Uniform yolk−shell Fe7S8@C nanoboxes as a general host material for the efficient storage of alkali metal ions

Weng, Wangsuo; Xu, Jie; Lai, Chenling; Xu, Zhenhua; Du, Yichen; Lin, Jun; Zhou, Xiaosi

doi:10.1016/j.jallcom.2019.152732

Cited by 81 publications

(42 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, studies have concentrated on supercapacitors operating at room temperature. [1][2][3][4][5][6][7][8][9][10] In daily life, electron devices operating at high temperatures, such as electric vehicles, aircraft power electronics, and large Moreover, BCN materials possess excellent chemical stability and high-temperature stability. [31][32][33][34] Hence, BCN materials can be regarded as potential electrode materials for high-temperature supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

Liang

Shi

et al. 2021

Small

View full text Add to dashboard Cite

communication stations of switching 5G signal are inevitable. In that case, supercapacitors that can work at high temperatures must be explored to expand the application range and improve equipment security. However, studies on the development of high-temperature supercapacitors are few because of several challenges, such as: poor cycling stability of the electrode material at high temperature and low boiling point of the electrolyte. [11][12][13] Therefore, supercapacitors operating at high temperatures impose strict requirements on materials and electrolytes.Carbon-based supercapacitors have elicited extensive attention because of their rapid charge/discharge rate, high electrical conductivity, and good thermostability. [14][15][16][17][18][19][20] Extensive effort has been exerted to obtain high-temperature, carbon-based supercapacitors with improved the performance. For example, Yury et al. reported on wide range of temperature supercapacitors based on active carbon (AC). By adjusting the size and shape of AC, the double-layer capacitors could be operated in a wide range of temperature from −100 to 60 °C. [21] Bao et al. reported an all-solid-state planar with activated graphene as the cathode; the planar showed excellent electrochemical performance and safety at 80 °C. [22] However, the cycling stability was unsatisfactory, and the inherent low energy density of pure carbon resulted in a limited application. Motivated by this challenging issue, researchers have conducted studies to improve the electrochemical property. Recent research has shown that the doping of nitrogen (N), boron (B), phosphorus (P), sulfur (S), and fluorine (F) heteroatoms in carbon frame can improve the stability and energy density of carbon materials. [23][24][25][26][27] For example, Feng et al. reported graphene aerogels with N and B doping; the aerogels showed an enhanced energy density of 8.65 W h kg −1 and improved cycling stability close to 100% after 1000 cycles. [28] Our previous work also proved that the introduction of B and N can alter the electrostatic attraction of materials, thereby expanding the operating voltage window to 4.8 V and resulting in a high energy density of 200 Wh kg −1 . [29] Furthermore, the inserted B and N in C lattice structures can effectively improve the charge density and activate the C electron around B and N. [30] Carbon nanomaterials have elicited much research interest in the energy storage field, but most of them cannot be used at high temperatures. Thus, a supercapacitor with high energy and desired stability at high temperatures is urgently required. Herein, BCN nanotubes (BCNNTs) with excellent performance at high temperatures are generated on carbon fibers by optimizing the ratio of B and N. The nanotubes' morphology can effectively alleviate the structural damage caused by the rapid adsorption/ desorption of the electrolyte during long-time charge/discharge cycles at high temperatures, thus improving the high-temperature cycle stability. The symmetric supercapacitors that are assembled with...

show abstract

Section: Introductionmentioning

confidence: 99%

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

Liang

Shi

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…In recent years, lithium-ion batteries (LIBs) have demonstrated their importance in powering devices [1][2][3][4][5][6][7][8][9][10]. The wide application of LIBs has been severely limited due to the scarcity and uneven geographical distribution of lithium resources [11][12][13][14][15][16][17][18][19][20]. Because of the abundant sodium element reserves, low price, and similar physicochemical properties to LIBs, sodium-ion batteries (SIBs) have recently been considered as an important potential energy storage device [21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

