Packages of Care for Alcohol Use Disorders in Low- And Middle-Income Countries

In the fourth in a series of six articles on packages of care for mental disorders in low- and middle-income countries, Vivek Benegal and colleagues discuss the treatment of alcohol use disorders

Bringing Experiential Learning into the Classroom: ‘Fireside Talks’

‘Fireside Talks’ are student-business co-curriculum interactions that offer students the opportunity to relate theoretical knowledge to real-life business issues being experienced by organisations, and to make recommendations to them within a warm and intimate environment. Such interactions strengthen students’ understanding of course content, whilst increasing their commercial awareness, confidence, and employability. The format is flexible across subject areas and organisation types

Facile electrodeposition of high-density CuCo<inf>2</inf>O<inf>4</inf> nanosheets as a high-performance Li-ion battery anode material

High-density CuCo2O4 nanosheets are grown on Ni foam using electrodeposition followed by air annealing for a Li-ion battery anode. The anode exhibits a high discharge capacity of 1244 mAh/g at 0.1 A/g (82% coulombic efficiency) and excellent high-rate performance with 95% capacity retention (1100 mAh/g after 200 cycles at 1 A/g). The outstanding battery performance of the CuCo2O4 anode is attributed to its binder-free direct contact to the current collector and high-density nanosheet morphology. The present experimental findings demonstrate that the electrodeposited binder-free CuCo2O4 material may serve as a safe, low-cost, long-cycle life anode for Li-ion batteries

Self-assembled two-dimensional copper oxide nanosheet bundles as an efficient oxygen evolution reaction (OER) electrocatalyst for water splitting applications

A high activity of a two-dimensional (2D) copper oxide (CuO) electrocatalyst for the oxygen evolution reaction (OER) is presented. The CuO electrode self-assembles on a stainless steel substrate via chemical bath deposition at 80 °C in a mixed solution of CuSO4 and NH4OH, followed by air annealing treatment, and shows a 2D nanosheet bundle-type morphology. The OER performance is studied in a 1 M KOH solution. The OER starts to occur at about 1.48 V versus the RHE (η = 250 mV) with a Tafel slope of 59 mV dec-1 in a 1 M KOH solution. The overpotential (η) of 350 mV at 10 mA cm-2 is among the lowest compared with other copper-based materials. The catalyst can deliver a stable current density of >10 mA cm-2 for more than 10 hours. This superior OER activity is due to its adequately exposed OER-favorable 2D morphology and the optimized electronic properties resulting from the thermal treatment

Nanoporous CuCo <inf>2</inf> O <inf>4</inf> nanosheets as a highly efficient bifunctional electrode for supercapacitors and water oxidation catalysis

Efficient and low‐cost multifunctional electrodes play a key role in improving the performance of energy conversion and storage devices. In this study, ultrathin nanoporous CuCo 2 O 4 nanosheets are synthesized on a nickel foam substrate using electrodeposition followed by air annealing. The CuCo 2 O 4 nanosheet electrode exhibits a high specific capacitance of 1473 F g ─1 at 1 A g ─1 with a capacity retention of ∼93% after 5000 cycles in 3 M KOH solution. It also works well as an efficient oxygen evolution reaction electrocatalyst, demonstrating an overpotential of 260 mV at 20 mA cm ─2 with a Tafel slope of ∼64 mV dec ─1 . in 1 M KOH solution, which is the lowest reported among other copper-cobalt based transition metal oxide catalysts. The catalyst is very stable at >20 mA cm ─2 for more than 25 h. The superior electrochemical performance of the CuCo 2 O 4 nanosheet electrode is due to the synergetic effect of the direct growth of 2D nanosheet structure and a large electrochemically active surface area associated with nanopores on the CuCo 2 O 4 nanosheet surface