Ammonia synthesis via the high-temperature and -pressure Haber-Bosch (HB) process at large centralized facilities has a significant contribution to the global CO2 emission. Radically new catalysts should be discovered to enable sustainable ammonia synthesis processes that can operate at much lower temperatures to relax the demand for the high pressure in the current HB process. In this manner, the

As the quest for carbon neutral processes grows with the prominence of global warming becoming clear, electrochemical CO2 reduction is proving to be a promising technique to not only remove CO2 from the atmosphere but also produce hydrocarbons in a carbon neutral way. (1) This has the additional benefit of enabling excess renewable energy from solar, hydro, and wind sources to be stored in hydrocarbons

Reasonably combining ceramic solid-state electrolytes (SSEs) and polymer-based SSEs to create versatile composite SSEs has provided new enlightenment for the development of solid-state lithium metal batteries (SSLMBs). Here, different integration ways of Li6.4La3Zr1.4Ta0.6O12 (LLZTO) with an electrospinned 3D polyacrylonitrile (PAN) nanofiber and a polymer electrolyte formed by in-situ polymerization

Li Metal Anodes

Organic radical batteries (ORBs) are a promising class of electrochemical power sources employing organic radicals as redox-active groups. This article reports on the development of a versatile on-substrate electrode setup for spectroelectrochemical Electron Paramagnetic Resonance (EPR) measurements on redox conductive polymers for ORBs. Quantitative in-operando EPR experiments performed on electrochemical

Fast ion conduction and stable interfaces are predicted to be important in the development of new electrolytes. However, many unconventional solvents for electrolytes remain challenging, although they are fast ion carriers, because of the narrow voltage of solvent oxidation and reduction. Here, we report a general solidified localized high concentration electrolyte (S-LHCE) strategy with the decoupling

Metallic potassium (K) anodes are highly desirable for high energy density batteries. However, challenges lie in uncontrollable dendrite growth and/or inevitable generation of dead K. Here, composite anodes are constructed by covering a layer of aligned carbon fiber on the surface of each metallic K anode (K-ACF). Symmetrical K-ACF//K-ACF cells can work stably without short circuit for over 600 h,

Li-rich layered oxides are promising cathode candidates for high-energy-density Li-ion batteries because of the combination of cationic and anionic redox activities. However, severe lattice oxygen loss inevitably induces irreversible Li migration in both transition metal (TM) and Li layers, which degrades the stability of the Li–O–Li configuration, resulting in serious structure distortion and capacity

We report on the reversible, electrochemical (de)fluorination of CsMnFeF6 at room temperature using a liquid electrolyte. CsMnFeF6 was synthesized via three methods (hydrothermal, ceramic, and mechanochemical), each of which yields products in a defect pyrochlore structure with varying particle sizes and phase purities. After three galvanostatic cycles, approximately one fluoride ion can be reversibly

Metallic Zn has been regarded as ideal anodes in aqueous electrolyte owing to it high theoretical capacity, intrinsic safety, low cost, and nontoxicity. However, the Zn dendrite growth and the side-reactions hindered the practical application of Zn anode. Herein, a thin and uniform three-dimensional (3D) COOH-functionalized covalent organic frameworks (COF) film (denoted as 3D-COOH-COF) is designed

Electrocatalytic CO2 reduction reaction (CO2RR) offers a promising approach to ameliorate the global warming and energy crisis. On the route to deploying this technology, tremendous efforts have been dedicated to devising remarkable electrocatalysts and electrolysis systems. While the performance indicators of CO2RR such as current density and faradaic efficiency are well developed, the energy efficiency

Two-dimensional Ruddlesden–Popper (RP) phase perovskite is gaining increasing attention for passivating the defects of the bulk absorber layer in perovskite solar cells (PSCs). However, owing to its anisotropic structural features, the RP perovskite orientation substantially influences the charge transport efficiency, and thereby the PSC performance. We demonstrate the use of highly oriented butylammonium

Perovskite solar cells (PSCs) have made incredibly fast progress in past years, pushing the efficiency approaching 26%, which is comparable to the best silicon solar cells. One of the features of PSCs that make them stand out among all photovoltaics (PVs) is high open-circuit voltage (VOC) although they are made by solution processes. Compared to other solution-processed PVs such as organic photovoltaics