Advances and challenges in single-site catalysts towards electrochemical CO₂ methanation

Abstract

The electrochemical CO2 reduction into a valuable product is a sustainable and economical method towards carbon neutralization. Among the different products of electrochemical CO2 reduction reaction (CO2RR), methane is an...

The effect of electrolyte with binary solvents on improving the performance of rechargeable lithium–oxygen batteries

“…Interest in electrochemical energy storage is growing as the world moves towards a sustainable future based on renewable energy generation. [1][2][3][4] As expected, the demands for high-energy, lighter and more portable devices make Li-related batteries very sought-aer. Beyond dispute, "rocking chair" type Li ion batteries (LIBs) have turned out to be an essential part of energy chains powering electricity-consuming devices for the past few decades, including mobile electronics, electric vehicles, and utility-scale energy storage systems.…”

“…Beyond dispute, "rocking chair" type Li ion batteries (LIBs) have turned out to be an essential part of energy chains powering electricity-consuming devices for the past few decades, including mobile electronics, electric vehicles, and utility-scale energy storage systems. [3][4][5] Predictably, the energy density that the fully developed LIBs deliver (380 W h kg −1 ) is not enough to meet the demand of long-range electric vehicles. 4,6,7 The debate about what the future of energy storage will look like aer the era of LIBs has never ceased and is still in suspense.…”

“…4,6,7 The debate about what the future of energy storage will look like aer the era of LIBs has never ceased and is still in suspense. 2,3,[8][9][10][11] Since being rst introduced by Abraham and Jiang, rechargeable lithium-oxygen (or air) batteries (LOBs) with ultrahigh energy density have been accepted as the ultimate Li-related battery candidate to solve the worsening energy crisis. [12][13][14][15][16][17] Different from the state-of-the-art LIBs, the "gemlike" energy is engendered by the reversible formation/decomposition of Li 2 O 2 through a very simple reaction expressed as 2Li + O 2 # Li 2 O 2 (E 0 = 2.96 V).…”

“…3–5 Predictably, the energy density that the fully developed LIBs deliver (380 W h kg −1 ) is not enough to meet the demand of long-range electric vehicles. 4,6,7 The debate about what the future of energy storage will look like after the era of LIBs has never ceased and is still in suspense. 2,3,8–11 Since being first introduced by Abraham and Jiang, rechargeable lithium–oxygen (or air) batteries (LOBs) with ultrahigh energy density have been accepted as the ultimate Li-related battery candidate to solve the worsening energy crisis.…”

Ruthenium Single Atomic Sites Surrounding the Support Pit with Exceptional Photocatalytic Activity

“…Among them, as one of the emerging photocatalysts in recent years, single-atom catalysts (SACs) have attracted much attention owing to their unique electronic structure and excellent catalytic performance. [30][31][32][33][34][35][36] Such materials provide active sites for adsorbed CO 2 , decrease the energy barrier, and promote photogenerated charge transfer-an ideal co-catalyst for the CO 2 RR using photoelectrons transferred from the photosensitizer. [37][38][39] Synthetic strategies and microenvironmental modulation of SACs supported on carbon-based materials have been widely studied.…”