The catalyst obtained through the synergistic nitrogen doping of Fe-tpphz and g-C₃N₄ greatly enhances the oxygen reduction reaction dynamics, enabling excellent performance of a Zinc-air battery. With the “irrigation” of the catalyst, “fruitful” products on the tree rooted from the Zinc-air battery can be reaped, to achieve a greener and healthier life. More details can be found in article number 2200602, Mingjun Hu, Jun Yang, and co-workers.

A new strategy for the stable operation of high energy, solid-state Na batteries by operating Na symmetric cells at elevated pressures is demonstrated. Enhanced interface kinetics are achieved at a stack pressure of 100 MPa and temperature of 50°C, evident by lowering the voltage polarization of the cells by 10 times. More details can be found in article number 2200658, Milana Trifkovic and co-workers.

Multiple advantages of Ruthenium-based materials, including pH-universal window, super performance, cheaper price, have been universally acknowledged. Herein, summarizing the recent advances and development of pH-universal Ru-based electrocatalysts toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting is focused, to provide the theoretical and experimental basis for a better design and synthesis of Ru-based electrocatalysts.

Batteries can possess path dependency at short, mid-term, and for aging. Herein, the future trajectory of the battery state depends on the operation history. The paper reviews research on path dependency and presents frequently suggested explanation models. Further, methods for characterization and promising modeling approaches are discussed. On this basis a perspective for future research and a common methodology is given.

High-entropy materials are emerging as promising water-splitting electrocatalysts due to their compositional flexibility, structural stability, and synergy between different elemental components. Herein, the recent achievements in water electrolysis catalyzed by high-entropy materials, covering an overview of material candidates, a discussion of theoretical/experimental insights, a focus on materials design strategies toward improved catalysts, and perspectives on future research directions, are summarized.

Herein, the stabilization of metal-phase 1T-MS₂ (M = molybdenum/tungsten), its heterojunction liquid-phase synthesis, photocatalytic properties, and the supercapacitor properties of the synthesized structure are presented. Moreover, the synthesis of high-efficiency hydrogen production photo-/electrocatalysts is particularly important for improving the energy conversion performance that has become a hot spot for scientists to study in pursuit of this goal.

Synergistic N-doping effect of Fe–tetrapyridophenazine (tpphz) and g-C₃N₄ leads to a super oxygen reduction catalyst Fe–NC&CN (E_1/2 = 0.879 V), better than commercial Pt/C in all aspects owing to the abundant FeN_X active sites, large specific surface area, suitable pore structure, and good conductivity. The assembled Zn–air battery (ZAB) with Fe–NC&CN also has an ultrahigh open-circuit voltage of 1.566 V.

Enhanced interface kinetics are achieved at elevated pressure and temperature in Na₃Zr₂Si₂PO₁₂-based all-solid state Na symmetric cells. At 100 MPa stack pressure and 50 °C, the voltage polarization of the cells is ≈10 times lower than those tested at 25 °C, demonstrating a new strategy for stable operation of high-energy, solid-state Na batteries.

Planar perovskite solar cells on flexible substrates show improved efficiency and stability thanks to the addition of low-temperature solution-processed phenethylammonium iodide (PEAI) passivation layers on top of the perovskite film. Several batches of flexible devices with different PEAI layer thicknesses are characterized in terms of performance, stability, and optoelectronic properties.

Graphene fibers with the tunable multi-hollow structure are developed by the dry spinning of graphene oxide via sacrificial silk fiber template, achieving fiber electrodes with a high surface specific area and electrochemical activity (357.25 F m⁻² at 200 μA). It presents a potentially scalable process of electrochemical fibers with low dependence on precursor concentration, improved spinning efficiency, and enhanced fiber strength.

Total heat generations of the cell in different fast charging modes.

