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High-capacity power battery can be attained through the elevation of the cut-off voltage for LiNi 0.83 Co 0.12 Mn 0.05 O 2 high-nickel material. Nevertheless, unstable lattice oxygen would be released during the lithium deep extraction. To solve the above issues, the electronic structure is reconstructed by substituting Li + ions with Y 3+ ions. The dopant within the Li layer could transfer electrons to the adjacent lattice oxygen. Subsequently, the accumulated electrons in the oxygen site are transferred to nickel of highly valence state under the action of the reduction coupling mechanism. The modified strategy suppresses the generation of oxygen defects by regulating the local electronic structure, but more importantly, it reduces the concentration of highly reactive Ni 4+ species during the charging state, thus avoiding the evolution of an unexpected phase transition. Strengthening the coupling strength between the lithium layers and transition metal layers finally realizes the fast-charging performance improvement and the cycling stability enhancement under high voltage. Authors report on restructuring the electronic structure of a high-nickel material by substituting Li + ions with Y 3+ ions. This strategy suppresses the generation of oxygen defects with a reduction coupling mechanism improving high-voltage stability.

Aqueous zinc-ion secondary batteries (ZIBs), especially Zn-MnO 2 aqueous battery, have been stirred up widespread concern due to the high capacity, environmental friendliness, and reliable safety performance. However, low conductivity of MnO 2 and the dissolution of manganese will hinder its application as cathode material for ZIBs with high rate performance and excellent cycle stability. In this work, α-MnO 2 /rGO nanowires were coated with conductive polypyrrole via in situ self-polymerization. As used as cathode material for ZIBs, α-MnO 2 /rGO-PPy shows the reversible capacity of 248.8 mAh g −1 at 0.5 A g −1 and still achieves 213.8 mAh g −1 after 100 cycles, demonstrating much enhanced performance compared with α-MnO 2 /rGO and α-MnO 2 . The excellent performances should be due to the polypyrrole coating and incorporation of reduced graphene oxide, which not only alleviate the dissolution of Mn but also improve the conductivity of the whole electrode.

Lithium batteries are currently the most popular and promising energy storage system, but the current lithium battery technology can no longer meet people's demand for high energy density devices. Increasing the charge cutoff voltage of a lithium battery can greatly increase its energy density. However, as the voltage increases, a series of unfavorable factors emerges in the system, causing the rapid failure of lithium batteries. To overcome these problems and extend the life of high‐voltage lithium batteries, electrolyte modification strategies have been widely adopted. Under this content, this review first introduces the degradation mechanism of lithium batteries under high cutoff voltage, and then presents an overview of the recent progress in the modification of high‐voltage lithium batteries using electrolyte modification strategies. Finally, the future direction of high‐voltage lithium battery electrolytes is also proposed. High‐voltage lithium batteries have some challenges, e.g., electrolyte decomposition, parasitic oxidation reaction, transition metal dissolution and surface cracks and phase changes in regards with cathodes. In this review, we will overview the recent progress in the modification of high‐voltage lithium batteries using electrolyte modification strategies, and propose future research directions.

Sodium ion batteries (SIBs) have drawn considerable research attention in energy storage systems due to its low cost and the abundance of sodium resource. However, it is still a big challenge to develop advanced anode materials to achieve high-performance SIBs. In this work, we developed porous lithium titanate (Li4Ti5O12) nanosheets by a simple surfactant-regulating hydrothermal method followed by a calcinating process and used as an anode for SIBs. We investigated the effect of hexadecyl trimethyl ammonium bromide (CTAB) on the morphology and electrochemical properties of Li4Ti5O12 in detail and found that the samples regulated by suitable content of CTAB in the synthesis process have a more regular structure and better electrochemical performance. The optimized sample showed high reversible capacities of 158.9 mAh g−1 and 123.2 mAh g−1 at 0.1 A g−1 and 0.5 A g−1, respectively. The superior electrochemical performance may be originated from the unique porous nanosheet structure, which greatly decreases the charge transfer resistance, shortens the ion diffusion path and offers more active sites for sodium storage.

High‐voltage nickel (Ni)‐rich layered oxide‐based lithium metal batteries (LMBs) exhibit a great potential in advanced batteries due to the ultra‐high energy density. However, it is still necessary to deal with the challenges in poor cyclic and thermal stability before realizing practical application where cycling life is considered. Among many improved strategies, mechanical and chemical stability for the electrode electrolyte interface plays a key role in addressing these challenges. Therefore, extensive effort has been made to address the challenges of electrode‐electrolyte interface. In this progress, the failure mechanism of Ni‐rich cathode, lithium metal anode and electrolytes are reviewed, and the latest breakthrough in stabilizing electrode‐electrolyte interface is also summarized. Finally, the challenges and future research directions of Ni‐rich LMBs are put forward. Lithium metal batteries show the great potential in advanced batteries due to their ultra‐high energy density. This article discusses the failure mechanisms of Ni‐rich cathodes, lithium metal anodes, and electrolytes, and overviews the latest breakthroughs in stabilizing the electrode electrolyte interface from the aspect of electrolytes.

