【摘 要】
：
Developing the highly active,cost-effective,environmental-friendly,and ultra-stable nonprecious electrocatalysts for hydrogen evolution reaction (HER) is distinctly indispensable for the large-scale practical applications of hydrolytic hydrogen production
【机 构】
：
School of Materials Science & Engineering, Xi’an Key Laboratory of Green Processing for Ceramic Mate
论文部分内容阅读
Developing the highly active,cost-effective,environmental-friendly,and ultra-stable nonprecious electrocatalysts for hydrogen evolution reaction (HER) is distinctly indispensable for the large-scale practical applications of hydrolytic hydrogen production.Herein,we report the synthesis of well-integrated electrode,NiV layered double hydroxide nanosheet array grown in-situ on porous nickel foam (abbreviated as in-NiV-LDH/NF) via the facile one-step hydrothermal route.Interestingly,the valence configuration of vanadium (V) sites in such NiV-LDH are well dominated by the innovative use of NF as the reducing regulator,achieving the reassembled in-NiV-LDH/NF with a high proportion of trivalent V ions (V3+),and then an enhanced intrinsic electrocatalytic HER activity.The HER testing results show that the in-NiV-LDH/NF drives the current densities of 10 and 100 mA cm-2 at extremely low overpotentials of 114 and 245 mV withoutiR-compensation respectively,even outperforms commercial 20 wt％ Pt/C at the large current density of over 80 mA cm-2 in alkaline media,as well as gives robust catalytic durability of at least 100 h in both alkaline and neutral media.More importantly,this work provides a fresh perspective for designing bimetal (oxy) hydroxides electrocatalysts with efficient hydrogen generation.
其他文献
Non-fullerene acceptor (NFA) based organic solar cells (OSCs) are of high efficiency and low energy loss and low recombination features,which is owing to the advantage of non-fullerene acceptors.The photophysics investigation of non-fullerene solar cells,
As an efficient and environmental friendly energy storage system, lithium battery has been integrated into daily mobile life [1].Lithium batteries are becoming indispensable to all types of electronic products such as laptop computers, mobile phones, digi
Nickel-rich layered oxides have drawn sustainable attentions for lithium ion batteries owing to their higher theoretical capacities and lower cost.However,nickel-rich layered oxides also have exposed several defects for commercial application,such as unco
The application of commercial carbon fiber cloth (CFC) in energy storage equipment is limited by its low specific capacitance and energy density.By a simple one-step activation treatment,the specific surface area of CFCs with porous structure can be incre
MXene is a rising star of two-dimensional (2D) materials for energy relative applications,however,the traditional synthesis of MXene etched by hazard HF acid or LiF+HCl mixed solution is highly dangerous with the risk of splashing or pouring liquid soluti
Lithium-sulfur batteries (LSBs) hold great potential for large-scale electrochemical energy storage applications.Currently,the shuttle of soluble lithium polysulfide (LiPSs) intermediates with sluggish conversion kinetics and random deposition of Li2S hav
Industrial propane dehydrogenation (PDH) catalysts generally suffer from low catalytic stability due to the coke formation onto the catalyst surface to cover the active sites.The exploitation of an efficient catalyst with both high catalytic selectivity a
Molybdenum phosphide (MOP) catalyst has been widely applied in hydrogenation reactions,while the preparation of unsupported MoP catalysts with ultra-small size and large specific surface area (SBET) is still challenging.Herein,we have provided a facile me
Polymeric organic battery materials are promising alternatives to the transition-metal-based ones owing to their enriched chemistries.However,the flammability of organic compounds brings in serious concern on battery safety.In addition to use flame-retard