Graphene oxide has been applied and proved a controllable modifier for the surface property of PTAA hole transporter that can also effectively passivate the adjacent perovskite layer, with optimized efficiency increased from 16.21% to 17.73% and long-term stability of encapsulated device that remained 99.6% of initial efficiency after 42 days of exposure to the environment.

This work combines the synchronized switch harvesting on inductor (SSHI) and alternative impedance matching for the impact-type piezoelectric energy harvesters. It deduces output power and switch delay of self-powered SSHI under decaying source and presents a power-saving mode to save energy under insufficient conditions. The proposed circuit shows 3.68× boost of the standard circuit and has 90.4% efficiency.

Micro-mesoporous nano-ZSM-5/MgAl-LDO composite with suitable acid–base bifunctional properties obviously improves the conversion rate of waste tires (62.04%), degradation rate (1.33 × 10⁻³ s⁻¹), and selectivity of light hydrocarbons (33.32%), which was nearly 10% higher than that of thermal pyrolysis.

The open pores in hard carbon favor the slope capacity while the closed pores promote the plateau capacity, and there exists an energy barrier for the Na deposition in the closed pores, leading to the rapid decay of plateau capacity at high current rate.

This experimental study shows how temperature gradients over the length of the cell and temperature changes with time impact the local aging effects on electrode and particle level in lithium-ion batteries. For example, electrode thickness, lithium concentration, and the lattice structure are mainly altered according to the local temperature, while temperature transients cause completely different degradation mechanisms.

A mesoporous indium tin oxide (ITO) transparent electrode is developed, and it is used as the back contact of printable mesoscopic perovskite solar cells (PSCs). This is the screen-printing process of the mesoscopic printable PSCs.

A variety of minimized electronics could be developed through cost-effective screen printing. Preparing homogeneous and stable inks for electrochemical energy storage devices is still challenging. Pure monoclinic VO₂ ink has been prepared without toxic solvents and then printed in symmetric supercapacitors. In an aqueous KOH electrolyte, the operating voltage reaches 1.4 V with an areal energy of 0.8 μWh cm⁻².

Solvent-free graphite anode is fabricated with the synergistic effect of polytetrafluorethylene (PTFE) and polyvinylidene fluoride (PVDF). PTFE acts as processing aid reagent to form a self-supporting electrode film, while PVDF acts as a functional binder when PTFE decomposes in the first lithiation process. The solvent-free graphite electrode with high loading shows good stability with more than 95% capacity retention after 50 charge/discharge cycles.

A prepared melem-modified carbon-supported platinum catalyst (Pt/MMC) exhibits high catalytic activity for the oxygen reduction reaction (2.1 times that of the 2020 U.S. Department of Energy target) and excellent durability in an accelerated aging test in a high potential region (1.0–1.5 V). The origin of the obvious promotion effect of MMC on the catalytic properties is clearly revealed for the first time.

The new petal-like S-NiV-layered double hydroxide (LDH) materials are successfully synthesized by a presynthetic solvothermal reaction and a sulfidation modification procedure. Due to the Ni₃S₂ formed on the surface of NiV-LDHs, the S-NiV-LDHs sample shows better energy storage performance and stability than NiV-LDHs.

Herein, a combined cooling, heating, and power system, for achieving cascade utilization of liquefied natural gas cold energy and high-temperature flue gas waste heat, is proposed. It explores system performance from thermal efficiency, exergy efficiency, exergoeconomy, and exergoenvironment and chooses different parameters to dynamically analyze the performance changes. Nondominated sorting whale optimization algorithm is adopted to optimize the system.

The moisture stability, thermal stability, and photovoltaic performance are improved in double-carbon layers configured with carbon-based perovskite solar cells (C-PSCs). The discovery of protruding perovskite crystals, which form from the excessive perovskite solution on the conventional C-PSCs, is investigated for the first time, and it is evidenced to be detrimental to device stability.

The photoinduced charge transfer dynamics in the perovskite solar cells is deciphered revealing negative chemical inductor features at low frequencies in the Nyquist plots.

