Sub‐Thick Electrodes with Enhanced Transport Kinetics via In Situ Epitaxial Heterogeneous Interfaces for High Areal‐Capacity Lithium Ion Batteries

Abstract

The ever‐growing portable electronics and electric vehicle draws the attention of scaling up of energy storage systems with high areal‐capacity. The concept of thick electrode designs has been used to improve the active mass loading toward achieving high overall energy density. However, the poor rate capabilities of electrode material owing to increasing electrode thickness significantly affect the rapid transportation of ionic and electron diffusion kinetics. Herein, a new concept named “sub‐thick electrodes” is successfully introduced to mitigate the Li‐ion storage performance of electrodes. This is achieved by using commercial nickel foam (NF) to develop a monolithic 3D with rich in situ heterogeneous interfaces anode (Cu3P‐Ni2P‐NiO, denoted NF‐CNNOP) to reinforce the adhesive force of the active materials on NF as well as contribute additional capacity to the electrode. The as‐prepared NF‐CNNOP electrode displays high reversible and rate areal capacities of 6.81 and 1.50 mAh cm−2 at 0.40 and 6.0 mA cm−2, respectively. The enhanced Li‐ion storage capability is attributed to the in situ interfacial engineering within the NiO, Ni2P, and Cu3P and the 3D consecutive electron conductive network. In addition, cyclic voltammetry, charge–discharge curves, and symmetric cell electrochemical impedance spectroscopy consistently reveal improved pseudocapacitance with enhanced transports kinetics in this sub‐thick electrodes.

Atomic-scale investigation of the reversible α- to ω-phase lithium ion charge – discharge characteristics of electrodeposited vanadium pentoxide nanobelts

“…16,[18][19][20][21] V 2 O 5 nanostructures have been produced via a variety of synthetic methods including hydrothermal/solvothermal, electrospinning, wet-chemical, sol-gel, polyol, atomic layer deposition, and chemical vapor deposition (CVD). 6,[22][23][24][25][26][27] Whilst little used for V 2 O 5 synthesis, 19,21,27 electrodeposition has the inherent advantage that the material is, by virtue of the deposition process, electrically contacted to the electrode surface. This is an advantage over other methods which oen require further processing, e.g.…”

Zn–O–C bonds for efficient electron/ion bridging in ZnSe/C composites boosting the sodium-ion storage

“…Up to now, rechargeable lithium-ion batteries (LIBs) are one of the most successful examples. 2–5 In terms of a similar working mechanism with LIBs and the abundant natural source of sodium, SIBs are one of the most promising candidates for next-generation energy storage devices. 6,7 Compared to LIBs, a larger radius of Na + (1.02 Å) than that of Li + (0.76 Å) determines most anode materials with poor electrochemical dynamics and limited theoretical energy density of SIBs.…”

Controllable Morphology of Sea-Urchin-like Nickel–Cobalt Carbonate Hydroxide as a Supercapacitor Electrode with Battery-like Behavior

“…Since electrical energy plays an important role in daily routines, requiring a fast charge feature, lightweight, high electrical storage capacity, and long-period usage. , Unlike the battery such as Li-ion , and hybrid type, supercapacitors (SCs) are the most attractive energy storage technology due to high power efficiency and long life cycles . Different redox-active materials such as polyaniline, polypyrrole, and metal oxide have been promoted as active materials for pseudocapacitors (PCs) due to high theoretical specific capacitance, high mechanical properties, and high stability .…”