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

2015 Impact Factor Available summer 2016
2014 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

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

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Solid electrolytes with sufficiently high conductivities and stabilities are the elusive answer to the inherent shortcomings of organic liquid electrolytes prevalent in today's rechargeable batteries. We recently revealed a novel fast-ion-conducting sodium salt, Na2B12H12, which contains large, icosahedral, divalent B12H122− anions that enable impressive superionic conductivity, albeit only above its 529 K phase transition. Its lithium congener, Li2B12H12, possesses an even more technologically prohibitive transition temperature above 600 K. Here we show that the chemically related LiCB11H12 and NaCB11H12 salts, which contain icosahedral, monovalent CB11H12− anions, both exhibit much lower transition temperatures near 400 K and 380 K, respectively, and truly stellar ionic conductivities (>0.1 S cm−1) unmatched by any other known polycrystalline materials at these temperatures. With proper modifications, we are confident that room-temperature-stabilized superionic salts incorporating such large polyhedral anion building blocks are attainable, thus enhancing their future prospects as practical electrolyte materials in next-generation, all-solid-state batteries.
    Energy & Environmental Science 10/2015; DOI:10.1039/C5EE02941D
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    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.
    Energy & Environmental Science 08/2015; 8(10). DOI:10.1039/C5EE01705J
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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.
    Energy & Environmental Science 08/2015; 8(10). DOI:10.1039/C5EE01076D
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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.
    Energy & Environmental Science 08/2015; 8(10). DOI:10.1039/C5EE01988E
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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.
    Energy & Environmental Science 08/2015; 8(10). DOI:10.1039/C5EE02051D
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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.
    Energy & Environmental Science 07/2015; DOI:10.1039/C5EE01895A
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    ABSTRACT: One route to efficient storage, transportation and utilization of renewable hydrogen is through its conversion into ammonia (NH3). In order to examine the feasibility of an NH3 fuel cycle, the electrolysis of NH3-both as a liquid and dissolved in N,N-dimethylformamide-was investigated using platinum electrodes. The current scaled with electrolyte concentration, but was nominally independent of composition, suggesting solution resistance limitations. NH3 was found to be the chemical species oxidized at the anode which produced N2, but also resulted in a poisoned electrode surface which introduced an additional overpotential of ∼0.5 V. Surprisingly, NH4+ was the species reduced at the cathode via a one-electron transfer process to form, prior to H2 generation, which resulted in an additional cathodic overpotential. In addition to establishing the two half reactions of liquid ammonia electrolysis, the formal potentials of the reactions and the kinetic overpotentials were quantified.
    Energy & Environmental Science 07/2015; 8(9). DOI:10.1039/C5EE01840D
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    ABSTRACT: Photocatalytic hydrogen evolution via water splitting is an attractive scientific and technological goal to address the increasing global demand for clean energy and to reduce the climate change impact of CO2 emission. Although tremendous efforts have been made, hydrogen production by a robust and highly efficient system driven by visible light still remains a significant challenge. Herein we report that nickel phosphide, as a cocatalyst to form a well-designed integrated photocatalyst with one-dimensional semiconductor nanorods, highly improves the efficiency and durability for photogeneration of hydrogen in water. The highest rate for hydrogen production reached ~1,200 μmol·h-1∙mg-1 based on the photocatalyst. The turnover number (TON) reached ~3,270,000 in 90 hours with a turnover frequency (TOF) of 36,400 for Ni2P, and the apparent quantum yield was ~41% at 450 nm. The photoinduced charge transfer process was further confirmed by steady-state photoluminescence spectra and time-resolved photoluminescence spectra. Such extraordinary performance of a noble-metal-free artificial photosynthetic hydrogen production system has, to our knowledge, not been reported to date.
    Energy & Environmental Science 07/2015; 8(9). DOI:10.1039/C5EE01310K