Synergistic Engineering of Heterointerface and Architecture in New‐Type ZnS/Sn Heterostructures In Situ Encapsulated in Nitrogen‐Doped Carbon Toward High‐Efficient Lithium‐Ion Storage

Abstract

Engineering heterogeneous composite electrodes consisting of multiple active components for meeting various electrochemical and structural demands have proven indispensable for significantly boosting the performance of lithium‐ion batteries (LIBs). Here, a novel design of ZnS/Sn heterostructures with rich phase boundaries concurrently encapsulated into hierarchical interconnected porous nitrogen‐doped carbon frameworks (ZnS/Sn@NPC) working as superior anode for LIBs, is showcased. These ZnS/Sn@NPC heterostructures with abundant heterointerfaces, a unique interconnected porous architecture, as well as a highly conductive N‐doped C matrix can provide plentiful Li+‐storage active sites, facilitate charge transfer, and reinforce the structural stability. Accordingly, the as‐fabricated ZnS/Sn@NPC anode for LIBs has achieved a high reversible capacity (769 mAh g−1, 150 cycles at 0.1 A g−1), high‐rate capability and long cycling stability (600 cycles, 645.3 mAh g−1 at 1 A g−1, 92.3% capacity retention). By integrating in situ/ex situ microscopic and spectroscopic characterizations with theoretical simulations, a multiscale and in‐depth fundamental understanding of underlying reaction mechanisms and origins of enhanced performance of ZnS/Sn@NPC is explicitly elucidated. Furthermore, a full cell assembled with prelithiated ZnS/Sn@NPC anode and LiFePO4 cathode displays superior rate and cycling performance. This work highlights the significance of chemical heterointerface engineering in rationally designing high‐performance electrodes for LIBs.

1T–2H MoS2/Ti3C2 MXene Heterostructure with High-Rate and High-Capacity Performance for Sodium-Ion Batteries

“…Depletion of the petroleum resources and degradation of the natural environment have encouraged the development of new renewable energy systems in recent years. − It is urgently required to realize high-current fast-charging energy storage systems for the purpose of meeting the advancement of hand-held rechargeable devices and new energy electronic mobiles . Sodium-ion batteries (SIBs) have gained plenty of interest owing to rich sodium metal resources and the cost-effective technology, which are deemed as the most prospective substitutes for lithium-ion batteries (LIBs). − However, traditional commercial graphite is not an ideal anode material for SIBs, on account of its weak ionic bond and the larger radius of Na + (1.02 Å versus 0.76 Å for Li + ). , Additionally, the larger size of Na + results in a vast volume change, slow reaction kinetics, and even the structural collapse during cyclic charge and discharge, which brings on the decaying sodium storage capacity and unsatisfactory rate performance .…”

Enhanced 4.7 V Electrochemical Performance of the LiCoO2 Cathode via a Fluoride and LiCo1–xAlxO2 Composite Coating

“…The current modifications to enhance the cycling stability of the electrode at high voltage include surface coating, elemental doping, and electrolyte modification. − Among them, surface coating can optimize the electrode/electrolyte interface to inhibit surface side reactions and structural collapse, which has a significant effect on improving the electrochemical performance at high voltage . Fluoride as a coating layer can effectively improve the electrochemical performance of LCO under high voltage.…”

Lithium Perchlorate Additive for Dendritic-Free and Long-Life Li Metal Batteries

“…As a result of the rising demand for electric cars, portable electronics, defense equipment, and grid storage, the market for rechargeable battery applications is developing. − Because of its ultrahigh theoretical density (3860 mAh g –1 ) and the lowest redox potential among the several rechargeable batteries, the lithium metal rechargeable battery is one of the most appealing battery systems for next-generation energy storage devices (−3.04 V relative to the conventional hydrogen potential). − Regretfully, some complex challenges have hampered the industrialization of rechargeable Li metal batteries (LMBs), particularly the uncontrolled growth of Li dendrites during repeated charge/discharge processes, which leads to poor coulombic efficiency (CE), short cycling lifespan, internal short circuits, and even catastrophic safety hazards. − The solid electrolyte interphase (SEI) layer on the Li metal anode significantly influences Li nucleation behavior and is critical in avoiding the production of Li dendrites. − The SEI layer formed by the spontaneous reaction of Li metal with the electrolyte, on the other hand, is fragile. Because of its limited mechanical strength, it cannot sustain considerable volume fluctuations during long-term cycling, leading to Li metal and electrolyte consumption and an increase in interface impedance. − Consequently, the ideal SEI layer should have a homogeneous structure and composition, along with remarkable mechanical and electrical conductivity.…”

“…1−6 Because of its ultrahigh theoretical density (3860 mAh g −1 ) and the lowest redox potential among the several rechargeable batteries, the lithium metal rechargeable battery is one of the most appealing battery systems for next-generation energy storage devices (−3.04 V relative to the conventional hydrogen potential). 7−10 Regretfully, some complex challenges have hampered the industrialization of rechargeable Li metal batteries (LMBs), particularly the uncontrolled growth of Li dendrites during repeated charge/discharge processes, 11 which leads to poor coulombic efficiency (CE), short cycling lifespan, internal short circuits, and even catastrophic safety hazards. 12−16 The solid electrolyte interphase (SEI) layer on the Li metal anode significantly influences Li nucleation behavior and is critical in avoiding the production of Li dendrites.…”