Aluminum-air batteries（AABs） are considered the most promising candidates in advanced clean energy conversion and storage due to their low density, high specific energy, and abundant aluminum resources;however, the ...
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Aluminum-air batteries（AABs） are considered the most promising candidates in advanced clean energy conversion and storage due to their low density, high specific energy, and abundant aluminum resources;however, the development of AABs is constrained by inevitable parasitic side reactions and anodic surface passivation film formation. The present work introduced an innovative hybrid corrosion inhibitor consisting of potassium stannate, decyl glucoside, and 1, 10-decanedithiol to regulate solid-liquid interface reactions in alkaline AABs. The findings indicated that the optimal hybrid corrosion inhibitor could reduce the hydrogen evolution rate from 0.2095 to 0.0406 mL cm-2min-1, achieving an inhibition efficiency of 80.62%. The surface analysis discussed in detail the evolution process of the solid-liquid interface after the introduction of the hybrid corrosion inhibitor into the battery. Experiments and theoretical calculations revealed that decyl glucoside enhanced the adsorption and coverage efficiency of the hybrid corrosion inhibitor through the ‘‘micelle solubilization” effect and optimized the structure and properties of the solid-liquid interface. This study also contributed valuable insights into the corrosion inhibition mechanism at the solid-liquid interface of alkaline AABs.
Thermoelectric materials hold promises for direct conversion of heat into electricity, making them viable power sources for electronic devices. However, their practical applications in diverse outdoor environment are ...
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Thermoelectric materials hold promises for direct conversion of heat into electricity, making them viable power sources for electronic devices. However, their practical applications in diverse outdoor environment are hindered by limited and discontinuous electricity output. In this study, we propose an all-day solar power generator to achieve highly efficient and continuous electricity generation by harnessing the synergistic effects of photoelectric-thermoelectric conversion and latent thermal energy storage. The all-day solar power generator exhibits an average open-circuit voltage of 6.8 mV during daylight and a remaining 0.9 mV during nighttime. Importantly, the all-day solar power generator achieves dependable outdoor power supply for communication transmission in diverse environmental scenarios. Our research opens a new way for highly efficient and sustainable power generation.
Augmenting the working voltage is an effective way to maximize the energy density of Ni-rich layered Li[Ni0.8Co0.1Mn0.1]O2（NCM） to approach its theoretical ***,NCM suffers from structural degradation in deep delithi...
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Augmenting the working voltage is an effective way to maximize the energy density of Ni-rich layered Li[Ni0.8Co0.1Mn0.1]O2（NCM） to approach its theoretical ***,NCM suffers from structural degradation in deep delithiation state,which is often accompanied by severe surface lattice oxygen loss and transition metal dissolution,leading to restricted cycle ***,a facile and effective surfacestrengthening strategy is proposed,in which Mn（OH）2nanoshells are uniformly grown on the NCM surface as a Li+capturer and then converted to thin spinel Li4Mn5O12layers during subsequent hightemperature *** resultant Li4Mn5O12layers can enhance cathode-electrolyte interface electrochemical stability with inhibited electrolyte corrosion and accelerated Li+*** theoretical calculations confirms that the Mn-O bonds formed at the interfaces can effectively decrease the oxygen activity,thereby further inhibiting the lattice oxygen release and structural degradation caused by the irreversible phase ***,the Li4Mn5O12-coated NCM displays high capacity retention of 80.3% and 94.9% at 1 C and 5 C compared to the pristine NCM（52.5% and 10.1%） after 200 cycles and can operate stably at 2.7-4.6 V and 60℃.The spinel Li4Mn5O12-coating demonstrates an effective route to enhance the structural/electrochemical stability of NCM for next-generation advanced lithium-ion batteries.
Retaining satisfactory electrocatalytic performance under high current density plays a crucial role in industrial water splitting but is still limited to the enormous energy loss because of insufficient exposure of ac...
