High-performance aqueous sodium-ion batteries with K0.27MnO2 cathode and their sodium storage mechanism

Liu, Yang; Qiao, Yu; Zhang, Wuxing; Xu, Henghui; Li, Zhen; Shen, Yue; Yuan, Lixia; Hu, Xianluo; Dai, Xiang; Huang, Yunhui

doi:10.1016/j.nanoen.2014.02.010

Cited by 140 publications

(74 citation statements)

References 36 publications

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“…[16][17][18][19][20][21][22] It was found that the specific capacitances of MnO 2 -based cathode materials are usually less than 200 F g −1 when the electrode mass loading is larger than 1 mg cm −2 , [23] which seriously limits the energy density of MnO 2 -based ASCs. [24,25] In a previous work, our group demonstrated that the pseudocapacitance of MnO 2 is highly dependent on the amount of preinserted cations, which can induce the Mn 3+ /Mn 4+ redox couple www.advmat.de www.advancedsciencenews.com and increase the specific capacitance. [24,25] In a previous work, our group demonstrated that the pseudocapacitance of MnO 2 is highly dependent on the amount of preinserted cations, which can induce the Mn 3+ /Mn 4+ redox couple www.advmat.de www.advancedsciencenews.com and increase the specific capacitance.…”

Section: Doi: 101002/adma201700804mentioning

confidence: 99%

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

et al. 2017

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The voltage limit for aqueous asymmetric supercapacitors is usually 2 V, which impedes further improvement in energy density. Here, high Na content Birnessite Na MnO nanosheet assembled nanowall arrays are in situ formed on carbon cloth via electrochemical oxidation. It is interesting to find that the electrode potential window for Na MnO nanowall arrays can be extended to 0-1.3 V (vs Ag/AgCl) with significantly increased specific capacitance up to 366 F g . The extended potential window for the Na MnO electrode provides the opportunity to further increase the cell voltage of aqueous asymmetric supercapacitors beyond 2 V. To construct the asymmetric supercapacitor, carbon-coated Fe O nanorod arrays are synthesized as the anode and can stably work in a negative potential window of -1.3 to 0 V (vs Ag/AgCl). For the first time, a 2.6 V aqueous asymmetric supercapacitor is demonstrated by using Na MnO nanowall arrays as the cathode and carbon-coated Fe O nanorod arrays as the anode. In particular, the 2.6 V Na MnO //Fe O @C asymmetric supercapacitor exhibits a large energy density of up to 81 Wh kg as well as excellent rate capability and cycle performance, outperforming previously reported MnO -based supercapacitors. This work provides new opportunities for developing high-voltage aqueous asymmetric supercapacitors with further increased energy density.

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Section: Doi: 101002/adma201700804mentioning

confidence: 99%

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

et al. 2017

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“…[ 1 ] To date, a variety of RAMB on a basis of monovalent ions (e.g., Li + , Na + and K + ) intercalation chemistry have been explored. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Among them, "rocking-chair" RAMB based on Li + as shuttle ions such as VO 2 4 have been studied extensively. [2][3][4][5][6][7][8] Due to the higher natural abundance of sodium and/or potassium resource than lithium resource, RAMB with Na + shuttles or K + shuttles are of greater interests.…”

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confidence: 99%

“…[9][10][11][12][13][14][15][16][17][18][19] But so far only a few systems of RAMB based on sodium-ion and/or potassium-ion technology have been reported, and most of them suffer from the problem of low energy density due to the low average operation voltage (<1.2 V). [9][10][11][12][13][14][15][16][17] Very recently, our group has proposed a unique concept of mixed monovalence ions including Li + /Na + , Li + /K + and Na + /K + to construct a new family of RAMB (Na 0. 22 [ 18,19 ] Among them, the NaTi 2 (PO 4 ) 3 /Ni 1 Zn 1 HCF battery has an average operation voltage of 1.45 V, which is higher than other aqueous batteries based on sodium-ion and/or potassium-ion technologies.…”

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confidence: 99%

Towards High‐Voltage Aqueous Metal‐Ion Batteries Beyond 1.5 V: The Zinc/Zinc Hexacyanoferrate System

Zhang

Liang

Zhou

et al. 2014

Advanced Energy Materials

1,053

731

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“…Liu et al found that the potassium ion intercalated manganese oxide (K 0.27 MnO 2 ) with large ion diffusion channels shows superior cycling stability and rate capability for sodium storage. [ 12 ] This inspiring work indicates that the potassium-containing compounds have great potentials in energy storage. On the other hand, phosphates have been widely studied because of their high redox potential, good safety, and low cost.…”

