NiCo2O4 nanosheets supported on Ni foam for rechargeable nonaqueous sodium–air batteries

Liu, Weiming; Yin, Wenwen; Ding, Fei; Lin, Song; Fu, Zheng‐Wen

doi:10.1016/j.elecom.2014.05.021

Cited by 77 publications

(33 citation statements)

References 11 publications

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“…Yadegari et al [4] have also reported an air electrode composed of vertically grown nitrogen-doped carbon nanotubes on carbon paper at currentd ensities of 0.1, 0.2 and 0.5 mA cm À2 with ac apacity of 11,9and 6mAh cm À2 ,r espectively.I na ddition, graphene-based materials have also been studied at much lower applied currents than in this work, leadingt ol ow specific capacity (e.g.,0 .05-0.2 mAh cm À2 ). [30] Therefore, the discharge rate applied in this study is the highest amongN a-O 2 battery studies, which might be related to the unique combination and synergy of the CNF electrode and the ionic liquid electrolyte. [30] Therefore, the discharge rate applied in this study is the highest amongN a-O 2 battery studies, which might be related to the unique combination and synergy of the CNF electrode and the ionic liquid electrolyte.…”

Section: Mpyr][tfsi] Ionic Liquid Andt He 166 Mol %N Atfsi/[c 4 Mpyr]mentioning

confidence: 85%

“…[25][26][27] Other air electrodes investigated include carbon spheres [28] and catalysts such as CaMnO 3 [29] and NiCo 2 O 4 . [30] Therefore, the discharge rate applied in this study is the highest amongN a-O 2 battery studies, which might be related to the unique combination and synergy of the CNF electrode and the ionic liquid electrolyte.…”

Section: Mpyr][tfsi] Ionic Liquid Andt He 166 Mol %N Atfsi/[c 4 Mpyr]mentioning

confidence: 85%

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Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

et al. 2019

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A series of electrospun binder‐free carbon nanofiber (CNF) mats have been studied as air cathodes for Na–oxygen batteries using a pyrrolidinium‐based electrolyte and compared with the commercial air cathode Toray 090. A tenfold increase in the discharge capacity is attained when using CNFs in comparison with Toray 090, affording a discharge capacity of 1.53 mAh cm−2 at a high discharge rate of 0.63 mA cm−2. The good specific discharge and charge capacities of these CNFs are determined by the void space and the highly accessible surface of the carbon fiber. Furthermore, a threefold increase has been attained in terms of specific capacity by controlling the flooding of the air cathode and hence the location of the three‐phase boundary within the CNF mat. The enhancement in performance has been correlated to the morphology, composition, distribution, and location of the discharge products. Sodium superoxide and peroxide were identified as the discharge products and, more importantly, the common side reaction discharge products, which are known to be detrimental to battery performance (including sodium fluoride, sodium hydroxide, and formate), were not observed, exemplifying the stability of the pyrrolidinium‐based electrolyte and these binder‐free CNF air cathodes.

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Section: Mpyr][tfsi] Ionic Liquid Andt He 166 Mol %N Atfsi/[c 4 Mpyr]mentioning

confidence: 85%

Section: Mpyr][tfsi] Ionic Liquid Andt He 166 Mol %N Atfsi/[c 4 Mpyr]mentioning

confidence: 85%

Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

et al. 2019

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“…In a low donor number (DN) solvent such as acetonitrile (ACN), Na 2 O 2 can be produced due to disproportionation of NaO 2 . Using catalyst‐loaded cathode or nitrogen‐doped carbon as cathode, Na 2 O 2 is generated as identified by better XRD and Raman . Until now, there is no consensus on formation of Na 2 O 2 in ether‐based Na−O 2 batteries.…”

