Single crystalline Na2Ti3O7rods as an anode material for sodium-ion batteries

Wang, Wei; Yu, Chenxia; Liu, Yingjun; Hou, Jungang; Zhu, Hongmin; Jiao, Shuqiang

doi:10.1039/c2ra22050d

Cited by 98 publications

(66 citation statements)

References 14 publications

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“…2a at C/ 2.5 rate (corresponding to one mole sodium storage per mole of Na 2 Ti 3 O 7 based on theoretical capacity of 88.9 mAh/g). In this voltage window, one mole of Na 2 Ti 3 O 7 can accommodate two moles of sodium, resulting in a charge (Na extraction) capacity of 178 mAh/g, consistent with previous reports [1][2][3][4][5][6][9][10][11]. Please note that the long first cycle discharge is due to electrolyte decomposition at such reducing voltages resulting in solid electrolyte interphase (SEI) formation on the anode and is not related to irreversible sodium uptake by Na 2 Ti 3 O 7 [4][5][6].…”

Section: Resultssupporting

confidence: 83%

“…2a). In fact, this voltage step can also be clearly seen in the first discharge profiles of this material in other reports [1][2][3][4][5][6]9,10]. Such a voltage step is not related to the voltage step phenomenon reported by us previously [7] as the step arises from the working electrode (WE), not the sodium metal counter electrode (CE), and the WE-CE profile smoothly follows that of the WE [7,12].…”

Section: Resultssupporting

confidence: 60%

“…The Kapton tape cover delayed phase transformation to Na 2 Ti 3 O 7 long enough to obtain reliable XRD patterns. Please note that the same ex-situ XRD experiments were performed on the Na 2 Ti 3 O 7 /C electrodes Electrochemistry Communications 61 (2015) [10][11][12][13] prepared from the solvothermal synthesis and the results were identical as that with solid-state synthesized Na 2 Ti 3 O 7 . However, owing to its sub-micrometric particle size, the signal-to-noise ratio was quite low and hence, this data have not been shown.…”

Section: Methodsmentioning

confidence: 85%

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Introducing a 0.2 V sodium-ion battery anode: The Na2Ti3O7 to Na3−xTi3O7 pathway

Rudola

Sharma

Balaya

2015

Electrochemistry Communications

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Section: Resultssupporting

confidence: 83%

Section: Resultssupporting

confidence: 60%

Section: Methodsmentioning

confidence: 85%

See 1 more Smart Citation

Introducing a 0.2 V sodium-ion battery anode: The Na2Ti3O7 to Na3−xTi3O7 pathway

Rudola

Sharma

Balaya

2015

Electrochemistry Communications

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“…However, when used as the negative electrode in SIBs, graphite is electrochemically inactive, and only a limited number of sodium ions can be intercalated into graphite. [5] In recent years, many materials, including carbonaceous materials, [6][7][8][9][10][11][12][13][14][15] as well as Na 2 Ti 3 O 7 , [16][17][18][19][20] Na 4 Ti 5 O 12 , [21] TiO 2 , [22][23][24] SnO 2 , [25,26] and alloys, [27][28][29][30][31] Moreover, to demonstrate the practical applicability of HC electrode, a full cell was fabricated using NaCrO 2 as the positive electrode, and its performance was investigated for the first time at 90 ºC.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of hard carbon negative electrodes for ionic liquid-based sodium ion batteries over a wide temperature range

Ding

Nohira

Hagiwara

et al. 2015

Electrochimica Acta

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Please cite this article as: Changsheng Ding, Toshiyuki Nohira, Rika Hagiwara, Atsushi Fukunaga, Shoichiro Sakai, Koji Nitta, Electrochemical performance of hard carbon negative electrodes for ionic liquid-based sodium ion batteries over a wide temperature range, Electrochimica Acta http://dx.Abstract Sodium ion batteries (SIBs) have been attracting much attention as promising next-generation energy storage devices for large-scale applications. The major safety issue with SIBs, which arises from the flammability and volatility of conventional organic solvent-based electrolytes, is resolved by adopting an ionic liquid (IL) electrolyte. However, there are only a few reports on the study of negative electrodes in ILs. Here, we report the electrochemical performance of a hard carbon (HC) negative electrode in Na[FSA]-[C 3 C 1 pyrr][FSA] (FSA = bis(fluorosulfonyl)amide, C 3 C 1 pyrr = N-methyl-N-propylpyrrolidinium) IL over a wide temperature range of −10 ºC to 90 ºC.High-temperature operation, which is realized for the first time by using an IL, can take full advantage of the high capacity of HC even at a very high discharge rate of 1000 mA (g-HC) -1 : the discharge capacity is 230 mAh (g-HC) -1 at 90 ºC and 25 mAh (g-HC) -1 at 25 ºC. Moreover, surprisingly stable cycleability is observed for the HC electrode at 90 ºC, i.e. a capacity retention ratio of 84% after 500 cycles. Finally, a high full-cell voltage of 2.8 V and stable full-cell operation with Coulombic efficiency higher than 99% are achieved for the first time when using NaCrO 2 as the positive electrode at 90 ºC.

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“…[372][373][374][375] Munoz-Marquez et al discovered that the instability of the SEI formed on Na 2 Ti 3 O 7 anodes during the charge process results in a poor cycle stability. [ 376 ] The SEI is partially dissolved during the charge process, and the SEI instability involves continuous degradation of the electrolyte upon repeated battery operation.…”

Section: (24 Of 38)mentioning

confidence: 99%

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Kim

Zhang

et al. 2016

Advanced Energy Materials

868

595

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Grid‐scale energy storage systems (ESSs) that can connect to sustainable energy resources have received great attention in an effort to satisfy ever‐growing energy demands. Although recent advances in Li‐ion battery (LIB) technology have increased the energy density to a level applicable to grid‐scale ESSs, the high cost of Li and transition metals have led to a search for lower‐cost battery system alternatives. Based on the abundance and accessibility of Na and its similar electrochemistry to the well‐established LIB technology, Na‐ion batteries (NIBs) have attracted significant attention as an ideal candidate for grid‐scale ESSs. Since research on NIB chemistry resurged in 2010, various positive and negative electrode materials have been synthesized and evaluated for NIBs. Nonetheless, studies on NIB chemistry are still in their infancy compared with LIB technology, and further improvements are required in terms of energy, power density, and electrochemical stability for commercialization. Most recent progress on electrode materials for NIBs, including the discovery of new electrode materials and their Na storage mechanisms, is briefly reviewed. In addition, efforts to enhance the electrochemical properties of NIB electrode materials as well as the challenges and perspectives involving these materials are discussed.

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Single crystalline Na₂Ti₃O₇rods as an anode material for sodium-ion batteries

Cited by 98 publications

References 14 publications

Introducing a 0.2 V sodium-ion battery anode: The Na2Ti3O7 to Na3−xTi3O7 pathway

Introducing a 0.2 V sodium-ion battery anode: The Na2Ti3O7 to Na3−xTi3O7 pathway

Electrochemical performance of hard carbon negative electrodes for ionic liquid-based sodium ion batteries over a wide temperature range

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

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