Energy & Environmental Science (Energ Environ Sci)

Publisher: Royal Society of Chemistry (Great Britain), Royal Society of Chemistry

Journal description

The journal recognises the complexity of issues and challenges relating to energy and environmental science and therefore particularly welcomes work of an interdisciplinary nature across both the (bio) chemical and (bio)physical sciences and chemical engineering disciplines.

Current impact factor: 20.52

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 20.523
2013 Impact Factor 15.49
2012 Impact Factor 11.653
2011 Impact Factor 9.61
2010 Impact Factor 9.446

Impact factor over time

Impact factor
Year

Additional details

5-year impact 19.20
Cited half-life 2.90
Immediacy index 6.11
Eigenfactor 0.13
Article influence 4.63
Website Energy & Environmental Science website
Other titles Energy & environmental science, Energy and environmental science, EES
ISSN 1754-5706
OCLC 232359932
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Royal Society of Chemistry

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-prints on non-commercial repositories and arXiv
    • Post-print on author's personal website
    • Author's post-print on institutional repository after 12 months from acceptance
    • Publisher's version/PDF may be used on author's personal website only
    • Publisher PDF will be supplied and may be used on author's personal website only
    • Publisher will deposit the authors post-print, if appropriate in non-commercial repositories, not limited to funder's repositories after 12 months
    • Restrictions on further re-use and further distribution to be noted
    • Publisher will deposit in Chemical Sciences Article Repository if requested, after 12 months
    • Publisher last reviewed on 21/07/2015
  • Classification
    green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: A facile and scalable synthesis of mesoporous films impregnated with Au nanoparticles (NPs) as effective dielectrics is demonstrated for enhancing the nanogenerator performance based on vertical contact-separation mode. This technique is so simple and scalable, providing a promising solution for developing large-scale and practical self-powered devices. The spatial distribution of the Au NPs made it possible to fabricate the Au NPs-embedded mesoporous triboelectric nanogenerator (AMTENG) with high output power of 13 mW under cycled compressive force, giving over 5-fold power enhancement, compared with the flat film-based TENG under the same mechanical force. It is proposed that the presence of aligned dipoles produced due to the charges created by the contact between Au NPs and PDMS inside the pores can influence the surface potential energy of mesoporous films. With such an enhanced power output and unique device design, we demonstrate various applications such as self-powered shape mapping sensor, foot-step driven large-scale AMTENG, and an integrated circuit with a capacitor for powering a commercial cell phone for realizing self-powered systems from footsteps, wind power, and ocean waves.
    No preview · Article · Aug 2015 · Energy & Environmental Science
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    ABSTRACT: An n+p-Si microwire array coupled with a two-layer catalyst film consisting of Ni–Mo nanopowder and TiO2 light-scattering nanoparticles has been used to simultaneously achieve high fill factors and light-limited photocurrent densities from photocathodes that produce H2(g) directly from sunlight and water. The TiO2 layer scattered light back into the Si microwire array, while optically obscuring the underlying Ni–Mo catalyst film. In turn, the Ni–Mo film had a mass loading sufficient to produce high catalytic activity, on a geometric area basis, for the hydrogen-evolution reaction. The best-performing microwire array devices prepared in this work exhibited short-circuit photocurrent densities of −14.3 mA cm−2, photovoltages of 420 mV, and a fill factor of 0.48 under 1 Sun of simulated solar illumination, whereas the equivalent planar Ni–Mo-coated Si device, without TiO2 scatterers, exhibited negligible photocurrent due to complete light blocking by the Ni–Mo catalyst layer.
    No preview · Article · Aug 2015 · Energy & Environmental Science
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    ABSTRACT: In this report, bimetallic PdPt nanowires networks (NNWs) with tunable compositions have been successfully synthesized via a simple and efficient method. Electrocatalytic results prove that the catalytic activity of the as-prepared NNWs are related to their compositions, and the synthesized NNWs display great potential for the substitution of commercial Pt/C catalyst to be an effective catalyst for ethylene glycol and glycerol electrooxidation in the alkaline solution, and among the prepare PdPt NNWs, Pd55Pt30 show the best electrocatalytic activity.
