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Lithium metal stands out as an advanced anode material for next-generation rechargeable high-energy-density batteries. Nevertheless, the non-uniform behavior of Li plating/stripping causes severe dendrite growth and volume expansion, inducing rapid lifespan decay and even safety hazards. Introducing a Li host with a three-dimensional (3D) structure and interconnecting pores has been proven effective for solving these issues. In this contribution, natural wood, which possesses an exquisite 3D interconnected hierarchical porous structure, is employed as a Li host. The wood host facilitates homogenization of the electric field intensity near the Li anode, thereby regulating the homogeneity during Li plating/stripping. As demonstrated in Li‖Cu half cells, the wood host enables 66 cycles with a coulombic efficiency retention of 80%, surpassing the mere 25 cycles achievable without the host. Furthermore, the wood/Li composite anode exhibits reduced polarizations and extended cycling lifespans in both Li‖LFP and Li‖S full coin cells. Leveraging the unique characteristics of the natural wood structure, an all-wood-based Li‖S full coin cell is also assembled. This study not only illuminates the promise of wood as a material for optimizing Li anode performance, but also offers valuable insights for the design of structures for materials used in rechargeable batteries. [ABSTRACT FROM AUTHOR]

With the development of urban industry and technology, environmental issues have raised increasing concerns toward gas monitoring. Flexible, portable, and low-cost sensors for detecting gas analytes in real-time have emerged as next-generation gas analytical devices. Among them, flexible chemiresistive gas sensors stand out due to their high operability, intuitive response signal and because the conditions required are not harsh. As a result, flexible chemiresistive gas sensors are endowed with huge potential toward a wide range of applications and should be paid more attention. This review mainly covers four types of flexible chemiresistive gas sensors based on different sensing materials, including metal oxide semiconductor (MOX)-based, graphene-based, MXene-based, and polymer-based gas sensors. The definition and sensing mechanisms of gas sensing materials are first combed. Recent advances of flexible chemiresistive gas sensors are summarized to afford design strategies toward different sensing materials, and the current applications are also introduced. Finally, challenges and prospects for flexible chemiresistive gas sensors are further discussed. [ABSTRACT FROM AUTHOR]

Food safety and authenticity analysis play a pivotal role in guaranteeing food quality, safeguarding public health, and upholding consumer trust. In recent years, significant social progress has presented fresh challenges in the realm of food analysis, underscoring the imperative requirement to devise innovative and expedient approaches for conducting on‐site assessments. Consequently, cellulose paper‐based devices (PADs) have come into the spotlight due to their characteristics of microchannels and inherent capillary action. This review summarizes the recent advances in cellulose PADs in various food products, comprising various fabrication strategies, detection methods such as mass spectrometry and multi‐mode detection, sampling and processing considerations, as well as applications in screening food safety factors and assessing food authenticity developed in the past 3 years. According to the above studies, cellulose PADs face challenges such as limited sample processing, inadequate multiplexing capabilities, and the requirement for workflow integration, while emerging innovations, comprising the use of simplified sample pretreatment techniques, the integration of advanced nanomaterials, and advanced instruments such as portable mass spectrometer and the innovation of multimodal detection methods, offer potential solutions and are highlighted as promising directions. This review underscores the significant potential of cellulose PADs in facilitating decentralized, cost‐effective, and simplified testing methodologies to maintain food safety standards. With the progression of interdisciplinary research, cellulose PADs are expected to become essential platforms for on‐site food safety and authentication analysis, thereby significantly enhancing global food safety for consumers. [ABSTRACT FROM AUTHOR]