ChemSusChem

Cover image for Vol. 8 Issue 17

Editor-in-Chief: Guido Kemeling; Editorial Board Chairs: Matthias Beller, Gabriele Centi, Licheng Sun

Impact Factor: 7.657

ISI Journal Citation Reports © Ranking: 2014: 18/157 (Chemistry Multidisciplinary)

Online ISSN: 1864-564X

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemCatChem, ChemElectroChem, ChemPhysChem, Energy Technology

8_17/2015Cover Picture: Improvement of Energy Capacity with Vitamin C Treated Dual-Layered Graphene–Sulfur Cathodes in Lithium–Sulfur Batteries (ChemSusChem 17/2015)

The Front Cover Image shows the artistic representation of sulfur nanoparticle formation and graphene surface functionalization through Vitamin C treatment, which improves the performance of next-generation lithium–sulfur batteries for electric vehicles. Vitamin C—a low-cost and eco-friendly substance—simultaneously allows the synthesis of uniformly sized sulfur nanoparticles in the range of tens of nanometers and facilitates controlled oxygen functionalization of graphene. A dual-layered cathode-based lithium–sulfur battery is then assembled using the Vitamin C-reduced graphene oxide in the cathode and as an interlayer. This strategy leads to a high specific capacity and stable performance of the battery even under high current densities. More details can be found in the Full Paper by J. Lee et al. on page 2883 in Issue 17, 2015. (DOI: 10.1002/cssc.201500111).

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8_17b/2015Back Cover: Towards Stable Lithium–Sulfur Batteries with a Low Self-Discharge Rate: Ion Diffusion Modulation and Anode Protection (ChemSusChem 17/2015)

The Back Cover Picture shows the configuration of a lithium–sulfur cell using an ion-selective separator, in which the multi-electron chemistry between sulfur and lithium is well preserved, whereas the polysulfide anion diffusion is suppressed. Therefore, there is no high-order polysulfides diffusion through the separator and no parasitic reaction with the lithium anode to form low-order polysulfides nor their subsequent shuttle back to the cathode side. The as-obtained lithium–sulfur cell has an ultralow self-discharge rate. Moreover, the anode protection is also realized by the formation of a highly dense passivation layer induced by LiNO3, which reduces the self-discharge. More details can be found in the Full Paper by Q. Zhang et al. on page 2892 in Issue 17, 2015. (DOI: 10.1002/cssc.201500428).

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