Yangyang Liu

Xi'an Jiaotong University | XJTU

Despite promising high-capacity of lithium metal anode, one major obstacle for its wide application is the uncontrolled dendrite growth, causing low Coulombic efficiency (CE), irreversible capacity loss and short circuit. Here, we report a facile separator engineering to suppress Li dendrites growth through single-side deposition of magnesium (Mg)...

Developing suitable cathodes with high capacity and high power is challenging for K‐ion batteries. Herein, electrochemical K‐ion storage properties of the layered‐type K0.4V2O5 (KVO) cathode by incorporating divalent strontium ions (Sr²⁺) into its crystal structure are enhanced. Divalent strontium ions (1.18 Å) are preferentially incorporated into...

Alloying‐type metallic tin is perceived as a potential anode material for K‐ion batteries owing to its high theoretical capacity and reasonable working potential. However, pure Sn still face intractable issues of inferior K⁺ storage capability owing to the mechanical degradation of electrode against large volume changes and formation of intermediar...

To meet the booming demand of high‐energy‐density battery systems for modern power applications, various prototypes of rechargeable batteries, especially lithium metal batteries with ultrahigh theoretical capacity, have been intensively explored, which are intimated with new chemistries, novel materials and rationally designed configurations. What...

Potassium metal batteries (KMBs) coupled with layered transition metal oxides as cathode materials are a promising energy−storage technology owing to low cost and high capacity. However, uncontrollable dendritic growth in the K−metal anode and chemical reactivity of the layered transition metal oxide cathode against the electrolyte solution cause K...

Single‐crystal LiNixCoyMnzO2 (SC‐NCM, x+y+z=1) cathodes are renowned for their high structural stability and reduced accumulation of adverse side products during long‐term cycling. While advances have been made using SC‐NCM cathode materials, careful studies of cathode degradation mechanisms are scarce. Herein, we employed quasi single‐crystalline...

Single‐crystal LiNi x Co y Mn z O 2 (SC‐NCM, x + y + z =1) cathodes are renowned for their high structural stability and reduced accumulation of adverse side products during long‐term cycling. While advances have been made using SC‐NCM cathode materials, careful studies of cathode degradation mechanisms are scarce. Herein, we employed quasi single‐...

High stress field generated by electroplating of lithium (Li) in pre-existing defects is the main reason for mechanical failure of solid-state electrolyte because it drives crack propagation in electrolyte, followed by Li filament growth inside and even internal short-circuit of cell if the filament reaches another electrode. To understand the role...

Batteries using potassium metal (K-metal) anode are considered a new type of low-cost and high-energy storage device. However, the thermodynamic instability of the K-metal anode in organic electrolyte solutions causes uncontrolled dendritic growth and parasitic reactions, leading to rapid capacity loss and low Coulombic efficiency of K-metal batter...

Conductive additive, one of the most important components of a battery, is an indispensable key material in the high-current charging and discharging processes of lithium-ion batteries. The most fundamental reason for adding appropriate conductive additives in the electrode is to improve the poor conductive performance of the electrode-active mater...

The mechanical failure of solid‐state electrolytes induced by the growth of the lithium metal anode hinders the development of solid‐state Li metal batteries with good safety and high energy density, and thus the understanding of the failure mechanism is of high importance for the application of solid‐state lithium‐metal batteries. Herein, a modifi...

Nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material has been widely concerned due to its high voltage, high specific capacity and excellent rate performance, which is considered as one of the most promising cathode materials for the next generation of high-energy-density solid-state lithium batteries. However, serious electro-chem-mechanical...

Embracing ultrahigh theoretical capacity of 3860 mA h g⁻¹ and the lowest reduction potential of −3.04 V (versus standard hydrogen electrode), lithium (Li) is considered as the “holy grail” material for pursuing higher energy density, of which application has been challenged due to the unstable interface caused by the non-uniform electrodeposition a...

Growth of lithium (Li) filaments within solid electrolytes, leading to the mechanical degradation of electrolyte and even short circuit of cell under high current density, is a great barrier to commercial adoption of solid‐state Li metal batteries. Understanding of this electro‐chemo‐mechanical phenomena is usually hindered by the challenge of trac...

Potassium–sulfur (K–S) batteries are emerging as low‐cost and high‐capacity energy‐storage technology. However, conventional K–S batteries suffer from two critical issues that have not yet been successfully resolved: the dissolution of potassium polysulfides (KPS) into the liquid electrolyte and the formation of K dendrites on the K metal anode, wh...