    No preview · Article · Aug 2015 · Energy & Environmental Science
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    ABSTRACT: The insertion of guest species in graphite is the key feature utilized in applications ranging from energy storage and liquid purification to the synthesis of graphene. Recently, it was discovered that solvated-Na-ion intercalation can occur in graphite even though the insertion of Na ions alone is thermodynamically impossible; this phenomenon enables graphite to function as a promising anode for Na-ion batteries. In an effort to understand this unusual behavior, we investigate the solvated-Na-ion intercalation mechanism using in operando X-ray diffraction analysis, electrochemical titration, real-time optical observation, and density functional theory (DFT) calculations. The ultrafast intercalation is demonstrated in real time using millimeter-sized highly ordered pyrolytic graphite, in which instantaneous insertion of solvated-Na-ions occurs (in less than 2 s). The formation of various stagings with solvated-Na-ions in graphite is observed and precisely quantified for the first time. The atomistic configuration of the solvated-Na-ions in graphite is proposed based on the experimental results and DFT calculations. The correlation between the properties of various solvents and the Na ion co-intercalation further suggests a strategy to tune the electrochemical performance of graphite electrodes in Na rechargeable batteries.
    No preview · Article · Aug 2015 · Energy & Environmental Science
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    ABSTRACT: A combination of operando X-ray diffraction, pair distribution function (PDF) analysis coupled with electrochemical measurements and Mössbauer spectroscopy elucidates the nature of the phase transitions induced by insertion and extraction of sodium ions in P2-Na_(0.67)[Ni_yMn_(0.5+y)Fe_(0.5−2y)]O_2 (y = 0, 0.10, 0.15). When phase transitions are avoided, the optimal cathode material – P2-Na_(0.67)Fe_(0.2)Mn_(0.65)Ni_(0.15)O_2 – delivers 25% more energy than the unsubstituted material, sustaining high specific energy (350 Wh kg^(−1)) at moderate rates and maintains 80% of the original energy density after 150 cycles – a significant improvement in performance vs. the unsubstituted analogue. The crystal structure of the high voltage phase is solved for the first time by X-ray PDF analysis of P2-Na_(0.67−z)Fe_(0.5)Mn_(0.5)O_2 (where z ∼ 0.5), revealing that migration of the transition metals – particularly Fe^(3+) – into tetrahedral sites in the interlayer space occurs at high potential. This results in new short range order between two adjacent layers. Although the transition metal migration is reversible as proven by electrochemical performance, it induces a large disfavourable cell polarization. The deleterious high voltage transition is mitigated by substitution of Fe^(3+) by Mn^(4+)/Ni^(2+), giving rise to better cycling performance. Moreover, as demonstrated by ^(57)Fe Mössbauer spectroscopy, the much lower ratio of Fe^(4+)O_6 to Fe^(3+)O_6 observed systematically across the range of Ni content – compared to the values expected from a purely ionic model – suggests redox activity involves the O-2p orbitals owing to their overlap with the transition metal-3d orbitals.
    No preview · Article · Aug 2015 · Energy & Environmental Science
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    ABSTRACT: The development of new layered materials has experienced an evolution from graphene to metal oxide and metal chalcogenide nanosheets, and more recently to two-dimensional (2D) covalent organic frameworks, such as conjugated carbon nitride nanosheets (CNNs) with spectral gap in the band structure. The anisotropic 2D geometric morphology, together with the aromatic π-conjugated framework, endows polymeric CNNs with unique properties, such as enlarged surface area with highly open-up flat structure, reducing thickness with enhanced electron mobility and with intrinsic semiconductive features, which support their attractive bandgap- and surface-engineered applications ranging from energy-related topics to other new emerging fields. In this review, recent research advances in the establishment of two synthetic strategies for CNNs are firstly overviewed, namely, top-down delamination of graphitic carbon nitride (CN) solids and bottom-up assembly of molecular building blocks in 2D manner. The efficient approaches aiming at advancing CNNs for target-specific applications, including nanocomposite, doping, sensitization, copolymerization and nanorefinement are also described as the solutions.
    No preview · Article · Jul 2015 · Energy & Environmental Science