updated annually: 2020 – 2024
2020
Not warned
2021
Not warned
2022
Not warned
2023
Not warned
2024
Not warned

Academic Intelligence Overview & Context

ImpaQ Analysis

Carbon Letters (acronym: cale, abbr: CARBON LETT, ISSN: 1976-4251) is a peer-reviewed international scholarly journal in the field of CHEMISTRY, published by Springer Singapore in South Korea since 2019. The periodical holds a Journal Impact Factor (JIF) of 6.20, ranking in quartile Q2 of Web of Science (SCIE), a Scopus SJR indicator of 0.962 (Q1), an H-index of 49.

The journal enforces rigorous peer evaluation with a publication frequency of 7 issues per year, an annual output of approximately 103 scientific articles. In terms of accessibility and author fees, it operates under the Hybrid model with an estimated APC of $3,157 USD. It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.

Publishing & Editorial Information

Detailed publisher, peer-review turnaround, and publication cycle specifications

Open Access Model
Hybrid
Publisher
Springer Singapore
Publication Language
English
Frequency
7 issues per year
Founding Year
2019
Indexing & Databases
SCIEScopusPubMed
Editorial Address
SHIROYAMA TRUST TOWER 5F, 4-3-1 TORANOMON, MINATO-KU, TOKYO, JAPAN, 105-6005

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Journals in the same research field with comparable impact metrics

Record UUID: fed8732f-877c-4f69-b5e6-3fa9583ceadc
Database Updated: 2026-10-01