Na3V2(PO4)2F3 (NVPF) is an extremely promising sodium storage cathode material for sodium-ion batteries because of its stable structure, wide electrochemical window, and excellent electrochemical properties. Nevertheless, the low ionic and electronic conductivity resulting from the insulated PO43− structure limits its further development. In this work, the different valence states of Mnx+ ions (x = 2, 3, 4) doped NVPF were synthesized by the hydrothermal method. A series of tests and characterizations reveals that the doping of Mn ions (Mn2+, Mn3+, Mn4+) changes the crystal structure and also affects the residual carbon content, which further influences the electrochemical properties of NVPF-based materials. The sodiation/desodiation mechanism was also investigated. Among them, the as-prepared NVPF doped with Mn2+ delivers a high reversible discharge capacity (116.2 mAh g−1 at 0.2 C), and the capacity retention of 67.7% after 400 cycles at 1 C was obtained. Such excellent performance and facile modified methods will provide new design ideas for the development of secondary batteries.

Embedded Si/graphene composite was fabricated by a novel method, which was in situ generated SiO 2 particles on graphene sheets followed by magnesium-thermal reduction. The tetraethyl orthosilicate (TEOS) and flake graphite was used as original materials. On the one hand, the unique structure of as-obtained composite accommodated the large volume change to some extent. Simultaneously, it enhanced electronic conductivity during Li-ion insertion/extraction. The MR-Si/G composite is used as the anode material for lithium ion batteries, which shows high reversible capacity and ascendant cycling stability reach to 950 mAh·g −1 at a current density of 50 mA·g −1 after 60 cycles. These may be conducive to the further advancement of Si-based composite anode design.

Sodium‐ion batteries (SIBs) have exhibited significant commercial potential, benefiting from the abundance and global distribution of sodium resources. Among the diverse cathode materials under exploration for SIBs, Na3MnTi(PO4)3 (NMTP) stands out as a highly promising candidate for practical applications, which combines the structural stability and high‐voltage characteristics inherent to NASICON‐type materials. In recent years, substantial advancements have been achieved in the research of NMTP. However, a comprehensive and up‐to‐date specialized review dedicated to its research progress and prospects remains lacking. This review, therefore, aims to systematically discuss the development and outlook of NMTP cathode material. Initially, the manuscript delves into the crystal structure and sodium‐storage mechanism of NMTP. Subsequently, the synthesis methods, electrochemical properties, and optimization strategies are explored. Finally, the review outlines current challenges and suggests potential future research directions for NMTP. Na3MnTi(PO4)3 (NMTP) combines the inherent structural stability and high‐voltage characteristics of NASICON‐type frameworks, positioning it as a highly promising cathode candidate for practical sodium‐ion batteries. To date, substantial progress has been achieved in NMTP research, and this article provides a comprehensive review of its development and future prospects, aiming to offer scientific guidance.

Construction of ordered structures that respond rapidly to environmental stimuli has fascinating possibilities for utilization in energy storage, wearable electronics, and biotechnology. Silicon/carbon (Si/C) anodes with extremely high energy densities have sparked widespread interest for lithium‐ion batteries (LIBs), while their implementation is constrained via mechanical structure deterioration, continued growth of the solid electrolyte interface (SEI), and cycling instability. In this study, a piezoelectric Bi 0.5 Na 0.5 TiO 3 (BNT) layer is facilely deposited onto Si/C@CNTs anodes to drive piezoelectric fields upon large volume expansion of Si/C@CNTs electrode materials, resulting in the modulation of interfacial Li + kinetics during cycling and providing an electrochemical reaction with a mechanically robust and chemically stable substrate. In‐depth investigations into theoretical computation, multi‐scale in/ex situ characterizations, and finite element analysis reveal that the improved structural stability, suppressed volume variations, and controlled ion transportation are responsible for the improvement mechanism of BNT decorating. These discoveries provide insight into the surface coupling technique between mechanical and electric fields to control the interfacial Li + kinetics behavior and improve structural stability for alloy‐based anodes, which will also spark a great deal attention from researchers and technologists in multifunctional surface engineering for electrochemical systems.

Lithium‐ion composite solid electrolyte membranes embedded with Li1.3Al0.3Ti1.7P3O12 and poly(vinylidene fluoride) are prepared using a facile casting method. Furthermore, we added LiI as an active agent for decomposing the anode product. The synergy resulted in a high conductivity of 7.4 mS·cm−1 and lithium‐ion mobility of 0.59 and a reduction of the overpotential to 0.86 V for lithium–oxygen batteries (LOBs). The membrane has enhanced Young's modulus of 6.6 GPa that effectively blocked the lithium dendrite growth during the battery operation and puncturing to the membrane led to a significant LOB cycle life of 542 cycles. Meanwhile, Li|Li symmetrical battery overpotential maintained at 42 mV after 470 h of operation. The figure highlights the lithium‐ion conducting membrane (LCM) in lithium–oxygen batteries. Redox mediators (RMs) are added to the cathode as a catalyst for decomposing lithium peroxide (Li2O2). The LCM membrane exhibits high ionic conductivity, blocking RMs shuttling and preventing dendrite growth.