Electroactive organics as promising anode materials for rechargeable lithium ion and sodium ion batteries

Abstract

Electroactive organics have attracted significant attention as electrode materials for next-generation rechargeable batteries because of their structural diversity, molecular adjustability, abundance, flexibility, environmental friendliness and low cost. To date, a large number of organic materials have been applied in a variety of energy storage devices. However, the inherent problems of organic materials, such as their dissolution in electrolytes and low electronic conductivity, have restricted the development of organic electrodes. In order to solve these problems, many groups have carried out research and remarkable progress has been made. Nevertheless, most reviews of organic electrodes have focused on the positive electrode rather than the negative electrode. This review first provides an overview of the recent work on organic anodes for Li- and Na-ion batteries. Six categories of organic anodes are summarized and discussed. Many of the key factors that influence the electrochemical performance of organic anodes are highlighted and their prospects and remaining challenges are evaluated.

Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage

“…It is known that, besides the enhanced reaction kinetics, interface engineering in electrode materials may increase electrode capacities that often exceed theoretical values. [ 29 , 30 , 31 , 32 ] Nevertheless, little is known regarding what contribute to the enhanced capacity and most work attribute the enhancement to the vaguely defined “synergistic effect”. The synergetic effect on the Na + ions storage mechanism of the composite electrode remains unclear and the effect of heterointerface in the enhanced sodium ion storage has been often overlooked.…”

Superstructure Control of Anionic Redox Behavior in Manganese-Based Cathode Materials for Li-Ion Batteries

“…Electrochemical energy storage and conversion provides an effective way to solve energy and environmental issues. − As the state-of-the-art energy storage device at present, lithium-ion batteries (LIBs) are widely applied in hybrid power devices, electric vehicles, and other portable electronic products, and the application prospect in the field of energy storage is also considerable. − As the cathode electrode material with the highest specific capacity and energy density in the intercalation system, Li-rich manganese-based layered oxides (LRMOs) , have been studied and modified since formally proposed by Thackeray in 2004, which is one of the most promising next-generation LIBs cathode materials …”

Nitrogen/Phosphorus Dual‐Doped Hard Carbon Anode with High Initial Coulombic Efficiency for Superior Sodium Storage

“…Sodium-ion batteries (SIBs) have attracted extensive attention owing to rich resources, low cost, and competitive performance. [1][2][3][4] Numerous anode materials have been well explored for SIBs, for example, carbon materials, [5][6][7] metal oxides, [8][9][10] metal sulfides, [11] metal selenides, [12] and alloys. [13] Among these, carbon materials, especially hard carbon, have been considered the best option for sodium-ion storage due to their high electronic conductivity, renewable resources, and low cost.…”

“…Sodium‐ion batteries (SIBs) have attracted extensive attention owing to rich resources, low cost, and competitive performance [1–4] . Numerous anode materials have been well explored for SIBs, for example, carbon materials, [5–7] metal oxides, [8–10] metal sulfides, [11] metal selenides, [12] and alloys [13] .…”