In this paper, SiO aerogels were prepared by a sol-gel method. Using Ketjen Black (KB), Super P (SP) and Acetylene Black (AB) as a conductive agent, respectively, the effects of the structure and morphology of the three conductive agents on the electrochemical performance of SiO gel anode were systematically investigated and compared. The results show that KB provides far better cycling and rate performance than SP and AB for SiO anode electrodes, with a reversible specific capacity of 351.4 mA h g at 0.2 A g after 200 cycles and a stable 311.7 mA h g at 1.0 A g after 500 cycles. The enhanced mechanism of the lithium storage performance of SiO-KB anode was also proposed.
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http://dx.doi.org/10.3390/nano12040692 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
Fudan University, 2005 Huhu Rd, Shanghai, CHINA.
All-solid-state lithium metal batteries are regarded as next-generation devices for energy storage due to their safety and high energy density. The issues of lithium dendrites and poor mechanical compatibility with electrodes present the need for developing solid-state electrolytes with high stiffness and damping, but it is a contradictory relationship. Here, inspired by the superstructure of tooth enamel, we develop a composite solid-state electrolyte composed of amorphous ceramic nanotube arrays intertwined with solid polymer electrolytes.
View Article and Find Full Text PDFAdv Sci (Weinh)
January 2025
Institute for Electrochemical Energy Storage (CE-IEES), Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.
Sn-based electrodes are promising candidates for next-generation lithium-ion batteries. However, it suffers from deleterious micro-structural deformation as it undergoes drastic volume changes upon lithium insertion and extraction. Progress in designing these materials is limited to complex structures.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
School of Electromechanical and Information Engineering, PuTian University, Putian Fujian 351100, China.
As the anode material of LIBs, the SnS electrode boasts a reversible specific capacity as high as 1231 mA h g. Additionally, SnS possesses a CdI2-type layered structure with a layer spacing of 0.59 nm, which allows it to accommodate numerous lithium ions and facilitate rapid charge transfer.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
Attributable to sulfur's significant theoretical energy density, its affordability, and its environmentally friendly nature, lithium-sulfur batteries (LSBs) are recognized as advanced energy storage technologies with considerable potential. Nonetheless, the solubility and migration of polysulfides within the electrolyte substantially hinder their practical implementation. To address this issue, we developed a nitrogen-doped two-dimensional (2D) wavy carbon nanosheet material (NCN) by using the Pickering emulsion templating method.
View Article and Find Full Text PDFACS Nano
January 2025
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
Sulfurized polyacrylonitrile (SPAN) exhibits a very high cycle stability by overcoming the shuttle effect of conventional Li-S batteries. However, there are still controversies in SPAN about the bonding types of sulfur with the matrix, their critical synthesis temperature regions, and their roles in the electrochemical lithium storage reaction, seriously hindering the economical synthesis of SPAN, the optimization of performances, and the exploration of other SPAN-like alternatives. The key to solving the above problems lies in accurate measurements of the thermodynamic evolution of bonding interactions in the synthesis process as well as in the electrochemical process.
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