层状钒酸钾应用于高性能高温钠离子电池

et al. 2021

View full text Add to dashboard Cite

The high-temperature sodium-ion batteries (SIBs) used for large-scale energy storage have attracted extensive attention in recent years. However, the development of SIBs is still hampered mainly by their poor charge/discharge efficiency and stability, necessitating the search for appropriate electrodes. A simple potassium ion intercalation process is used herein to obtain the potassium vanadate (KV 3 O 8 ) nanobelts. When serving as the anode for SIBs at a high temperature (60°C), the KV 3 O 8 nanobelts display superior sodium storage performance with a high capacity of 414 mA h g −1 at 0.1 A g −1 , remarkable rate capability (220 mA h g −1 at 20 A g −1 ), and super-long cycle life (almost no capacity fading at 10 A g −1 over 1000 cycles). Moreover, the ex-situ X-ray powder diffraction reveals no structural changes throughout the whole charge/discharge process, which further confirms their outstanding stability, indicating KV 3 O 8 nanobelts are a promising candidate for high-temperature SIBs.

show abstract

“…A high capacity of 304.8 mAhg −1 was attained at a current density of 5 Ag −1 . The efficiency improvement of NIBs/KIBs could be also pursued with the synthesis of other types of electrode based materials to manifest excellent electrochemical behavior and outstanding rate performance in such electrodes [10–12]. Consequently, as stated above, the theoretical study of intercalation and storage capacity of alkali metals such as Na, Li and K has been the subject of research in 2D pure materials and a few cases of heterostructures comprising carbon and antimony, but no works on the composite materials Sb 2 S 3 /carbon and Sb 2 S 3 /doped‐carbon are available in open literature relating the diffusion of Na atoms and their corresponding storage capacity.…”

Section: Introductionmentioning

confidence: 99%

Exploring the enhanced performance of Sb₂S₃/doped‐carbon composites as potential anode materials for sodium‐ion batteries: A density functional theory approach

Hachimi

Guillén‐López

Jaramillo-Quintero

et al. 2021

Int J of Quantum Chemistry

View full text Add to dashboard Cite

The improvement of performance in sodium ion batteries is a subject of intense research. In this work, a first principle calculations study at the density functional level on the adsorption process of Na adatoms into Sb2S3/carbon (Sb2S3/CM) and Sb2S3/heteroatom doped‐carbon (Sb2S3/S‐CM, Sb2S3/Sb‐CM) is presented. The sulfur and antimony doped‐carbon substrates enhance the adsorption energies, charge transfer, specific capacities and the diffusion properties of Na adatoms into the Sb2S3/S‐CM and Sb2S3/Sb‐CM composite systems. The Na storage capacity trend and the open circuit voltage profile follows the trend observed in previous experimental results. This work explores perspectives through tailoring 2D carbon anodes with doping heteroatoms in the presence of adsorbed Sb2S3 for an outstanding storage capacity and cycling stability architecture.

show abstract

Uniform yolk−shell Fe7S8@C nanoboxes as a general host material for the efficient storage of alkali metal ions

Cited by 81 publications

References 52 publications

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

层状钒酸钾应用于高性能高温钠离子电池

Exploring the enhanced performance of Sb₂S₃/doped‐carbon composites as potential anode materials for sodium‐ion batteries: A density functional theory approach

Contact Info

Product

Resources

About

Uniform yolk−shell Fe7S8@C nanoboxes as a general host material for the efficient storage of alkali metal ions

Cited by 81 publications

References 52 publications

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

层状钒酸钾应用于高性能高温钠离子电池

Exploring the enhanced performance of Sb2S3/doped‐carbon composites as potential anode materials for sodium‐ion batteries: A density functional theory approach

Contact Info

Product

Resources

About

Exploring the enhanced performance of Sb₂S₃/doped‐carbon composites as potential anode materials for sodium‐ion batteries: A density functional theory approach