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All‐solid‐state lithium‐ion batteries (ASSLBs) with inorganic solid‐state electrolytes (ISEs) have great potential for enhanced safety, high energy density, and long lifetime. Numerous works have focused on designing high‐conductive materials and (electro)chemically stable interfaces, contributing to the rapid development of ASSLBs. However, the lack of a comprehensive and in‐depth understanding of the intrinsic ionic conduction and failure mechanisms of ISEs in ASSLBs limits their further improvement. In this work, the analysis of the ionic transport mechanisms is focused in the different crystalline states of ISEs including bulk crystal, grain boundary, and amorphousness. Various failure mechanisms of ISEs concerning structure degradation, mechanical pulverization, and lithium dendrite penetration that trigger the capacity attenuation of cells are also discussed. This work is wraped up by providing the perspective on how to optimize the electrochemical performance of ASSLBs, which can, with the hope, pave the way for achieving the commercialization of ASSLBs. [ABSTRACT FROM AUTHOR]

Lithium‐sulfur batteries utilizing sulfide solid electrolytes hold considerable potential for achieving both high energy density and enhanced safety. However, the substantial volume changes experienced by sulfur during cycling result in mechanical stress accumulation, leading to mechanical degradation and thereby degrading overall electrochemical performance. In this study, a stress‐buffer strategy is proposed to address this challenge by engineering a mechanically resilient crosslinked structure for the composite sulfur cathode. This structure is accomplished through the integration of a highly flexible thermoplastic elastomer (ethylene vinyl acetate, EVA), which enables stress release during sulfur volume variations by the repeated stretching and shrinking of EVA, thereby maintaining stable ionic/electronic diffusion channels within the electrode. By virtue of the mechanically stable architecture, the stress evolution experienced by the entire sulfur electrode is substantially reduced, witnessing a remarkable decrease of ≈33.7%. Consequently, the S‐EVA composite cathode demonstrates exceptional electrochemical performance, especially cycling stability. Notably, the S‐EVA composite cathode, with a high loading of 7.5 mg cm−2, exhibits stable cycling performance close to 3.0 mAh cm−2 within 50 cycles. This work not only offers novel insights into mitigating the mechanical stress within the electrode but also paves the way for developing durable high‐performance all‐solid‐state batteries. [ABSTRACT FROM AUTHOR]

Summary A novel hybrid‐multiplexed fifteen‐switch converter (HM‐15SC) topology, which can simultaneously output a set of three‐phase AC and three sets of DC, is proposed to address the problems of a single type of power electronic converter and the complexity of coordinated control of AC/DC hybrid systems for smart grid. In this paper, we conduct a detailed analysis of the topology and operating principles of HM‐15SC. This includes an examination of the converter's effective switching states in relation to output voltage, current paths, and maximum voltage stress. In addition, a modulation strategy combining single‐leg independent model prediction current control (SL‐MPCC) and time‐sharing cooperative (TSC) ideas is proposed to establish a single‐leg AC current prediction model, which effectively reduces the prediction arithmetic under the premise of realizing three‐leg independent prediction control and optimal control of AC/DC hybrid outputs. Finally, we verify the feasibility and superiority of the proposed HM‐15SC topology and its modulation strategy using the Typhoon HIL 402 platform. [ABSTRACT FROM AUTHOR]