A battery testing system is developed to simulate extreme climate like the lunar surface, high altitude, and polar regions of Earth. Efficient liquid nitrogen flow and the tailored configuration enable the system to reach an extreme temperature of −175 °C. Furthermore, a Li₄Ti₅O₁₂||Li cell produces a reversible capacity of 7.12 mAh g⁻¹ at −100 °C for the first time.

Herein, TiO₂ nanotube arrays coated with Ni (Ni/TiO₂NTs) are fabricated by using a predischarge-electrodeposition method and subsequent calcination under H₂/N₂. The Ni/TiO₂NTs composite electrode maintains a high capacity of 522 mA h g⁻¹ after 100 cycles at 0.2 A g⁻¹. The predischarge-electrodeposition provides a new route for the preparation of composite materials.

Herein, the electrochemical behavior and performance of the NaTi₂(PO₄)₃ electrode materials in the aqueous sodium ion battery is investigated. The sodium-ion diffusion coefficient of the material is calculated to discuss the diffusion mechanism of the composite material. This unique structure of NaTi₂(PO₄)₃ presents high performance in an aqueous sodium-ion battery.

The nonthermal plasma activation procedure has a beneficial effect on multiwalled carbon nanotubes (MWCNT) than on the carbon black particles N₂ plasma-activated MWCNT and pristine BP2000 mixture is used as an optimal support for Pt₃Pd₃Sn₂ catalyst to attain improved catalytic performance.

By leaching Al from Al–Si alloys, Si anodes are easily prepared as high-capacity and low-expansion Li-storage materials. This approach might be a universal method that can be applied to other alloy systems. The obtained well-designed anode consisting of microscale primary Si and nanoscale eutectic Si particles can suppress the volume expansion that occurs upon Li insertion.

Herein, room-temperature synthesis of a magnesium-ion conducting MgSc₂Se₄ chalcogenide spinel via the application of an electric field is described. This material is a prospective solid electrolyte for future generation all-solid-state magnesium batteries. The chalcogenide spinel class of materials is known for its Mg-ion conductivity at room temperature and can be employed as a solid electrolyte in Mg/Mg alloy anode-based all-solid-state batteries for energy storage applications.

Self-supporting hierarchically porous P-doped MoO₂/porous (Prs) Ni is developed as a cost-effective and robust electrocatalyst for hydrogen evolution reaction with reduced overpotentials in alkaline solution.

The performance and aging mechanisms of high-nickel lithium-ion batteries with accelerated aging at different discharge rates are investigated.

Machine learning method is valuable to investigate the feature importance of cathode materials and predict the energy storage performance for sodium-ion batteries.

The wind-induced response characteristics and variation laws of the flat-roof parabolic solar collector are obtained through wind tunnel experiments and finite element simulations, and then the calculation results are compared and analyzed with the ground parabolic solar collector. Finally, through a comprehensive analysis, the proposed stow location is put forward to improve the safety and service life of the collector.

By decarbonizing natural gas via methane pyrolysis, hydrogen can be produced without CO₂ emissions. Methane pyrolysis in a liquid metal bubble column reactor produces at least two types of carbon: soot and graphene-like carbon sheets. A model is presented which couples bubble dynamics with a kinetic mechanism that includes byproduct and soot formation.

This article presents data for 53 fifth-generation district heating and cooling (5GDHC) networks in Germany. The data is collected in a comprehensive survey among utility companies and engineering offices. The survey data includes technical information, such as network temperatures, heat sources, network lengths, and primary energy factors, as well as economic and political design decisions like price models.

An interfacial modifier of polyethylene glycol dodecyl ether (Brij) with ether group (C–O–C) and long alkyl chain is introduced into the surface of the perovskite layer, which passivates the defects, tunes the energy gradient, promotes the carrier extraction and transportation, enhances the moisture resistance of perovskite films, and consequently improves the performance and stability of perovskite solar cells.