Carbon-Coated Graphene/Antimony Composite with a Sandwich-Like Structure for Enhanced Sodium Storage

J. Mater. Chem. A, 2017, Accepted ManuscriptDOI: 10.1039/C7TA06770D, CommunicationJinzuan Wang, Jun Yang, Wenyan Yin, Shin-Ichi HiranoSodium-ion batteries (SIBs) are considered to be one of the most promising alternatives to lithium-ion batteries (LIBs) for energy storage due to the low cost and large abundance…

Hierarchically Porous, Ultrathick, “Breathable” Wood-Derived Cathode for Lithium-Oxygen Batteries

Abstract In this work, a hierarchically porous and ultrathick “breathable” wood-based cathode for high-performance Li-O2 batteries is developed. The 3D carbon matrix obtained from the carbonized and activated wood (denoted as CA-wood) serves as a superconductive current collector and an ideal porous host…

Hydrogen Flux through Size Selected Pd Nanoparticles into Underlying Mg Nanofilms

Abstract The application of Mg for hydrogen storage is hindered due to the slow absorption of hydrogen in Mg films. Herein, the hydrogenation process is explored theoretically using density functional theory calculations, and energy barriers are compared for hydrogen diffusion through Pd nanoparticle/Mg…

From Surface ZrO2 Coating to Bulk Zr Doping by High Temperature Annealing of Nickel-Rich Lithiated Oxides and Their Enhanced Electrochemical Performance in Lithium Ion Batteries

Abstract One of the major hurdles of Ni-rich cathode materials Li1+x(NixCozMnz)wO2, y > 0.5 for lithium-ion batteries is their low cycling stability especially for compositions with Ni ≥ 60%, which suffer from severe capacity fading and impedance increase during cycling at elevated temperatures…

20 technologies to change the world

Technology has changed society almost out of recognition. And while there may be some nostalgia for simpler times, the ‘realtimers’ of today are aghast at our primitive past and relish the changes that lie ahead. What, though, are these changes? Engineering consultancy Arup…

Enhanced hydrogen production from ammonia borane using controlled plasmonic performance of Au nanoparticles deposited on TiO2

J. Mater. Chem. A, 2017, Accepted ManuscriptDOI: 10.1039/C7TA07264C, PaperSeongwon Jo, Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Wonyong Choi, Hiromi YamashitaAmmonia borane (AB) is a hydrogen storage material which can produce three equivalent moles of H2 gas by a hydrolytic decomposition reaction in the…

Superior Potassium Ion Storage via Vertical MoS2 “Nano-Rose” with Expanded Interlayers on Graphene

Abstract Potassium has its unique advantages over lithium or sodium as a charge carrier in rechargeable batteries. However, progresses in K-ion battery (KIB) chemistry have so far been hindered by lacking suitable electrode materials to host the relatively large K+ ions compared to…

Cathodes: Bifunctional MOF-Derived Carbon Photonic Crystal Architectures for Advanced Zn–Air and Li–S Batteries: Highly Exposed Graphitic Nitrogen Matters (Adv. Funct. Mater. 36/2017)

In article number 1701971, Xudong Chen, Dingshan Yu, and co-workers develop a metal organic framework derived nitrogen-rich carbon photonic crystal architecture with record-high total pore volume, ultra-large surface area, and hierarchical macro-meso-microporosity. Sufficient exposure and accessibility of graphitic nitrogen make a bifunctional cathode…

Unveiling Active Sites for the Hydrogen Evolution Reaction on Monolayer MoS2

Abstract Here, the hydrogen evolution reaction (HER) activities at the edge and basal-plane sites of monolayer molybdenum disulfide (MoS2) synthesized by chemical vapor deposition (CVD) are studied using a local probe method enabled by selected-area lithography. Reaction windows are opened by e-beam lithography…

Nonaqueous Hybrid Lithium-Ion and Sodium-Ion Capacitors

Abstract Hybrid metal-ion capacitors (MICs) (M stands for Li or Na) are designed to deliver high energy density, rapid energy delivery, and long lifespan. The devices are composed of a battery anode and a supercapacitor cathode, and thus become a tradeoff between batteries…