Section: Challenges At the Cathodesmentioning

confidence: 99%

“…It is also possible to generate Na 2 O 2 in low DN solvent of ACN by disproportionation of NaO 2 . Alternatively, when catalyst‐loaded cathode or nitrogen‐doped carbon is employed, Na 2 O 2 may be electrochemically produced following a surface‐growth path and competing against the formation of NaO 2 via a solution‐precipitation path . At the same time, NaO 2 can also degrade into Na 2 O 2 ⋅ 2H 2 O or NaOH, making the complicated composition of discharge products.…”

Section: Challenges At the Cathodesmentioning

confidence: 99%

Recent Development of Aprotic Na−O₂ Batteries

Zhao

Qin

Chan

et al. 2019

Batteries & Supercaps

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The development of batteries with high energy density and low costs involves chemistry beyond lithium-ion batteries. Rechargeable sodium-oxygen (NaÀ O 2 ) batteries make two essential steps forward: i) replacing Li by Na to remove the bottleneck in resources supply and ii) using oxygen from air to raise the theoretical energy density. A lot of progress has been made in performance and understanding of NaÀ O 2 battery since its first report in 2012. However, there remain significant challenges, such as the instability of discharge products, dendrite growth of Na metal, and the crossover of superoxide. A timely review is given here to summarize the challenges encountered in the components of the NaÀ O 2 battery. Insights are offered on sodium anode protection, morphology dynamics at the cathode, amphibian presence of superoxide, and the roles of electrolyte. Bright prospects in further development of aprotic NaÀ O 2 batteries are envisioned.

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“…Besides,t he inorganic 2D nanosheet hasa lso been used in Na-air and Zn-air batteries. Liu et al [164] reported NiCo 2 O 4 nanosheets supported on Ni foam showinga ni nitial discharge capacity of 1762 mAh g À1 with a low polarizationo f0 .96 Va t2 0mAg À1 ,w hen appliedf or a non-aqueous sodium-air battery.Z hao et al [165] reported a hybrid materialc onsists of MOFs and Ti 3 C 2 T x nanosheet as an electrode for Zn-air battery showingasmall voltage gap of charginga nd discharging of 1.79 V, which was 0.19 Vs maller www.chemeurj.org than that of standard IrO 2 -based material. Moreover,t his material displayed no obvious performance loss after 25 cycling tests.…”

Section: Metal-o 2 Batteriesmentioning

confidence: 99%

Recent Applications of 2D Inorganic Nanosheets for Emerging Energy Storage System

Patil

et al. 2018

Chemistry A European J

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Among many types of nanostructured inorganic materials, highly anisotropic 2D nanosheets provide unique advantages in designing and synthesizing efficient electrode and electrocatalyst materials for novel energy storage technologies. 2D inorganic nanosheets boast lots of unique characteristics such as high surface area, short ion diffusion path, tailorable compositions, and tunable electronic structures. These merits of 2D inorganic nanosheets render them promising candidate materials as electrodes for diverse secondary batteries and supercapacitors, and electrocatalysts. A wide spectrum of examples is presented for inorganic nanosheet-based electrodes and electrocatalysts. Future perspectives in research about 2D nanosheet-based functional materials are discussed to provide insight for the development of next-generation energy storage systems using 2D nanostructured materials.

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NiCo2O4 nanosheets supported on Ni foam for rechargeable nonaqueous sodium–air batteries

Cited by 77 publications

References 11 publications

Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

Recent Development of Aprotic Na−O₂ Batteries

Recent Applications of 2D Inorganic Nanosheets for Emerging Energy Storage System

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NiCo2O4 nanosheets supported on Ni foam for rechargeable nonaqueous sodium–air batteries

Cited by 77 publications

References 11 publications

Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

Controlling the Three‐Phase Boundary in Na–Oxygen Batteries: The Synergy of Carbon Nanofibers and Ionic Liquid

Recent Development of Aprotic Na−O2 Batteries

Recent Applications of 2D Inorganic Nanosheets for Emerging Energy Storage System

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Product

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About

Recent Development of Aprotic Na−O₂ Batteries