Lithium Ion Breathable Electrodes with 3D Hierarchical Architecture for Ultrastable and High‐Capacity Lithium Storage

Abstract

Transition-metal oxides show genuine potential in replacing state-of-the-art carbonaceous anode materials in lithium-or sodium-ion batteries because of their much higher theoretical capacity. However, they usually undergo massive volume change, which leads to numerous problems in both material and electrode levels, such as material pulverization, instable solid-electrolyte interphase, and electrode failure. Here, it is demonstrated that lithium-ion breathable hybrid electrodes with 3D architecture tackle all these problems, using a typical conversion-type transition-metal oxide, Fe 3 O 4 , of which nanoparticles are anchored onto 3D current collectors of Ni nanotube arrays (NTAs) and encapsulated by δ-MnO 2 layers (Ni/Fe 3 O 4 @MnO 2 ). The δ-MnO 2 layers reversibly switch lithium insertion/extraction of internal Fe 3 O 4 nanoparticles and protect them against pulverizing and detaching from NTA current collectors, securing exceptional integrity retention and efficient ion/electron transport. The Ni/Fe 3 O 4 @ MnO 2 electrodes exhibit superior cyclability and high-capacity lithium storage (retaining ≈1450 mAh g −1 , ≈96% of initial value at 1 C rate after 1000 cycles).

Double‐Shelled Nanostructure of SnO2@C Tube‐in‐SnO2@C Tube Boosts Lithium‐Ion Storage

“…Therefore, in the case of anode, the research hotspots focus on the development and search of new high‐performance anodes to replace graphite. To date, many nanostructured metal oxides (MOs), such as Fe 2 O 3 , GeO 2 , MnO 2 , Co 3 O 4 , and so on, have been developed and evaluated as anodes for LIBs . They showed better electrochemical properties than that of graphite, especially in terms of specific capacity and rate capacity due to their high theoretical capacities and characteristic nanostructures.…”

Freeze‐Drying‐Assisted Synthesis of Porous SnO2/rGO Xerogels as Anode Materials for Highly Reversible Lithium/Sodium Storage

“…Nowadays, lithium‐ion batteries (LIBs) served as the most important energy storage devices have been widely used in electric vehicles and hybrid electric vehicles . However, LIBs meet the bottleneck by graphite anodes, due to its limited specific capacity of 372 mAh g −1 .…”

“…Nowadays, lithium-ion batteries (LIBs) served as the most important energy storage devices have been widely used in electric vehicles and hybrid electric vehicles. [1][2] However, LIBs meet the bottleneck by graphite anodes, due to its limited specific capacity of 372 mAh g À1 . Na-ion batteries (SIBs) as potential energy storage devices are considered to be an alternative to LIBs due to the abundance and low cost of elemental Na.…”

In Situ Growth of a Feather‐like MnO2 Nanostructure on Carbon Paper for High‐Performance Rechargeable Sodium‐Ion Batteries

“…Recently, tuning crystallographic structure of oxides to improve the diffusion and transport of electrolyte ions have become a hot research topic . Transition metal oxides have been traditionally used as anode materials for LIBs and SIBs, such as TiO 2 , Fe 3 O 4 ,, CuO,, NiCo 2 O 4 ,.…”

“…Recently, tuning crystallographic structure of oxides to improve the diffusion and transport of electrolyte ions have become a hot research topic. [5][6][7][8][9][10][11][12] Transition metal oxides have been traditionally used as anode materials for LIBs and SIBs, such as TiO 2 , [13][14][15][16] Fe 3 O 4 , [17,18] CuO, [19,20] NiCo 2 O 4 . [21,22] Among various transition metal oxides, manganese oxide have attracted a great many attention for their different oxidation states of manganese, the low toxicity, the low cost, and superior safety.…”