University of Science and Technology Beijing

About: University of Science and Technology Beijing is a education organization based out in Beijing, China. It is known for research contribution in the topics: Microstructure & Alloy. The organization has 41558 authors who have published 44473 publications receiving 623229 citations. The organization is also known as: Beijing Steel and Iron Institute.

High-Performance Aluminum-Ion Battery with CuS@C Microsphere Composite Cathode

Abstract: On the basis of low-cost, rich resources, and safety performance, aluminum-ion batteries have been regarded as a promising candidate for next-generation energy storage batteries in large-scale energy applications. A rechargeable aluminum-ion battery has been fabricated based on a 3D hierarchical copper sulfide (CuS) microsphere composed of nanoflakes as cathode material and room-temperature ionic liquid containing AlCl3 and 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) as electrolyte. The aluminum-ion battery with a microsphere electrode exhibits a high average discharge voltage of ∼1.0 V vs Al/AlCl4–, reversible specific capacity of about 90 mA h g–1 at 20 mA g–1, and good cyclability of nearly 100% Coulombic efficiency after 100 cycles. Such remarkable electrochemical performance is attributed to the well-defined nanostructure of the cathode material facilitating the electron and ion transfer, especially for chloroaluminate ions with large size, which is desirable for aluminum-ion battery applications.

Wide-gap non-fullerene acceptor enabling high-performance organic photovoltaic cells for indoor applications

Abstract: Organic photovoltaic cells are potential candidates to drive low power consumption off-grid electronics for indoor applications. However, their power conversion efficiency is still limited by relat ...

A Novel Aluminum‐Ion Battery: Al/AlCl3‐[EMIm]Cl/Ni3S2@Graphene

Abstract: Due to an ever-increasing demand for electronic devices, rechargeable batteries are attractive for energy storage systems. A novel rechargeable aluminum-ion battery based on Al3+ intercalation and deintercalation is fabricated with Ni3S2/graphene microflakes composite as cathode material and high-purity Al foil as anode. This kind of aluminum-ion battery comprises of an electrolyte containing AlCl3 in an ionic liquid of 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl). Galvanostatic charge/discharge measurements have been performed in a voltage range of 0.1–2.0 V versus Al/AlCl4 −. An initial discharge specific capacity of 350 mA h g−1 at a current density of 100 mA g−1 is achieved, and the discharge capacity remains over 60 mA h g−1 and coulombic efficiency of 99% after 100 cycles. Typically, for the current density at 200 mA g−1, the initial charge and discharge capacities are 300 and 235 mA h g−1, respectively. More importantly, it should be emphasized that the battery has a high discharge voltage plateau (≈1.0 V vs Al/AlCl4 −). These meaningful results represent a significant step forward in the development of aluminum-ion batteries.