RSC主编推荐：能源领域精彩文章快览（免费阅读原文）

英国皇家化学会（RSC）是一个超过175年历史的面向全球化学家的非营利会员制机构，旗下拥有44种期刊，其中很多在化学领域有很高影响力。为了进一步帮助广大读者追踪科技前沿热点，X-MOL团队与英国皇家化学会合作，推出英国皇家化学会期刊主编推荐的精彩文章快览，本期文章属“能源领域”，英文点评来自英国皇家化学会期刊的主编。如果大家对我们的解读有更多的补充和点评，欢迎在文末写评论发表您的高见！

Chemical Science (IF: 9.556)

1. Activating the surface and bulk of hematite photoanodes to improve solar water splitting

Chem. Sci., 2019, Advance Article

DOI: 10.1039/C9SC04110A

A team of scientists from UNIST, Korea, propose a simple electrochemical activation treatment to improve the photoelectrochemical performance of Nb, Sn co-doped hematite nanorods. The activation process involves an initial thrice cathodic scanning (reduction) and a subsequent thrice anodic scanning (oxidation) to modify the surface and bulk properties of the Nb,Sn:Fe₂O₃ photoanode. The photocurrent density is increased by 62.3% from 1.88 to 3.05 mA/cm² at 1.23 VRHE.

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2. Molecular tunability of surface-functionalized metal nanocrystals for selective electrochemical CO₂ reduction

Chem. Sci., 2019, Advance Article

DOI: 10.1039/C9SC04439F

Researchers from Switzerland demonstrate that a molecular chemistry approach can be used to develop efficient and selective heterogeneous catalysts in the electrochemical CO₂ reduction reaction. They make imidazolium ligands to promote the CO₂RR at the surface of hybrid organic/inorganic electrode materials. They use silver nanocrystals for the inorganic component to gain insights into the tuning of the surface chemistry offered by these ligands. Modifying the electronic properties of the metal surface was crucial to obtaining the high selectivities that were achieved.

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Energy & Environmental Science (IF: 33.25)

1. A paradigm of storage batteries

Energy Environ. Sci., 2019, Advance Article

DOI: 10.1039/C9EE02356A

In this review article, the five dimensions of storage battery research are described from a chemical reaction point of view, where electrode materials and ion charge carriers represent the reactants, electrolytes provide the medium for the reaction, battery operation principles describe the configurations of the reactors, and electrode–ion chemical bonding reveals the nature of the reaction. Design of storage batteries entails a panoramic view with these five dimensions holistically considered. A deeper understanding of the chemical reaction nature of batteries will be an advantage that unifies rather than compartmentalizes a paradigm of storage battery research.

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2. Intramolecular electronic coupling in porous iron cobalt (oxy)phosphide nanoboxes enhances the electrocatalytic activity for oxygen evolution

Energy Environ. Sci., 2019, Advance Article

DOI: 10.1039/C9EE02787D

In this work, a self-templating strategy is developed to construct porous iron cobalt (oxy)phosphide (Fe–Co–P) nanoboxes as promising pre-catalysts for the oxygen evolution reaction in alkaline solution. The constructed Fe–Co–P nanoboxes exhibit excellent electrocatalytic activity and afford a current density of 10 mA cm^-2 at a small overpotential of 269 mV.

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Sustainable Energy & Fuels (IF 4.912)

1. Cerium and nitrogen doped CoP nanorod arrays for hydrogen evolution in all pH conditions

Sustainable Energy Fuels, 2019, Advance Article

DOI: 10.1039/C9SE00588A

This work reports the results of doping a CoP nanorod array host catalyst with cerium and nitrogen with the aim to produce efficient nonprecious-metal based catalysts for hydrogen evolution in all pH conditions. The electrocatalytic measurements proved that Ce and N co-doping endows CoP with remarkably improved intrinsic catalytic activity and kinetics, affording a current of 10 mA cm^-2 at the low overpotentials of 66 mV, 72 mV, and 41 mV in 0.5 M H₂SO₄, 1 M phosphate buffer, and 1 M KOH, respectively.

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2. Micropores-in-macroporous gel polymer electrolytes for alkali metal batteries

Sustainable Energy Fuels, 2019, Advance Article

DOI: 10.1039/C9SE00690G

In this work, furan and pyrrole monomers have been in situ hyper-cross-linked within the macropores of a flexible poly(vinylidene-fluoride-co-hexafluoropropylene) polymer and a gel-polymer electrolyte (GPE) was prepared by impregnation with lithium or sodium liquid electrolytes. The prepared GPEs feature (i) high ionic conductivities rivaling those of liquid electrolytes, (ii) an excellent retention of electrolyte and fast transport of Li⁺ or Na⁺ ions, (iii) a flat charge/discharge plateau, indicating no side-reaction in the operating potential window of liquid electrolytes, (iv) a low and stable overpotential over extended cycles, indicating a high ionic conductivity and stability of the SEI layers, and (v) no evidence of any short-circuiting, implying the suppression of dendrite growth.

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