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Retaining satisfactory electrocatalytic performance under high current density plays a crucial role in industrial water splitting but is still limited to the enormous energy loss because of insufficient exposure of active sites caused by the blocked mass/charge transportation at this ***,we present a freestanding lamellar nanoporous Ni-Co-Mn alloy electrode(Lnp-NCM)designed by a refined variant of the“dealloying-coarsening-dealloying”protocol for highly efficient bifunctional electrocatalyst,where large porous channels distribute on the surface and small porous channels at the *** its 3D lamellar architecture regulating,the electrocatalytic properties of the electrodes with different distances between lamellas are compared,and faster energy conversion kinetics is achieved with efficient bubble transport channels and abundant electroactive *** that the optimized sample(Lnp-NCM4)is expected to be a potential bifunctional electrocatalyst with low overpotentials of 258 and 439 mV at high current densities of 1000 and 900 mA·cm^(-2)for hydrogen and oxygen evolution reactions(HER and OER),*** overall water splitting in a two-electrode cell with Lnp-NCM4 as cathode and anode,it only needs an ultralow cell voltage of 1.75 V to produce 100 mA·cm^(-2)with remarkable long-term stability over 50 *** study on lamellar nanoporous electrode design approaches industrial water splitting requirements and paves a way for developing other catalytic systems.
The stacking structure of Nb_(2)CSe_(2),a newly synthesized layered metal carbo-selenide,was elucidated by scanning transmission electron ***,CSe2 features Se-Nb-C-Nb-Se quintuple atomic *** layers are stacked in Bern...
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The stacking structure of Nb_(2)CSe_(2),a newly synthesized layered metal carbo-selenide,was elucidated by scanning transmission electron ***,CSe2 features Se-Nb-C-Nb-Se quintuple atomic *** layers are stacked in Bernal *** this mode,Nb,CSe2 crystallizes in a trigonal symmetry(space group P3m1,No.164),with lattice parameters of a=3.33 A and c=18.20 *** structure calculations indicate that the metal carbo-selenide has Fermi energy crossing the bands where it touches to give a zero gap,indicating that it is an electronic *** evidenced experimentally,the electrical conductivity is as high as 6.6×10^(5) S·m^(-1),outperforming the counterparts in the MXene *** to the layered structure,the bonding in Nb_(2)CSe_(2) with an ionic formula of(Nb^(1.48+)),(C^(1.74-))(Se^(0.61-))_(2) is highly anisotropic,with metallic-covalent-ionic bonding in intralayers and weak bonding between *** layered nature is further evidenced by elastic properties,interlayer energy,and friction coefficient *** characteristics indicate that Nb_(2)CSe_(2) is an analog of molybdenum disulfide(MoS_(2)),which is a typical binary van der Waals(vdW)***,vibrational properties are reported,which may offer an optical identification standardfor new ternary vdW solids in spectroscopic studies,including Raman scatteringand infrared absorption.
Aqueous sodium-ion batteries（ASIBs） have garnered significant attention as promising candidates for large-scale energy storage applications. This interest is primarily due to their abundant resource availability, en...
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Aqueous sodium-ion batteries（ASIBs） have garnered significant attention as promising candidates for large-scale energy storage applications. This interest is primarily due to their abundant resource availability, environmental friendliness, cost-effectiveness, and high safety. However, their electrochemical performance is limited by the thermodynamic properties of water molecules, resulting in inadequate cycling stability and insufficient specific energy density. To address these challenges, this study developed a hydrogen-bond enhanced urea-glycerol eutectic electrolyte（UGE） to expand the electrochemical stability window（ESW） of the electrolyte and suppress corresponding side reactions. The eutectic component disrupts the original hydrogen bonding network in water, creating a new, enhanced network that reduces the activity of free water and forms a uniform, dense passivation layer on the anode. As a result,the optimized composition of UGE exhibits a broad ESW of up to 3 V（-1.44 to 1.6 V vs. Ag/AgCl）. The Prussian blue（PB）/UGE/NaTi2（PO4）3@C full cell exhibits an exceptionally long lifespan of 10,000 cycles at 10 C. This study introduces a low-cost, ultra-long-life ASIB system, utilizing a green and economical eutectic electrolyte, which expands the use of eutectic electrolytes in aqueous batteries and opens a new research horizon for constructing efficient electrochemical energy storage and conversion.
Potassium-ion batteries(PIBs)are considered as a promising energy storage system owing to its abundant potassium *** an important part of the battery composition,anode materials play a vital role in the future develop...
