An organic cathode with high capacities for fast-charge potassium-ion batteries

Tang, Mi; Wu, Yanchao; Chen, Yuan; Jiang, Cheng; Zhu, Shaolong; Zhuo, Shuming; Wang, Chengliang

doi:10.1039/c8ta09960j

Cited by 157 publications

(146 citation statements)

References 66 publications

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“…The polyaniline cathode demonstrates superior cycling stability with 98% of its initial capacity after 100 cycles at 50 mA g −1 . Poly (pentacenetetrone sulfide) (PPTS) was also reported as a novel cathode . The PPTS cathode shows excellent electrochemical performance, which is competitive to those of the most‐latest reported cathode materials.…”

Section: Cathode Materialsmentioning

confidence: 99%

Review on Recent Advances of Cathode Materials for Potassium‐ion Batteries

Sha

Liu

Zhao

et al. 2020

Energy & Environ Materials

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Potassium‐ion batteries (PIBs) as a promising supplement to lithium‐ion batteries have drawn great attention attributing to the abundant potassium resources, the fast‐ionic conductivity of potassium ions in electrolyte, and the low standard redox potential of potassium. However, the development of PIBs is still in its infancy, which is largely restricted by the fact that the electrode materials, especially the cathode materials of PIBs, are far from satisfactory in practical applications regarding the capacity, voltage, and cycle life. Therefore, most of current research efforts have been devoted to exploring new and high‐performance electrode materials for achieving PIBs with high capacity and voltage as well as excellent cyclability. In this review, the recent advancements on cathode materials for PIBs are specially summarized. Besides, technological developments, scientific challenges, and future research opportunities of cathode materials for PIBs are also briefly outlooked.

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Section: Cathode Materialsmentioning

confidence: 99%

Review on Recent Advances of Cathode Materials for Potassium‐ion Batteries

Sha

Liu

Zhao

et al. 2020

Energy & Environ Materials

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“…[ 4 ] Among them, potassium terephthalate (K 2 TP, 222 mAh g −1 ) and potassium 2,5‐pyridinedicarboxylate (K 2 PC, 221 mAh g −1 ) were initially unveiled as the first organic anodes in 2017; [ 5 ] and 3,4,9,10‐perylene‐tetracarboxylic dianhydride (PTCDA, 131 mAh g −1 ) was the first example of organic cathodes reported in 2015. [ 6 ] Afterward, several organic anodes (e.g., K 2 BPDC, [ 7 ] K 4 PTC, [ 8 ] ADAPTS, [ 9 ] and vitamin K [ 10 ] ) and organic cathodes (e.g., PAQS, [ 11 ] AQDS, [ 12 ] CuTCNQ, [ 13 ] PPTS, [ 14 ] HAT, [ 15 ] PI, [ 16 ] and PTCDI [ 17 ] ) were respectively reported.…”

Section: Introductionmentioning

confidence: 99%

Novel Insoluble Organic Cathodes for Advanced Organic K‐Ion Batteries

Tang

et al. 2020

Adv Funct Materials

131

108

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Organic redox-active molecules are inborn electrodes to store large-radius potassium (K) ion. High-performance organic cathodes are important for practical usage of organic potassium-ion batteries (OPIBs). However, smallmolecule organic cathodes face serious dissolution problems against liquid electrolytes. A novel insoluble small-molecule organic cathode [N,N′-bis(2anthraquinone)]-perylene-3,4,9,10-tetracarboxydiimide (PTCDI-DAQ, 200 mAh g −1 ) is initially designed for OPIBs. In half cells (1-3.8 V vs K + /K) using 1 m KPF 6 in dimethoxyethane (DME), PTCDI-DAQ delivers a highly stable specific capacity of 216 mAh g −1 and still holds the value of 133 mAh g −1 at an ultrahigh current density of 20 A g −1 (100 C). Using reduced potassium terephthalate (K 4 TP) as the organic anode, the resulting K 4 TP||PTCDI-DAQ OPIBs with the electrolyte 1 m KPF 6 in DME realize a high energy density of maximum 295 Wh kg −1 cathode (213 mAh g −1 cathode × 1.38 V) and power density of 13 800 W Kg −1 cathode (94 mAh g −1 × 1.38 V @ 10 A g −1 ) during the working voltage of 0.2-3.2 V. Meanwhile, K 4 TP||PTCDI-DAQ OPIBs fulfill the superlong lifespan with a stable discharge capacity of 62 mAh g −1 cathode after 10 000 cycles and 40 mAh g −1 cathode after 30 000 cycles (3 A g −1 ). The integrated performance of PTCDI-DAQ can currently defeat any cathode reported in K-ion half/full cells.

