Compressed carbon dioxide (CO2) energy storage (CCES) has emerged as a promising large-scale energy storage technology, characterized by high energy density, moderate critical temperature, and operational flexibility. Concurrently, carbon capture, utilization and storage (CCUS) technology represents a critical pathway toward carbon neutrality for energy systems. The integration of CCES with CCUS is attracting growing research interests due to its unique potential to synergize energy and carbon flows within a closed-loop framework. This paper provides a comprehensive literature review of technological advancements in CCES and offers a perspective on its integration with CCUS. First, the fundamental working principle, system configurations, key performance indicators, and emerging demonstration projects of CCES are introduced. Subsequently, cutting-edge research and key challenges of CCES system are reviewed, focusing on optimization of CO2-based mixed working media, efficient liquefaction of low-pressure CO2, development of low-cost and safe CO2 storage facilities, enhancement of system performance through integration, and evaluation of dynamic behaviors. A central focus is placed on the integration of CCES with CCUS, highlighting how this synergy transforms CCES from a pure storage technology into a multi-functional tool for carbon management. This integration enables infrastructure sharing, dual-function storage (for energy and CO2), and improved economics. Finally, this review identifies key directions for future research, including advancing efficient system integration, developing high-precision transient simulation models and dynamic control algorithms, ensuring long-term safety of geological reservoirs under cyclic injection-extraction operations, and establishing multi-objective optimization and multi-criteria assessment frameworks to support the commercial deployment of integrated CCES-CCUS systems.

In the lush landscapes of tropical agriculture, two waste products—oyster shells from the sea and coconut shells from the trees—are being combined to solve a major headache for farmers: how to turn animal manure into high-quality compost faster and more effectively. A study recently published in Carbon Research reveals that a unique "Ca-modified biochar" can act as a powerful catalyst for the composting process. Developed by a research team at Hainan University, this new material helps transform pig manure and rice straw into stable, nutrient-rich humus, significantly boosting the quality of the final fertilizer.

Professor Zhen Zhang's research group at the State Key Laboratory of Bionic Interface Materials Science, University of Science and Technology of China, proposed and constructed a neuromorphic computing system based on a cascaded van der Waals heterostructure two-dimensional nanofluidic membrane, achieving light-driven electron-ion coupling to simulate neural signal transmission and neuromorphic visual information processing. The article was published as an open access Research Article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.

A multi-institutional team of researchers led by Virginia Tech’s Fralin Biomedical Research Institute has for the first time identified specific patterns of brain chemical activity that predict how quickly individual honey bees learn new associations, offering important insights into the biological basis of learning and decision-making.

Coral reefs are undoubtedly in crisis. Scientists have documented concerning coral bleaching events, dramatic declines in coral cover, fish and shark populations across the Caribbean over recent decades. But a critical question has remained unanswered: has the way energy flows through reef ecosystems also changed? A new study led by scientists at the Smithsonian Tropical Research Institute (STRI) and published in Nature reveals that it has, profoundly. Food chains on modern Caribbean reefs are 60-70% shorter than they were 7,000 years ago, and individual fish have lost the dietary specialisation that once sustained a complex web of energy pathways. 

Researchers have employed granulation technology to resolve the challenges of decreased CO₂ capture performance and powder elutriation in alkaline metal salt-promoted MgO sorbents. The optimized alkaline metal salt-promoted MgO sorbent pellets exhibited a CO₂ capture capacity of 11.46 mmol·g⁻¹ and a mechanical strength of 11.14 MPa. This mechanical strength was nearly three times greater than that of alkaline metal salt-promoted MgO sorbent pellets without granulation promoters. After 20 cycles, CO₂ capture capacity stabilized at 8.71 mmol·g⁻¹, while mechanical strength was maintained at 8.92 MPa.