Interface engineering towardhigh‐efficiencyalloy anode for next‐generation energy storage device

Abstract

Alloy materials are considered as the promising anodes for next‐generation energy storage devices attributed to their high theoretical capacities and suitable working voltage. However, further commercialization is hindered by their remarkable volume change during cycling. The interface engineering has been proposed as an effective strategy to alleviate the volume expansion and improve the electrochemical performance of alloy anode. In this review, we discuss the failure mechanisms for alloy anode during charging/discharging processes. Then the mechanisms of interface engineering for alloy anode were proposed. Next, the interface engineering strategies for alloy anode such as artificial solid electrolyte interphase (SEI), structure control, and electrolyte composition design toward improved performance were summarized. Finally, the challenge and perspective of interface engineering of alloy anodes was discussed. This review may promote the development of alloy anode with improved electrochemical performance for practical renewable energy applications.image

Thio‐/LISICON and LGPS‐Type Solid Electrolytes for All‐Solid‐State Lithium‐Ion Batteries

“…The ASEI with high mechanical strength can restrain the emergence of Li dendrite. [ 171 ] When the shear modulus of ASEI is 1.8 times stronger than that of Li metal, non‐dendrite Li deposition can be achieved. [ 172 ] Optimize electrolyte composition is also an effective way to control Li dendrites.…”

Metal‐organic framework derived porous structures towards lithium rechargeable batteries

“…Some say that the battery of things era has arrived, saying that energy can now be used anytime, anywhere without being constrained by time and space through innovation in secondary battery technology. The largest demand for LIBs is coming from the need to power digital devices such as mobile phones, laptop computers, and the demand is expanding from portable information and communication devices to large‐scale applications such as space and aviation, electric vehicles, hybrid vehicles, and advanced energy storage systems for supporting electrical grids 1‐9 …”

“…The largest demand for LIBs is coming from the need to power digital devices such as mobile phones, laptop computers, and the demand is expanding from portable information and communication devices to large-scale applications such as space and aviation, electric vehicles, hybrid vehicles, and advanced energy storage systems for supporting electrical grids. [1][2][3][4][5][6][7][8][9] Figure 1 is a schematic diagram showing the history and development direction of secondary batteries starting with lead-acid batteries. In recent years, the market has been growing, largely based on the development of electric vehicles.…”

Constructing a Composite Structure by a Gradient Mg2+ Doping Strategy for High-Performance Sodium-Ion Batteries

“…Sodium-ion batteries (SIBs) have been deemed as an appealing alternative for electrochemical energy storage systems on a large scale by virtue of the analogous working principle with lithium-ion batteries (LIBs), abundant reserves, and attractive cost. − Moreover, cathode materials are of great significance in determining the operating voltage and energy density. − Among many cathode materials, layered transition metal oxides possess high specific capacity, cost effectiveness, and convenience for large-scale preparation. − In particular, P2-type Na 0.67 Mn 0.67 Ni 0.33 O 2 (P2-NMNO) materials are supposed to be an attractive cathode alternative for commercialization due to the high voltage profile (average voltage ≥3.5 V), high specific capacity, and good stability in an ambient atmosphere and moisture. , Nevertheless, bulk failure caused by the high-voltage P2–O2 phase transformation (4.2 V vs Na + /Na) results in large volume expansion and contraction. This not only causes inferior Na + diffusion kinetics but also gives rise to the initiation and propagation of cracks .…”