Organic electrode for non-aqueous potassium-ion batteries

Chen, Yanan; Luo, Wei; Carter, Marcus; Zhou, Lihui; Dai, Jiaqi; Fu, Kun; Lacey, Steven D.; Tian, Li; Wan, Jiayu; Han, Xiaogang; Bao, Yanping; Hu, Liangbing

doi:10.1016/j.nanoen.2015.10.015

Cited by 401 publications

(320 citation statements)

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“…[194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium. [194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium.…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

“…[194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium. [199] More interesting, when discharging this material to 0.01 V (vs K + /K), approximately 11 K + can be stored in this material, showing great potential as a high-capacity anode material for potassium batteries. [199,200] Recently, Hu's group reported that PTCDA exhibited reversible two-K + storage in the voltage range of 1.5-3.5 V (vs K + /K), affording an initial capacity of 131 mAh g -1 with 66.1% capacity retention over 200 cycles.…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

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Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

2017

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Organic carbonyl electrode materials that have the advantages of high capacity, low cost and being environmentally friendly, are regarded as powerful candidates for next-generation stationary and redox flow rechargeable batteries (RFBs). However, low carbonyl utilization, poor electronic conductivity and undesired dissolution in electrolyte are urgent issues to be solved. Here, we summarize a molecular engineering approach for tuning the capacity, working potential, concentration of active species, kinetics, and stability of stationary and redox flow batteries, which well resolves the problems of organic carbonyl electrode materials. As an example, in stationary batteries, 9,10-anthraquinone (AQ) with two carbonyls delivers a capacity of 257 mAh g (2.27 V vs Li /Li), while increasing the number of carbonyls to four with the formation of 5,7,12,14-pentacenetetrone results in a higher capacity of 317 mAh g (2.60 V vs Li /Li). In RFBs, AQ, which is less soluble in aqueous electrolyte, reaches 1 M by grafting -SO H with the formation of 9,10-anthraquinone-2,7-disulphonic acid, resulting in a power density exceeding 0.6 W cm with long cycling life. Therefore, through regulating substituent groups, conjugated structures, Coulomb interactions, and the molecular weight, the electrochemical performance of carbonyl electrode materials can be rationally optimized. This review offers fundamental principles and insight into designing advanced carbonyl materials for the electrodes of next-generation rechargeable batteries.

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“…[194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium. [194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium.…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

“…[194][195][196][197][198][199][200][201][202][203] For example, potassium ion batteries are potential sustainable battery systems for large-scale applications due to the abundance and low cost of potassium. [199] More interesting, when discharging this material to 0.01 V (vs K + /K), approximately 11 K + can be stored in this material, showing great potential as a high-capacity anode material for potassium batteries. [199,200] Recently, Hu's group reported that PTCDA exhibited reversible two-K + storage in the voltage range of 1.5-3.5 V (vs K + /K), affording an initial capacity of 131 mAh g -1 with 66.1% capacity retention over 200 cycles.…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

2017

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“…[7][8][9] In comparison to the natural abundance of lithium (20 ppm) in the Earth's crust, the abundances of Na (23 000 ppm) and K (17 000 ppm) seem infinite. [13][14][15][16][17] The advantages of KIBs are obvious: the abundant resource and the closer redox potential of K/K + (−2.93 V vs standard hydrogen electrode) to that of Li/Li + (−3.04 V) than that of Na/Na + (−2.71 V), implying their higher voltage plateau and energy density.Different K ion anode materials such as graphite, [13,18,19] nitrogen-doped graphene, [14,20] Prussian Blue, [21][22][23] and transition metal compound [24,25] have been Till last two years, the new concept of KIBs has begun to gain much more attention.…”

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confidence: 99%

Short‐Range Order in Mesoporous Carbon Boosts Potassium‐Ion Battery Performance

Wang

Zhou

Wang

et al. 2017

Advanced Energy Materials

468

297

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storage, sodium-ion batteries (NIBs) are attracting more attention because of the abundant sodium resource. [7][8][9] In comparison to the natural abundance of lithium (20 ppm) in the Earth's crust, the abundances of Na (23 000 ppm) and K (17 000 ppm) seem infinite. [10][11][12] Unlike NIBs, really few researches are focused on potassium-ion batteries (KIBs) in a long-trem period. Till last two years, the new concept of KIBs has begun to gain much more attention. [13][14][15][16][17] The advantages of KIBs are obvious: the abundant resource and the closer redox potential of K/K + (−2.93 V vs standard hydrogen electrode) to that of Li/Li + (−3.04 V) than that of Na/Na + (−2.71 V), implying their higher voltage plateau and energy density.Different K ion anode materials such as graphite, [13,18,19] nitrogen-doped graphene, [14,20] Prussian Blue, [21][22][23] and transition metal compound [24,25] have been