Lithium metal is considered to be a promising anode material for high‐energy‐density rechargeable batteries because of its high theoretical capacity and low reduction potential. Nevertheless, the practical application of Li anodes is challenged by poor cyclic performance and potential safety hazards, which are attributed to non‐uniform electrodepos...

Solid Electrolyte Interphases In article number 2103589, Aleksandar Matic, Shizhao Xiong and and co‐workers build an electro‐chemo‐mechanical model of a solid electrolyte interphase (SEI) on Li and reveal the correlation between the physical properties of the SEI and the electrodeposition behavior of Li. This work disentangles the role of the ionic...

Lithium metal has been considered as the most promising anode material due to its distinguished specific capacity of 3860 mAh g–1 and the lowest reduction potential of ‐3.04 V versus the Standard Hydrogen Electrode. However, the practicalization of Li‐metal batteries (LMBs) is still challenged by the dendritic growth of Li during cycling, which is...

Nonuniform electrodeposition of lithium during charging processes is the key issue hindering development of rechargeable Li metal batteries. This deposition process is largely controlled by the solid electrolyte interphase (SEI) on the metal surface and the design of artificial SEIs is an essential pathway to regulate electrodeposition of Li. In th...

Due to an ultrahigh theoretical specific capacity of 3860 mAh g−1, lithium (Li) is regarded as the ultimate anode for high‐energy‐density batteries. However, the practical application of Li metal anode is hindered by safety concerns and low Coulombic efficiency both of which are resulted fromunavoidable dendrite growth during electrodeposition. Thi...

The application of lithium metal as an anode material for next generation high energy‐density batteries has to overcome the major bottleneck that is the seemingly unavoidable growth of Li dendrites caused by non‐uniform electrodeposition on the electrode surface. This problem must be addressed by clarifying the detailed mechanism. In this work the...

A double‐wrapped binder has been rationally designed with high Young's modulus polyacrylic acid (PAA) inside and low Young's modulus bifunctional polyurethane (BFPU) outside to address the large inner stress of silicon anode with drastic volume changes during cycling. Harnessing the “hard to soft” gradient distribution strategy, the rigid PAA acts...

NASCION‐type Li conductors have great potential to bring high capacity solid‐state batteries to realization, related to its properties such as high ionic conductivity, stability under ambient conditions, wide electrochemical stability window, and inexpensive production. However, their chemical and thermal instability toward metallic lithium (Li) ha...

Lithium (Li) metal is regarded as the holy grail anode material for high-energy-density batteries owing to its ultrahigh theoretical specific capacity. However, its practical application is severely hindered by the high reactivity of metallic Li against the commonly used electrolytes and uncontrolled growth of mossy/dendritic Li. Different from wid...

Due to the high theoretical capacity density of 3680 mAh g⁻¹, lithium (Li) is considered as a promising anode for high-energy-density battery systems. However, its practical application is severely hampered by the invariable growth of Li dendrites and tremendous volume change during electrochemical plating-stripping process. Although real-time moni...

Lithium sulfur (Li–S) batteries are considered as promising candidates for high-energy-density battery systems owing to the high theoretical capacity of sulfur (1675 mAh g⁻¹) and low cost of raw materials. However, their practical application is hampered by low rate capability and rapid degradation of capacity, arising from the passivation of the c...

As one of the most promising anode material for lithium-Ion Batteries (LIBs), red phosphorus (P) has recently gained wide attention due to the high theoretical capacity of 2596 mAh/g. However, its practical application is hampered by the huge expansion of volume and low electronic conductivity. Herein, we report a red phosphorus/crumpled nitrogen-d...

Compared to conventional organic liquid electrolyte, solid-state polymer electrolytes are extensively considered as an alternative candidate for next generation high-energy batteries because of their high safety, non-leakage and electrochemical stability with the metallic lithium (Li) anode. However, solid-state polymer electrolytes generally show...

Red phosphorus (P) is considered as an alternative anode material for high-energy-density lithium-ion batteries (LIBs) due to its high theoretical specific capacity and cost-effectiveness. Whereas practical application of phosphorus is severely hindered by the nature of low electrical conductivity and its huge volume change during lithiation and de...

Lithium metal is regarded as a promising anode material for high energy density battery systems owing to its ultrahigh theoretical capacity (3860 mAh g ⁻¹ ). Unfortunately, problematic dendrite is the key obstacle for practical utilization. In general, it is taken for grant that the growth of lithium dendrites is accelerated at high current densiti...