Molybdenum disulfide (MoS2), which possesses a layered structure and exhibits a high theoretical capacity, is currently under intensive research as an anode candidate for next generation of Li‐ion batteries. However, unmodified MoS2 suffers from a poor cycling stability and an inferior rate capability upon charge/discharge processes. Herein, a unique nanocomposite comprising MoS2 nanothorns epitaxially grown on the backbone of carbon nanotubes (CNTs) and coated by a layer of amorphous carbon is synthesized via a simple method. The epitaxial growth of MoS2 on CNTs results in a strong chemical coupling between active nanothorns and carbon substrate via CS bond, providing a high stability as well as a high‐efficiency electron‐conduction/ion‐transportation system on cycling. The outer carbon layer can well‐accommodate the structural strain in the electrode upon lithium‐ion insertion/extraction. When employed as an anode for lithium storage, the prepared material exhibits remarkable electrochemical properties with a high specific capacity of 982 mA h g−1 at 0.1 A g−1, as well as excellent long‐cycling stability (905 mA h g−1 at 1 A g−1 after 500 cycles) and superior rate capability, confirming its potential application in high‐performance Li‐ion batteries.

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A novel double perovskite Sr2FeMo2/3Mg1/3O6−δ is prepared and characterized as an anode material for solid oxide fuel cells (SOFCs). X‐ray diffraction refinement reveals that Mg and Mo cations locate separately in two different B sites (B and B′ in A2BB′O6) while Fe occupies both B and B′ sites, forming the lattice structure with the form of Sr2(Mg1/3Fe2/3)(Mo2/3Fe1/3)O6−δ. The inactive element Mg doping not only endows the material with excellent redox structural stability but also triggers the creation of antisite defects in the crystal lattice, which provide the material with excellent electrochemical activity. The anode performance of Sr2FeMo2/3Mg1/3O6−δ is characterized in an La0.8Sr0.2Ga0.8Mg0.2O3−δ electrolyte supported cell with La0.58Sr0.4Fe0.8Co0.2O3−δ cathode. A peak power density of 531, 803, 1038, and 1316 mW cm−2 at 750, 800, 850, and 900 °C, respectively, is achieved in humidified H2. The Sr2FeMo2/3Mg1/3O6−δ shows suitable thermal expansion coefficient (16.9(2) × 10−6 K−1), high electrical conductivity, and good tolerance to carbon deposition and sulfur poisoning. First‐principle computations demonstrate that the presence of FeBOFeB′ bonds can promote the easy formation and fast migration of oxygen vacancies in the lattice, which are the key to affecting the anode reaction kinetics. The excellent overall performance of Sr2FeMo2/3Mg1/3O6−δ compound makes it a promising anode material for SOFCs.

B-doped 3C-SiC nanowires have been synthesized via a facile and simple carbothermal reduction method at 1500 °C for 2 h in a flowing purified argon atmosphere. The obtained nanowires possess a single crystalline and finned microstructure with fins about 100-200 nm in diameter and 10-20 nm in thickness. The diameter of the inner core stem is about 80 nm on average. Due to the smaller band gap, the finned microstructure and the single crystalline nature, the B-doped 3C-SiC nanowires demonstrate efficient activity as high as 108.4 μmol h(-1) g(-1) for H2 production, which is about 20 times higher than that of 3C-SiC nanowhiskers and 2.6 times higher than the highest value reported in the literature for SiC materials.

13 Cobalt-free perovskite-type mixed ionic and electronic conductor (MIEC) is of 14 technological and economic importance in many energy related applications. In this work, a new 15 group of Fe-based perovskite MIEC with BaFe 1-x Gd x O 3-δ (0.025≤x≤0.20) compositions was 16 developed for the application in oxygen permeation membrane. Slight Gd doping (x=0.025) can 17 stabilize the cubic structure of BaFe 1-x Gd x O 3-δ perovskite. The Gd substitution of BaFe 1-x Gd x O 3-δ 18 materials increases the structural and chemical stability in atmosphere containing CO 2 and H 2 O, 19and decreases the thermal expansion coefficient. The BaFe 0.975 Gd 0.025 O 3-δ membrane exhibits fast 20 oxygen surface exchange kinetics and high bulk diffusion coefficient, and achieves a high oxygen 21 2 permeation flux of 1.37 mL cm -2 min -1 for 1 mm thick membrane at 950 o C under Air/He oxygen 1 gradient, which can maintain stable at 900 o C for 100 h. Compared to the pristine BaFeO 3-δ and the 2 well-studied Ba 0.95 La 0.05 FeO 3-δ membranes, lower oxygen permeation activation energy and higher 3 oxygen permeability are obtained for the 2.5 at. % Gd doped material, which might be attributed to 4 the expanded lattice by doping large Gd 3+ cations and limited negative effect from strong Gd-O 5 bond. A combination study of first principle calculation and experimental measurements was 6 further conducted to advance the understanding of Gd effects on oxygen migration behavior in 7BaFe 1-x Gd x O 3-δ . These findings are expected to provide guidelines for the material design of high 8 performance MIECs. 9