Carbon Neutralization最新文献

Front cover image: By serving as conductive binders, active material hosts, current collectors, and even as components of separators and interlayers, MXenes have demonstrated their adaptability and multifunctionality in different battery chemistries. Their ability to mitigate issues like dendrite growth, shuttle effects, and poor mechanical stability have significant implications for extending battery lifespan, increasing energy density, and ensuring operational safety.

Back cover image: Currently, developing advanced energy storage and conversion systems is of great significance. In the review, the strategies for realizing high-performance anode-free rechargeable batteries enabled by interfacial regulation engineering are summarized, mainly including designing of current collector, introducing of surface coating layers, modification of electrolyte, separators engineering and cathode materials regulation.

Inside front cover image: The image is related to the recycling of chicken feathers, aiming to state the energy and environmental applications of materials derived from chicken feathers. In this image, the applications, such as battery, catalysis and architectural field, surround a chicken feather, demonstrating the application potential of chicken feather waste. Besides, the clear water and beautiful environment indicate the effectiveness of recycled chicken feathers in energy and environmental fields.

Photocatalysis is an environmentally friendly technology for the utilizations of solar energy and has garnered significant attention in both scientific and industrial sectors. Developing cost-effective semiconductive materials is the core issue in photocatalysis. Bismuth-based metal-organic frameworks (Bi-MOFs) have emerged as attractive candidates in various photocatalytic applications, and Bi-MOFs derivatives further expand and consolidate their promising potential in the realm of photocatalysis. Various modification strategies including in-situ tailoring or external doping, as well as meticulous design and selection of metal nodes and organic linkers allow for fine control over the surface multifunctionality in Bi-MOF-based and derived photocatalytic composites with adjustable energy band structures and enhanced photocatalytic performance. In this review, the recent progress in the synthesis of diverse Bi-MOFs-based materials, Bi-MOFs derivatives, and their Bi-containing semiconductive composites were systemically analyzed and reviewed. The state-of-the-art research progresses in the applications of Bi-MOFs and derivatives, as well as composites in photocatalytic water splitting for hydrogen production, photodegradation of organic pollutants, and photocatalytic carbon dioxide reduction are comprehensively summarized. The relationships between structures, properties, and photocatalytic performance of Bi-based semiconductive composites are discussed in detail. In addition, the perspectives and future challenges on Bi-MOFs-based and derived materials for photocatalytic applications are also offered.

Anion exchange membrane fuel cells (AEMFCs) have been hailed as a promising hydrogen energy technology due to high energy conversion efficiency, zero carbon emission and the potential independence on scare and expensive noble metal electrocatalysts. A variety of platinum group metal (PGM)-free catalysts has been developed with superior catalytic performance to noble metal benchmarks toward cathodic oxygen reduction reactions (ORR). However, PGM electrocatalysts still dominate the anodic catalyst research because the kinetics of hydrogen oxidation reaction (HOR) are two or three orders of magnitude slower than in that acidic media. Therefore, it is urgently desirable to improve noble metal utilization efficiency and/or develop high-performance PGM-free electrocatalysts for HOR, thus promoting the real-world implementation of AEMFCs. In this review, the current research progress of electrocatalysts for HOR in alkaline media is summarized. We start with the discussion on the current HOR reaction mechanisms and existing controversies. Then, methodologies to improve the HOR performance are reviewed. Following these principles, the recently developed HOR electrocatalysts including PGM and PGM-free HOR electrocatalysts in alkaline media are systematically introduced. Finally, we put forward the challenges and prospects in the field of HOR catalysis.

Li metal batteries have been widely expected to break the energy-density limits of current Li-ion batteries, showing impressive prospects for the next-generation electrochemical energy storage system. Although much progress has been achieved in stabilizing the Li metal anode, the current Li electrode still lacks efficiency and safety. Moreover, a practical Li metal battery requires a thickness-controllable Li electrode to maximally balance the energy density and stability. However, due to the stickiness and fragile nature of Li metal, manufacturing Li ingot into thin electrodes from conventional approaches has historically remained challenging, limiting the sufficient utilization of energy density in Li metal batteries. Aiming at the practical application of Li metal anode, the current issues and their initiation mechanism are comprehensively summarized from the stability and processability perspectives. Recent advances in robust and ultra-thin Li metal anode are outlined from methodology innovation to provide an overall insight. Finally, challenges and prospective developments regarding this burgeoning field are critically discussed to afford future outlooks. With the development of advanced processing and modification technology, we are optimistic that a truly great leap will be achieved in the foreseeable future toward the industrial application of Li metal batteries.

Two-dimensional (2D) semiconductors, such as monolayer MoS₂, has emerged as a profound material platform in the post-Moore era due to their versatile applications for high-performance transistors, memories, photodetectors, neuristors, and so on. Nevertheless, the inherent defects in these atomically thin materials have given rise to significant hysteresis in their field-effect transistors (FETs), resulting in shifted threshold voltages and elevated power consumptions not only on single-device levels but also at circuitry scales. We herein report that, by vertically integrating an in-plane ferroelectric, NbOCl₂, with monolayer MoS₂ FETs, the hysteresis in both the output and transfer curves of the latter can be greatly suppressed, which we attribute to compensated electromigration currents by the polarization currents of the 2D ferroelectric. This work opens a new avenue to hysteresis-free 2D transistors without necessitating defect-free channels, thus allowing for their use in high driving-voltage scenarios such as power electronics.

The high-value utilization of blast furnace slag (BFS) and steel slag (SS) as a valuable resource in the field of carbon reduction represents a green revolution, and also is an indispensable path toward breaking through resource and environmental constraints and achieving high-quality, sustainable development through solid waste utilization in the steel industry. Achieving resource recycling while harnessing the untapped latent energy of resources and exploring their carbon sequestration capabilities has become a crucial avenue for further valorization through waste utilization. BFS and SS discharged from iron-making or steel-making furnaces carry a significant amount of latent heat, especially the calcium oxide component in SS, which gives it a unique advantage in the field of comprehensive BFS and SS utilization and carbonation-based SS utilization. This article discusses the current research status of low-carbon-waste-heat utilization in the production of microcrystalline glass, cementitious materials, functional adsorbents, and other products through front-end modification of molten BFS and SS. This report also provides an overview of carbon capture by utilizing BFS and SS, offering insights into the research directions for subsequent heat recovery, online quality adjustment, high-value utilization, and carbon sequestration using BFS and SS in the steel industry.

The extensive consumption of chicken has resulted in the emergence of a significant environmental issue in the form of chicken feather waste. As such, there is an urgent need for the development of green treatment and recycling methods for chicken feathers. Chicken feathers can serve as a type of heteroatomic doping carbon source, making them an excellent candidate for the electrode materials used in electrochemical energy devices. Furthermore, their unique structures and functional groups make them highly promising for use as adsorbents, electronics, and building materials. In this paper, we provide a summary and review of recent progress made in the use of chicken feathers for energy and environmental applications. Based on the theoretical knowledge and practical applications presented in this review, promising green recycling processes of chicken feathers can be developed. These processes can help to reduce environmental pollution and promote sustainable development.