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“…The π-π conjugated aromatic structures are critical to get the good conductivity of the electrode and provide layer-by-layer intermolecular interactions to tolerate the diffusions of alkali metal ions in the π-π conjugated systems. [42,43] Demonstrated by the electrochemical impedance spectroscopy of composed LIBs and SIBs by TA and EA, the good conductivities of the cells were kept ( Figure S1).…”

Section: Resultsmentioning

confidence: 98%

“…EA is composed of 4,4,5,5‐tetrahydroxybiphenyl and 2,6 : 2,6‐biscarbolactone, and TA is composed of five dimers of 3,4,5‐tryhydroxylbenzoic acid polymerized by carboxyl with hexopyranose in the center. The π‐π conjugated aromatic structures are critical to get the good conductivity of the electrode and provide layer‐by‐layer intermolecular interactions to tolerate the diffusions of alkali metal ions in the π‐π conjugated systems . Demonstrated by the electrochemical impedance spectroscopy of composed LIBs and SIBs by TA and EA, the good conductivities of the cells were kept (Figure S1).…”

Section: Resultsmentioning

confidence: 99%

Natural Compounds Gallic Acid Derivatives for Long‐Life Li/Na Organic Batteries

Xia

Wang

et al. 2019

ChemElectroChem

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Li/Na organic batteries have attracted the attention of researchers because of their flexibility, lightweight, and recyclability compared to the metal oxide‐based Li/Na‐ion batteries. The low specific capacity is a major problem for the application of Li/Na organic batteries. Herein, we found that the green and natural gallic acid derivatives, ellagic acid (EA, dimer) and tannic acid (TA, oligomer) are good anode materials for Li‐ and Na‐ion batteries due to their π‐π conjugated structures and abundant carbonyl, carboxyl, phenolic groups. Outstanding electrochemical performance in specific capacity and cycling stability are exhibited. 644, 364, 195, and 162 mAh g−1 for EA and 297, 451, 465, and 265 mAh g−1 for TA are obtained for Li‐ion batteries (LIBs) at current densities of 0.1, 0.2, 0.5, and 1.0 A g−1 after 150, 250, 500, 1000 cycles, respectively. The specific capacities of EA and TA LIBs are higher than those of organic LIBs and can be comparable with metal oxide LIBs. And the cycling stabilities of EA and TA LIBs are better. Meanwhile, EA and TA are universal anode materials, which enable us to construct Na‐ion batteries that show specific capacity of 105 mAh g−1 for EA and 46 mAh g−1 for TA at 50 mA g−1 after 350 cycles. This work provides us important inspirations for exploring organic materials from nature, which can be applied in green and high‐performance energy‐storage devices.

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An organic cathode with high capacities for fast-charge potassium-ion batteries

Abstract: Poly(pentacenetetrone sulfide) (PPTS) as a cathode for PIBs exhibits high electrochemical performance. Novel methods are also demonstrated for inhibiting K dendrites.

Cited by 157 publications

References 66 publications

Review on Recent Advances of Cathode Materials for Potassium‐ion Batteries

Review on Recent Advances of Cathode Materials for Potassium‐ion Batteries

Novel Insoluble Organic Cathodes for Advanced Organic K‐Ion Batteries

Natural Compounds Gallic Acid Derivatives for Long‐Life Li/Na Organic Batteries

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