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Silicon (Si) is considered an ideal candidate for the next generation of lithium-ion batteries owing to its high specific capacity, low lithiation/delithiation potential, and abundance. However, its extensive volume expansion engenders electrode structure deterioration and cycle life truncation, substantially hindering its practical utility. In this investigation, we fashioned porous silicon via the etching of micron-sized aluminium–silicon alloy, and subsequently, porous silicon@hard carbon (PSi@C) composites were meticulously crafted through a sequence involving high-temperature pyrolysis after methyl acrylate (MA) suspension polymerization coating and a Soxhlet extraction pore-forming procedure. Characterization through scanning electron microscopy (SEM) revealed the composite material's abundance of pores and the presence of a fish-scale-like carbon framework. This unique architecture adeptly mitigates the stresses stemming from silicon's volumetric expansion, thus rectifying the issues associated with silicon's poor electronic conductivity and carbon materials' limited capacity. Simultaneously, it utilizes silicon's high specific capacity and carbon's extended cycle stability. Remarkably, after 300 cycles at 0.5 A g−1, the PSi@C electrode exhibited a capacity retention rate as high as 74.4% (652 mA h g−1). Even under a high current of 2 A g−1, the rate test still revealed a reversible capacity of 465 mA h g−1. These findings indicate exemplary long-cycle and rate performance characteristics, underscoring significant potential for research and application in lithium battery energy storage. [ABSTRACT FROM AUTHOR]

Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO2/Au/CdS QDs system, a facile and sensitive photoelectrochemical biosensor was developed for lead ion assay and a low detection limit of 0.13 pM was obtained. [ABSTRACT FROM AUTHOR]

Herein, a novel label-free photoelectrochemical (PEC) sensing platform with near-zero background noise was developed for M.SssI CpG methyltransferase (M.SssI MTase) activity assay based on a new Schottky junction of Bi2S3/Ti3C2 nanosheets. The proposed PEC sensor exhibited a low detection limit and a high signal-to-noise ratio for M.SssI MTase assay. [ABSTRACT FROM AUTHOR]

Herein, a new electrochemical aptamer-based biosensor for highly sensitive assay of thrombin has been developed based on the dual-signaling electrochemical ratiometric method and the DNA walker strategy, and shows a low detection limit of about 56 fM. [ABSTRACT FROM AUTHOR]

Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO 2 /Au/CdS QDs system, a facile and sensitive photoelectrochemical biosensor was developed for lead ion assay and a low detection limit of 0.13 pM was obtained.

Herein, a novel label-free photoelectrochemical (PEC) sensing platform with near-zero background noise was developed for M.SssI CpG methyltransferase (M.SssI MTase) activity assay based on a new Schottky junction of Bi 2 S 3 /Ti 3 C 2 nanosheets. The proposed PEC sensor exhibited a low detection limit and a high signal-to-noise ratio for M.SssI MTase assay.