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of lithium dendrites, and improved sulfur utilization, demonstrating excellent capacity and cycling stability,” said prof. Negishi. The battery showed a high reversible specific capacity of 1535.4 mA h g−1 for the first cycle at 0.2 A g−1 and an exceptional rate capability of 887 mA h g−1 at 5 A g−1. Additionally, the capacity retained after 1000 cycles at 5 A g−1 was 558.5 mA h g−1. These results highlight the advantages of using metal nanoclusters in LSBs. They include improved energy density, longer cycle life, enhanced safety features, and a reduced environmental impact of LSBs, making them more environment-friendly and competitive with other energy storage technologies.
suitable applications for metal nanoclusters have been suggested, there are still no examples of their practical applications. Now, in a latest collaborative
study published in the journal Small, a team of researchers from Japan and China, led by professor Yuichi Negishi of Tokyo University of Science (TUS), has harnessed the surface binding property and redox activity of
platinum (Pt)-doped gold (Au) nanoclusters, Au24Pt(PET)18 (PET: phenylethanethiolate, SCH2CH2Ph), as a high-efficiency electrocatalyst in LSBs. The work is co- authored by assistant professor Saikat Das from TUS and professor Deyan He and junior associate professor Dequan Liu from Lanzhou University, China.
The researchers prepared composites of
Au24Pt(PET)18 and graphene (G) nanosheets with a large specific surface area, high porosity, and conductive network, using them to develop a battery separator that accelerates the electrochemical kinetics in the LSB.
“The LSBs assembled using the Au24Pt(PET)18@G-based separator arrested the shuttling LiPSs, inhibited the formation
“LSBs with metal nanoclusters may find applications in electric vehicles, portable electronics, renewable energy storage, and other industries requiring advanced energy storage solutions. In addition, this study is expected to pave the way for all-solid-state LSBs with more novel functionalities,” added prof. Negishi.
https://www.tus.ac.jp/en/ Supplying terminal devices via the EMC-compliant network connection W
ürth Elektronik has presented its RD022 reference design “GB- PoE+ Ethernet USB
adapter,” which is now freely available at
www.we-online.de/RD022. Devices networked via Ethernet usually depend on a separate power supply, however, if these terminal devices get by with low power consumption, then Power over Ethernet (PoE) is an alternative where data transmission and power supply are achieved via a network cable. Devices with low power consumption, like IP cameras, VoIP phones, WiFi routers, network switches, LED lighting or access
systems, are suitable for power supply through the Ethernet line. Würth Elektronik’s new RD022 reference design, which can provide up to 25W of power, shows how this can work while still maintaining EMC compliance. The ‘GB-PoE+ Ethernet USB adapter’ is based on the reference design of a 1 Gbps Ethernet USB adapter without PoE functionality, as described in detail under RD016 (
www.we-online.de/RD016). The ‘GB-PoE+ Ethernet USB adapter’ provides three interfaces: a USB Type-C interface (USB 3.1), an RJ45 1 Gbps Ethernet interface with integrated PoE functionality, and a connection for a DC/DC converter with an adjustable output voltage of 6V to 18V
Equipment (PSE) and the
and a maximum
output power of 25W. The board makes it easier for customers to get started with PoE technology. The reference design familiarizes users with the technology, signals, interface structure, power-up and PoE detection of a Gigabit PoE interface. It provides the hardware design for Power Sourcing
Powered Device (PD) and explains the conception and construction of the adapter board: current flow, USB controller and interface, Ethernet interface as well as power supply (PoE). Special importance placed on the EMC- compliant design highlights its significance.
https://www.we-online.com/en
www.cieonline.co.uk
Components in Electronics
October 2023 9
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