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The electrochemical nitrogen reduction reaction holds great potential for ammonia production using electricity generated from renewable energy sources and is sustainable. The low solubility of nitrogen in aqueous media, poor kinetics, and intrinsic competition by the hydrogen evolution reaction result in meager ammonia production rates. Attributing measured ammonia as a valid product, not an impurity,...
Developing low‐cost and high‐performance transition metal‐based electrocatalysts is crucial for realizing sustainable hydrogen evolution reaction (HER) in alkaline media. Here, a cooperative boron and vanadium co‐doped nickel phosphide electrode (B, V‐Ni2P) is developed to regulate the intrinsic electronic configuration of Ni2P and promote HER processes. Experimental and theoretical results reveal...
Proton electrochemistry is promising for developing post‐lithium energy storage devices with high capacity and rate capability. However, some electrode materials are vulnerable because of the co‐intercalation of free water molecules in traditional acid electrolytes, resulting in rapid capacity fading. Here, the authors report a molecular crowding electrolyte with the usage of poly(ethylene glycol)...
Regulating the electronic structure and intrinsic activity of catalysts’ active sites with optimal hydrogen intermediates adsorption is crucial to enhancing the hydrogen evolution reaction (HER) in alkaline media. Herein, a heterostructured V‐doped Ni2P/Ni12P5 (V–Ni2P/Ni12P5) electrocatalyst is fabricated through a hydrothermal treatment and controllable phosphidation process. In comparison with...
Rechargeable aqueous proton batteries are promising competitors for the next generation of energy storage systems with the fast diffusion kinetics and wide availability of protons. However, poor cycling stability is a big challenge for proton batteries due to the attachment of water molecules to the electrode surface in acid electrolytes. Here, a hydrogen‐bond disrupting electrolyte strategy to boost...
Lithium–oxygen batteries (LOBs) with ultra‐high theoretical energy density (≈3500 Wh kg−1) are considered as the most promising energy storage systems. However, the sluggish kinetics during the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) can induce large voltage hysteresis, inferior roundtrip efficiency and unsatisfactory cyclic stability. Herein, hydrangea‐like NiO@Ni2P heterogeneous...
Cationic defect engineering is an effective strategy to optimize the electronic structure of active sites and boost the oxygen electrode reactions in lithium–oxygen batteries (LOBs). Herein, Ni–Fe layered double oxides enriched with cationic nickel vacancies (Ni–Fe LDO‐VNi) are first designed and studied as the electrocatalysts for LOBs. Based on the density functional theory calculation, the existence...
Proton is an ideal charge carrier for rechargeable batteries due to its small ionic radius, ultrafast diffusion kinetics and wide availability. However, in commonly used acid electrolytes, the co‐interaction of polarized water and proton (namely hydronium) with electrode materials often causes electrode structural distortions. The hydronium adsorption on electrode surfaces also facilitates hydrogen...
Synergistically coupled 1D/2D materials have great potential for energy conversion application due to its high catalytic activity. Herein, an in situ assembly strategy is developed for preparing the P, N co‐doped carbon nanotubes and Mo/MoS2(1−x−y)Px nanosheets composites (Mo/MoS2(1−x−y)Px@PNC) for hydrogen evolution reactions (HER). The PNC guarantees structural stability and fast charge transfer...
Surface chemistry is a pivotal prerequisite besides catalyst composition toward advanced water electrolysis. Here, an evident enhancement of the oxygen evolution reaction (OER) is demonstrated on a vanadate‐modified iron–nickel catalyst synthesized by a successive ionic layer adsorption and reaction method, which demonstrates ultralow overpotentials of 274 and 310 mV for delivering large current densities...
An unprecedented microwave‐based strategy is developed to facilitate solid‐phase, instantaneous delamination and decomposition of graphite fluoride (GF) into few‐layer, partially fluorinated graphene. The shock reaction occurs (and completes in few seconds) under microwave irradiation upon exposing GF to either “microwave‐induced plasma” generated in vacuum or “catalyst effect” caused by intense sparking...
Developing highly active electrocatalysts with low cost and high efficiency for hydrogen evolution reactions (HERs) is of great significance for industrial water electrolysis. Herein, a 3D hierarchically structured nanotubular copper‐doped nickel catalyst on nickel foam (NF) for HER is reported, denoted as Ni(Cu), via facile electrodeposition and selective electrochemical dealloying. The as‐prepared...
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