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...
详细信息
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.
Electroreduction of CO2for formic acid production has been regarded as an efficient option for ***, under high current, achieving high selectivity for formic acid is challenging, which cannot meet industrial demands. ...
详细信息
Electroreduction of CO2for formic acid production has been regarded as an efficient option for ***, under high current, achieving high selectivity for formic acid is challenging, which cannot meet industrial demands. Herein, we reported a type of Bi/In（OH）3（BIO） heterojunction reconstructed from Bi2S3/In（OH）3during electrochemical process, in which In（OH）3was applied to modulate the electronic structure of *** strategy efficiently enhanced the *OCHO intermediates adsorption and lead to a decent selectivity towards formic acid under high current density. BIO displays faraday efficiency of formic acid beyond 95 % across a wide range current density of 200–400 m A cm-2, where the highest value reached 97.7 % at 400 m A cm-2. This work clarified the mechanism of CO2electroreduction to HCOOH on heterojunction, guiding the design of advanced catalysts.
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...
详细信息
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...
详细信息
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...
详细信息
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 *...
详细信息
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.
The photochemical and photophysical properties of near-infrared(NIR)dyes are significantly influenced by their aggregation state and mesoscopic ***,beyond chemical synthesis,the regulation mechanisms for the propertie...
详细信息
The photochemical and photophysical properties of near-infrared(NIR)dyes are significantly influenced by their aggregation state and mesoscopic ***,beyond chemical synthesis,the regulation mechanisms for the properties of NIR dyes,particularly with respect to photothermal properties of the aggregates,are not yet fully ***,we investigate the photothermal behaviors of croconaine-based(CroA)NIR dyes containing dipeptide or amino acids *** introduction of hydrogen bonding promotesπ-πstacking of croconaine center,which can efficiently regulate aggregation states and assembly structures in *** laser irradiation,CroA aggregates undergo aggregation-dissociation transition,the in-situ monomer generation process regulates two parameters of photothermal performance:heating rates and plateau photothermal *** study reveals the regulation effect of non-covalent bonding interactions on CroA aggregates,highlighting supramolecular assembly strategy not only facilitates to construct of photothermal nanomaterials with well-defined structures,but also provides an alternative and effective method for regulating photothermal performance of NIR dyes.
Owing to the significant potential of alkalin seawater electrolysis for converting surplus power into eco friendly hydrogen fuel,we developed bifunctional elec trodes that integrate low-crystalline NiFe LDHs and amorp...
详细信息
Owing to the significant potential of alkalin seawater electrolysis for converting surplus power into eco friendly hydrogen fuel,we developed bifunctional elec trodes that integrate low-crystalline NiFe LDHs and amorphous NiFe alloy on a Ni foam(NF)substrate to enhance this *** by the battery-like charac teristics of NiFe LDHs,an anti-corrosive and active oute layer of NiFe^(vac)OOH continuously forms over time in th hybrid on the anode for the oxygen evolution reaction(OER),effectively mitigating powder shedding caused by corrosion induced by multiple anions in *** while,the strong bond between the hybrid and the NF substrate maintains intact hybrid coatings to ensure a rel atively high overall conductivity of the electrodes,signif icantly reducing the negative effects of structura degradation during the OER and hydrogen evolution reaction(HER),as well as the accumulation of contami nants on the electrode *** long-term tests,thes bifunctionalhybridelectrodesmaintained stable performance,even at a high current density o500 mA·cm^(-2).The cell voltage increased by only 88 m V over 1000 h to 1.970 V during saline electrolysis and by103 mV over 500 h to 2.062 V during seawater electroly ***,this study provides valuable insights into efficient and stable seawater electrolysis using NiFe LDHs–NiFe alloy hybrids.
Spinel LiNi_(0.5-x)Mn_(1.5+x)O_(4)(LNMO)has attracted intensive interest for lithium-ion battery due to its high voltage and high energy ***,severe capacity fade attributed to unstable surface structure has hampered i...
详细信息
Spinel LiNi_(0.5-x)Mn_(1.5+x)O_(4)(LNMO)has attracted intensive interest for lithium-ion battery due to its high voltage and high energy ***,severe capacity fade attributed to unstable surface structure has hampered its *** vacancies(OVs)tend to occur in the surface of the material and lead to surface structure reconstruction,which deteriorates the battery performance during electrochemical ***,we utilize high-temperature-shock(HTS)method to synthesize LNMO materials with fewer surface *** calcination drives lower surface OVs concentration,reducing the content of Mn^(3+)and surface reconstruction layers,which is beneficial to obtain a stable crystal *** LNMO material synthesized by HTS method delivers an initial capacity of 127 mAh·g^(-1) at 0.1 C and capacity retention of 81.6%after 300 cycles at 1 C,and exhibits excellent performance at low temperature.
Adopting high-voltage Ni-rich cathodes in halide and sulfide-based all-solid-state lithium batteries（ASSLBs） holds great promise for breaking through the 400 Wh ***,both cell configurations are confronted with intri...
详细信息
Adopting high-voltage Ni-rich cathodes in halide and sulfide-based all-solid-state lithium batteries（ASSLBs） holds great promise for breaking through the 400 Wh ***,both cell configurations are confronted with intricate interfacial challenges in high-voltage regines（>4.5 V）,resulting in inadequate cathode utilization and premature cell ***,contrary to previous studies,coupled with LiNi0.85Co0.1Mn0.05O2cathodes,typical halide（Li2ZrCl6）-based cells at 4.5 V feature unlimited interfacial degradation and poor long cycle stability,while typical sulfide（Li6PS5Cl）-based cells feature self-limited interfacial degradation and poor initial cycle ***,this work addresses the high-voltage limitations of Li2ZrCl6and Li6PS5Cl catholyte-based cells by manipulating electrode mass fraction and tailoring interfacial composition,thereby effectively improving interfacial charge-transfer kinetics and（electro）chemical stability within *** appropriate interface design,both optimized cells at 4.5 V demonstrate remarkably increased initial discharge capacities(>195 mA h g-1at0.1 C),improved cycle stabilities（>80% after 600 cycles at 0.5 C）,and enhanced rate performances(>115 mA h g-1at 1.0 C).This work deepens our understanding of high-voltage applications for halide/sulfide electrolytes and provides generalized interfacial design strategies for advancing high-voltage ASSLBs.
暂无评论