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Potassium-ion batteries(PIBs)are considered as a promising energy storage system owing to its abundant potassium *** an important part of the battery composition,anode materials play a vital role in the future development of ***-based anode materials demonstrate great potential for storing potassium ions(K^(+))due to their layered structure,high theoretical capacity based on the alloying reaction mechanism,and safe operating ***,the large radius of K^(+)inevitably induces severe volume expansion in depotassiation/potassiation,and the sluggish kinetics of K^(+)insertion/extraction limits its further ***,we summarize the strategies used to improve the potassium storage properties of various types of materials and introduce recent advances in the design and fabrication of favorable structural features of bismuth-based ***,this review analyzes the structure,working mechanism and advantages and disadvantages of various types of materials for potassium ***,based on this,the manuscript focuses on summarizing modification strategies including structural and morphological design,compositing with other materials,and electrolyte optimization,and elucidating the advantages of various modifications in enhancing the potassium storage ***,we outline the current challenges of bismuth-based materials in PIBs and put forward some prospects to be verified.
Hydrogel has developed into a very important platform in solar interface ***,the current hydrogel evaporators are usually three-dimensional evaporators,which will consume a lot of raw ***,a new two-dimensional hydroge...
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Hydrogel has developed into a very important platform in solar interface ***,the current hydrogel evaporators are usually three-dimensional evaporators,which will consume a lot of raw ***,a new two-dimensional hydrogel evaporator is urgently needed to alleviate this ***,a double layer hydrogel evaporator was designed by twice vacuum ***,through the arched design and the introduction of concentrated brine drainage system,the hydrogel evaporator has enhanced water transportation and tailored water transportation *** a unique drainage evaporation system greatly improves the stability of the ***,a good balance is established between photothermal conversion and water supply,and solar energy is utilized *** can remain stable in continuous evaporation for up to 12 h with an excellent evaporation rate of 2.70 kg m-2h-1under 1 sun ***,the drainage system realized the 1.8×10-10mol m-2s-1diffusion flux of concentrated *** one-time freeze-drying preparation,an arch-shaped drainage evaporator was used to prepare an evaporation area of more than 20 *** the self-made condensate collecting device in outdoor environment,the fresh water yield reaches 7.5 L *** provides a new scheme for building a new hydrogel evaporator and solving the fresh water crisis.
Furious dendritic growth and destructive parasitic reactions（hydrogen evolution reaction,corrosion,and passivation） severely degraded the development of aqueous Zn-ion batteries（AZIBs） in the field of grid and sta...
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Furious dendritic growth and destructive parasitic reactions（hydrogen evolution reaction,corrosion,and passivation） severely degraded the development of aqueous Zn-ion batteries（AZIBs） in the field of grid and stationary energy ***,trace amount of tetracycline hydrochloride（TC-HCl） additive（only 0.5 mM） is employed as a mediator to steer a stable Zn anode-electrolyte *** by theoretical calculations and experiment analysis,TC molecule with zincophilic groups can remodel the solvation sheath and disrupt H-bonds network due to its high electronegative O atoms,which effectively expedites the desolvation process and reduces the electrochemical activity of solvent ***,the TC molecules are preferentially adsorbed on the Zn electrode than active water molecules,which are beneficial for steering uniform nucleation and restricting the erosion of *** from these synergistic effects,the Zn//Zn symmetric cell containing TC-HCl additive exhibits an ultra-long cycle life of exceeding 2200 h at 1.0 mA cm-2and 1.0 mAh ***,the practical Zn//α-MnO2full cell using the modified electrolyte also demonstrates the enhanced *** study provides valuable insights into the widespread use of trace electrolyte additives and facilitates the industrialization of AZIBs with long lifespans.
Thermal barrier coatings(TBCs)are extensively utilized in aero-engines and heavy-duty gas turbines due to their outstanding properties,including low thermal conductivity,corrosion,high-temperature oxidation,and wear *...
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Thermal barrier coatings(TBCs)are extensively utilized in aero-engines and heavy-duty gas turbines due to their outstanding properties,including low thermal conductivity,corrosion,high-temperature oxidation,and wear *** rising thrust-to-weight ratio and service temperature in engine hot sections have presented a significant challenge in TBC's materials,structure,and preparation process;it is one of the current research hotspots in the aviation *** paper reviews the recent advancement in turbine blade *** focuses on the TBC's structure,deposition mechanism and the key performance evaluation indexes for TBCs applied to turbine ***,the future research field of TBCs for turbine blades is also be prospected.
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