Toward Complete CO₂ Electroconversion: Status, Challenges, and Perspectives

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Electrocatalytic conversion of carbon dioxide (CO 2 ) into valuable carbon‐based fuels and chemicals represents a promising approach to closing the cycle setting circular economy. Nevertheless, for current electrocatalytic CO reduction reaction (ECO RR) systems, realizing 100% with simultaneously high overall rate (i.e., single‐pass conversion) Faradaic efficiency (FE) remains significant challenge. Enhancing often results in decrease FE, conversely, improving FE may limit rate. Metal–CO (M–CO batteries functions face similar challenges, particularly reversible M–CO batteries, which do not accomplish net because nearly all RR products are reoxidized during subsequent charging process. Such system neutrality poses substantial challenges. This perspective provides an in‐depth analysis state‐of‐the‐art ECO systems alongside main strategies employed address their respective The critical importance achieving both is underscored practical applications effectively close cycle. Furthermore, strategic roadmap that outlines future research directions presented, thereby facilitating advancement comprehensive electroconversion technologies.

Language: Английский

High‐Voltage Cathode Materials for Sodium‐Ion Batteries: Advances and Challenges

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract Sodium‐ion batteries (SIBs) gain attention as a promising, cost‐effective, and resource‐abundant alternative, especially for large‐scale energy storage. Cathode materials play pivotal role in improving the electrochemical performance of SIBs, with high‐voltage cathodes providing enhanced density rate capacity, making SIBs suitable high‐power applications. Common cathode materials, such layered transition metal oxides, polyanionic compounds, Prussian blue analogs, each offer unique benefits. However, these face challenges under conditions, phase transitions, cation migration, oxygen loss, electrolyte degradation. This review discusses strategies to address challenges, including elemental doping, surface coatings, modified synthesis methods, interfacial adjustments, all aimed at enhancing stability materials. Here also explores how full‐cell design optimizations can further improve power density. By analyzing material degradation failure modes, this offers insights into development stable, high‐performance better safety broader application potential storage technologies.

Language: Английский