Boosting the performance of organic cathodes through structure tuning

Xie, Jian; Chen, Wangqiao; Long, Guankui; Gao, Weibo; Xu, Zhichuan J.; Liu, Ming; Zhang, Qichun

doi:10.1039/c8ta03857k

Cited by 98 publications

(93 citation statements)

References 55 publications

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“…Notably,the introduction of an ethynyl moiety into the backbone led to asignificantly improved rate capability. [49] Two-dimensional covalent organic frameworks (COFs) containing redox-active quinone moieties were presented by Wu et al, [50b] AbruÇae tal., [50c] and Wang et al [50a] Applyinge xfoliated few-layer nanosheets of the COFs in combination with al ithium counter electrode, ac ell featuring ad ischarge voltage of 2.8 Va nd ac apacity that is stable over 1000 cycles was demonstrated ( Figure 5). [50a]…”

Section: Batterys Ystem Vmentioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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In times of spreading mobile devices, organic batteries represent a promising approach to replace the well‐established lithium‐ion technology to fulfill the growing demand for small, flexible, safe, as well as sustainable energy storage solutions. In the last years, large efforts have been made regarding the investigation and development of batteries that use organic active materials since they feature superior properties compared to metal‐based, in particular lithium‐based, energy‐storage systems in terms of flexibility and safety as well as with regard to resource availability and disposal. This Review compiles an overview over the most recent studies on the topic. It focuses on the different types of applied active materials, covering both known systems that are optimized and novel structures that aim at being established.

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Section: Batterys Ystem Vmentioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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“…With the depletion of fossil fuels and ever‐increasing energy demands as well as adverse greenhouse effect, the efficient utilization of renewable power sources (e.g., wind, wave, solar) has become the most significant issue that must be confronted. [ 1–4 ] However, the intermittent characteristic of these renewable energy sources indicates that they cannot be used directly. Such a problem urgently requires scientists to pursue efficient energy‐converting devices and reliable energy‐storage systems with high specific energy, long lifespan, and excellent safety.…”

Section: Introductionmentioning

confidence: 99%

Covalent–Organic Frameworks: Advanced Organic Electrode Materials for Rechargeable Batteries

Sun

Xie

Guo

et al. 2020

Advanced Energy Materials

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506

329

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energy-storage systems with high specific energy, long lifespan, and excellent safety. [5][6][7] Among them, the rechargeable secondary batteries have been demonstrated as the most promising candidate for electricity storage and utilization. [8][9][10][11] As one of the most popular batteries, lithium-ion batteries (LIBs) have found immense success in consumer electronics and electric vehicles, and are under the consideration for energy-storage power stations. [12][13][14] However, the commercial LIBs based on transition metal-based inorganic compounds have encountered a bottleneck. [15][16][17] The charge storage of inorganic electrode materials is governed by the oxidation-state variation of transition metal centers and achieved a charge balance with the insertion of counterions. [18] Restricted by crystal lattice and structure stability, the size and valence of counterions are required to match the crystal structures, which severely limit further improvement of energy density. [19][20][21] Clearly, these factors intrinsically weaken the versatility of inorganic materials. For instance, the similar electrode materials, which are successful in LIBs, are not suitable for other alkali ions batteries. [22][23][24] Additionally, from the viewpoint of economical and renewable factors of mineral resources, the existing LIBs based on transition metals (e.g., cobalt, nickel, and manganese) are difficult to meet the requirement of large-scale energy storage. [25] Nowadays, various demands have been raised up for the state-ofthe-art batteries, not only in the enhancement of cycle life, fast charging, and safety, but also in the focus of cost, lightweight, pollution-free, and environmental benign. [26,27] Under this background, researchers gradually shift their studies on novel batteries system and electrode materials. [28][29][30][31] Among them, explorations on the possibility of using organic compounds as potential alternatives of current inorganic electrode materials have never been stopped. [32,33,66] Organics have been demonstrated as promising electrode candidates due to their variety, sustainability, relatively low cost, and environmental friendliness. [34][35][36] The structural diversity implies that the richness of organic materials will provide abundant options and room in this field. The molecule engineering means that the electrochemical properties of organic electrodes can be rationally tuned with different functional groups, which exhibits a good designability of organic materials. These important features allow various designable synthetic routes and convenient functionalization. Although organic electrode materials are endowed with many advantages, their development and Covalent-organic frameworks (COFs), featuring structural diversity, framework tunability and functional versatility, have emerged as promising organic electrode materials for rechargeable batteries and garnered tremendous attention in recent years. The adjustable pore configuration, coupled with the functionalization of frameworks through ...

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“…To tackle this issue, many approaches have been attempted, [ 8,9 ] and it is found that rational molecular structure design plays important roles in improving its performance. [ 7,10–21 ] In fact, to reduce the solubility of organic molecules, the key is to strengthen intermolecular interaction. The simplest way is to introduce substituent(s) into BQ to increase the intermolecular van der Waals force or ion interaction (Figure S1a, Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Rational Molecular Design of Benzoquinone‐Derived Cathode Materials for High‐Performance Lithium‐Ion Batteries

Yang

Xiong

Shi

et al. 2020

Adv Funct Materials

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p-Benzoquinone (BQ) is a promising cathode material for lithium-ion batteries (LIBs) due to its high theoretical specific capacity and voltage. However, it suffers from a serious dissolution problem in organic electrolytes, leading to poor electrochemical performance. Herein, two BQ-derived molecules with a near-plane structure and relative large skeleton: 1,4-bis(p-benzoquinonyl)benzene (BBQB) and 1,3,5-tris(p-benzoquinonyl)benzene (TBQB) are designed and synthesized. They show greatly decreased solubility as a result of strong intermolecular interactions. As cathode materials for LIBs, they exhibit high carbonyl utilizations of 100% with high initial capacities of 367 and 397 mAh g −1 , respectively. Especially, BBQB with better planarity presents remarkably improved cyclability, retaining a high capacity of 306 mAh g −1 after 100 cycles. The cycling stability of BBQB surpasses all reported BQ-derived small molecules and most polymers. This work provides a new molecular structure design strategy to suppress the dissolution of organic electrode materials for achieving high performance rechargeable batteries.

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Boosting the performance of organic cathodes through structure tuning

Cited by 98 publications

References 55 publications

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

Covalent–Organic Frameworks: Advanced Organic Electrode Materials for Rechargeable Batteries

Rational Molecular Design of Benzoquinone‐Derived Cathode Materials for High‐Performance Lithium‐Ion Batteries

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