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“…[5] Later, the amorphous phase of FePO 4 as well as organic materials were also suggested as cathodes for KIBs. [6][7][8][9] Recently, K-ion insertion was shown to be possible in K 0.3 MnO 2 , [21] but the low K content of that material requires the use of K metal or pre-potassiated anodes.In this paper, we demonstrate highly reversible cycling of a P2-type K 0.6 CoO 2 cathode, and show implementation of a full cell KIB using a graphite anode. Alkali transition metal oxides with an ordered rock salt structure have been widely studied as promising cathodes for LIBs and NIBs because their layered framework allows topotactic de/intercalation of alkali ions, leading to excellent energy storage properties.…”

mentioning

confidence: 99%

K‐Ion Batteries Based on a P2‐Type K_0.6CoO₂ Cathode

Kim

et al. 2017

Advanced Energy Materials

260

191

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perspective, K-ion cells would be a more reasonable choice as a low-cost alternative to Li-ion since K has high natural abundance and a lower standard redox potential than Na (K/K + : −2.9 V and Na/ Na + : −2.7 V vs saturated hydrogen electrode in aqueous media). [1] Indeed, the potential of K/K + was theoretically calculated to be even more negative than that of Li/Li + in propylene carbonate, a well-known battery electrolyte solvent. [2] Experimental demonstration that the standard redox potential of K/K + is lower than that of Li/Li + by ≈0.15 V in ethylene carbonate/diethyl carbonate (EC/DEC) electrolyte is consistent with this prediction. [3] This interesting feature suggests that KIBs might potentially deliver a higher cell voltage than Na-ion batteries (NIBs) and even LIBs. In addition, K-ion technology would benefit from the fact that graphite can be used on the anode side [3,4] (as in Li ion), which is not the case for Na ion and has seriously limited application of Na-ion technology.Only a few cathode compounds have been reported to date for KIBs, [5][6][7][8][9] with most studies focusing on the development of anodes. [3,4,[10][11][12][13][14][15][16][17][18][19][20] For example, Eftekhari demonstrated that Prussian blue can reversibly store K ions in a nonaqueous electrolyte system. [5] Later, the amorphous phase of FePO 4 as well as organic materials were also suggested as cathodes for KIBs. [6][7][8][9] Recently, K-ion insertion was shown to be possible in K 0.3 MnO 2 , [21] but the low K content of that material requires the use of K metal or pre-potassiated anodes.In this paper, we demonstrate highly reversible cycling of a P2-type K 0.6 CoO 2 cathode, and show implementation of a full cell KIB using a graphite anode. Alkali transition metal oxides with an ordered rock salt structure have been widely studied as promising cathodes for LIBs and NIBs because their layered framework allows topotactic de/intercalation of alkali ions, leading to excellent energy storage properties. [22][23][24][25][26][27][28] Cyclability and rate capability of K x CoO 2 are shown to be very good, indicating that with further improvements K ion may be an effective technology for large-scale energy storage. To the best of our knowledge, this is the first demonstration of reversible K de/intercalation in P2-type layered K x CoO 2 in the range 0.33 < x < 0.68. This work creates new research opportunities for the development of KIBs as a particularly exciting and promising technology for large-scale energy storage applications. K-ion batteries are a potentially exciting and new energy storage technology that can combine high specific energy, cycle life, and good power capability, all while using abundant potassium resources. The discovery of novel cathodes is a critical step toward realizing K-ion batteries (KIBs). In this work, a layered P2-type K 0.6 CoO 2 cathode is developed and highly reversible K ion intercalation is demonstrated. In situ X-ray diffraction combined with electrochemical titration reveals that P2-type ...

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Organic electrode for non-aqueous potassium-ion batteries

Cited by 401 publications

References 40 publications

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Short‐Range Order in Mesoporous Carbon Boosts Potassium‐Ion Battery Performance

K‐Ion Batteries Based on a P2‐Type K_0.6CoO₂ Cathode

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Organic electrode for non-aqueous potassium-ion batteries

Cited by 401 publications

References 40 publications

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Short‐Range Order in Mesoporous Carbon Boosts Potassium‐Ion Battery Performance

K‐Ion Batteries Based on a P2‐Type K0.6CoO2 Cathode

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Product

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K‐Ion Batteries Based on a P2‐Type K_0.6CoO₂ Cathode