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confidence: 99%

Novel K₃V₂(PO₄)₃/C Bundled Nanowires as Superior Sodium‐Ion Battery Electrode with Ultrahigh Cycling Stability

Wang

Niu

Meng

et al. 2015

Advanced Energy Materials

160

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is located below lithium in the periodic table and shares similar physical/chemical properties with lithium in many aspects. Thus, sodium is a promising candidate for replacing lithium in energy storage systems. [ 11 ] Recently, sodium ion batteries have been widely reconsidered for largescale applications. Undoubtedly, the exploration and development of sodium-ion batteries is a new and important direction in the fi eld of energy storage.Recently, potassium containing compounds have been investigated in sodiumion batteries. Liu et al. found that the potassium ion intercalated manganese oxide (K 0.27 MnO 2 ) with large ion diffusion channels shows superior cycling stability and rate capability for sodium storage. [ 12 ] This inspiring work indicates that the potassium-containing compounds have great potentials in energy storage. On the other hand, phosphates have been widely studied because of their high redox potential, good safety, and low cost. Compared with metal oxides, phosphates possess higher electrochemical voltage and thus higher energy density due to the inductive effect of PO 4 3− . [ 4,5 ] In addition, the phosphates also provide higher thermal stability for elevated temperature operation. However, the phosphates face the defects of regular impure phase and poor electronic conductivity. [ 4,5 ] The formation of impurity phases can be suppressed by thoroughly mixing the reactants before sintering, and the conductivity can be improved by compositing with carbon. [13][14][15][16][17][18][19] Among the phosphate compounds, Li 3 V 2 (PO 4 ) 3 [ 20,21 ] and Na 3 V 2 (PO 4 ) 3 [22][23][24][25] have been widely studied as lithium or sodium-ion battery cathodes. For example, Jian et al. reported the synthesis of Na 3 V 2 (PO 4 ) 3 /C composite by a one-step solid state reaction; when used as the cathod for sodium-ion battery, it delivers an initial discharge capacity of 93 mAh g −1 .[ 23 ] Saravanan et al. reported the preparation of porous Na 3 V 2 (PO 4 ) 3 /C with excellent cycling stability and superior rate capability in sodium-ion battery. [ 25 ] Despite the numerous reports on Li 3 V 2 (PO 4 ) 3 and Na 3 V 2 (PO 4 ) 3 , the crystal structure and electrochemical performance of K 3 V 2 (PO 4 ) 3 has never been reported. Herein, a novel potassium containing phosphate material, K 3 V 2 (PO 4 ) 3 , is designed and explored in energy storage. The K 3 V 2 (PO 4 ) 3 /C bundled nanowires were synthesized by a facile organic acid-assisted method. With a highly stable framework for sodium storage, porous nanostructure for fast Sodium-ion battery has captured much attention due to the abundant sodium resources and potentially low cost. However, it suffers from poor cycling stability and low diffusion coeffi cient, which seriously limit its widespread application. Here, K 3 V 2 (PO 4 ) 3 /C bundled nanowires are fabricated usinga facile organic acid-assisted method. With a highly stable framework, nanoporous structure, and conductive carbon coating, the K 3 V 2 (PO 4 ) 3 /C bundled nanowires manifest excellent e...

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High-performance aqueous sodium-ion batteries with K0.27MnO2 cathode and their sodium storage mechanism

Cited by 140 publications

References 36 publications

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

Towards High‐Voltage Aqueous Metal‐Ion Batteries Beyond 1.5 V: The Zinc/Zinc Hexacyanoferrate System

Novel K₃V₂(PO₄)₃/C Bundled Nanowires as Superior Sodium‐Ion Battery Electrode with Ultrahigh Cycling Stability

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High-performance aqueous sodium-ion batteries with K0.27MnO2 cathode and their sodium storage mechanism

Cited by 140 publications

References 36 publications

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na0.5MnO2 Nanosheet Assembled Nanowall Arrays

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na0.5MnO2 Nanosheet Assembled Nanowall Arrays

Towards High‐Voltage Aqueous Metal‐Ion Batteries Beyond 1.5 V: The Zinc/Zinc Hexacyanoferrate System

Novel K3V2(PO4)3/C Bundled Nanowires as Superior Sodium‐Ion Battery Electrode with Ultrahigh Cycling Stability

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High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

High‐Performance 2.6 V Aqueous Asymmetric Supercapacitors based on In Situ Formed Na_0.5MnO₂ Nanosheet Assembled Nanowall Arrays

Novel K₃V₂(PO₄)₃/C Bundled Nanowires as Superior Sodium‐Ion Battery Electrode with Ultrahigh Cycling Stability