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The electrodeposition of Cu2+ in the presence of Ni2+ in a sulfuric acid system was investigated using conventional electrochemical techniques and scanning electron microscopy. The Ni2+ had a hindering effect on the mass transfer of Cu2+, while increasing the temperature and H2SO4 concentration weakened this negative effect. The “S2−” could be hydrolyzated from thiourea and reacted with “Cu2+” and...
Rechargeable aluminum batteries are promising large-scale energy storage candidates due to the high natural earth abundance and high theoretical volumetric capacity of Al metal. However, they face many problems, including a limited lifetime, rate performance, and high electrolyte cost. Herein, we have designed a high-performance Al rechargeable battery using a graphite cathode and an economical AlCl...
Flower-like MoS2 supported on three-dimensional graphene aerogel (MoS2/GA) composite has been prepared by a facile hydrothermal method followed by subsequent heat-treatment process. Each of MoS2 microflowers is surrounded by the three-dimensional graphene nanosheets. The MoS2/GA composite is applied as an anode material of sodium-ion batteries (SIBs) and it exhibits high initial discharge/charge capacities...
The fast development of supercapacitors inspires a growing interest in inexpensive super-capacitive electrode material with high performance. Herein, we develop a Rone step method for preparing Cu3P nanocrystals by direct low-temperature phosphorization treatment of commercial copper powder. As a super-capacitive electrode material, for the first time, Cu3P nanocrystals exhibit outstanding electrochemical...
Three-dimensional fabricated Fe3O4 quantum dots/graphene aerogel materials (Fe3O4 QDs/GA) were obtained from a facile hydrothermal strategy, followed by a subsequently heat treatment process. The Fe3O4 QDs (2–5 nm) are anchored tightly and dispersed uniformly on the surface of three-dimensional GA. The as-prepared anode materials exhibit a high reversible capacity of 1078 mAh g−1 at a current density...
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) microporous membranes were prepared via thermally induced phase separation (TIPS) process. Then they were immersed in a liquid electrolyte to form polymer electrolytes. The effects of polymer content in casting solution on the morphology, crystallinity, and porosity of the membranes were studied by scanning electron microscopy (SEM), differential...
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