A comprehensive study of the role of transition metals in O3-type layered Na[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, and 0.8) cathodes for sodium-ion batteries

2016 ◽  
Vol 4 (46) ◽  
pp. 17952-17959 ◽  
Author(s):  
Jang-Yeon Hwang ◽  
Chong S. Yoon ◽  
Ilias Belharouak ◽  
Yang-Kook Sun
Keyword(s):  
Thermal Stability ◽  
Transition Metals ◽  
Discharge Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Capacity Retention ◽  
Specific Discharge ◽  
Co Precipitation ◽  
Comprehensive Study

Spherical O3-type layered Na[NixCoyMnz]O2 cathodes were synthesized by co-precipitation. An increase in the Ni concentration results in an increase of specific discharge capacity but the corresponding capacity retention and thermal stability progressively decreased.

scholarly journals A high rate and stable electrode consisting of a Na3V2O2X(PO4)2F3−2X–rGO composite with a cellulose binder for sodium-ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (35) ◽  
pp. 21820-21826 ◽  
Author(s):  
P. Ramesh Kumar ◽  
Young Hwa Jung ◽  
Syed Abdul Ahad ◽  
Do Kyung Kim
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Capacity Retention ◽  
Full Cell ◽  
Enhanced Electrochemical Performance

Na3V2O2X(PO4)2F3−2X–rGO with CMC binder shows the enhanced electrochemical performance; it exhibits 98% capacity retention at 0.1C rate over 250 cycles. Also, it remits discharge capacity of 98 mA h g−1 at 0.2C in a full cell with a NaTi2(PO4)3–MWCNT.

scholarly journals Flexible sodium-ion batteries using electrodes from Samanea saman tree leaf-derived carbon quantum dots decorated with SnO2 and NaVO3

Clean Energy ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 354-374
Author(s):  
Baskar Thangaraj ◽  
Surawut Chuangchote ◽  
Nutthapon Wongyao ◽  
Pravin Raj Solomon ◽  
Kamonchanok Roongraung ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Discharge Capacity ◽  
Carbon Quantum Dots ◽  
Sodium Ion ◽  
Excitation Wavelength ◽  
Sodium Ion Batteries ◽  
Specific Discharge ◽  
Samanea Saman ◽  
Discharge Capacities

Abstract Carbonaceous materials with large interlayer spacing and disordered structure are considered suitable as electrodes in sodium-ion batteries so as to overcome the problem encountered in conventional electrodes. In this study, carbon quantum dots (CQDs) decorated with SnO2 and NaVO3 are used as electrodes in the fabrication of flexible Na-ion batteries. CQDs are prepared from dead leaves of the Samanea saman tree through alkaline-peroxide treatment and hydrothermal carbonization. As-prepared CQDs exhibit a quantum yield of 21.03% at an excitation wavelength of 360 nm. Various separators such as indium-doped tin oxide/polyoxyethylene tridecyl ether (ITO/PTE), rice paper (RP), silicone with three big holes (SIL BH), silicone with many small holes (SIL SH) and cellulose paper (CP) have been tried in flexible Na-ion batteries. SIL SH achieved higher specific capacitance (881 F g–1) than other separators due to the function of many small holes on the surface of the silicone. The SIL SH separator delivered higher discharge capacities of 141 and 114 mC g–1 at 1.5 and 2.5 V than SIL BH. The RP separator delivered specific discharge capacities of 1087 and 347 mC g–1 in the 1st and 50th cycles, respectively, at 1 V. The RP separator delivered a high initial specific discharge capacity of 698 mC g–1 at 2 V and maintained a good discharge capacity of 222 mC g–1 in the 50th cycle. As compared to RP, SIL SH delivered high specific discharge capacity of 4246 in 1st cycle at 2 V but maintained a capacity of 71 mC g–1 in the 50th cycle. This study reveals the scope of developing flexible Na-ion batteries with high capacity and cyclability using carbonaceous materials derived from the leaves of the S. saman tree. Carbon quantum dots (CQDs)-decorated with SnO2 and NaVO3 are used as electrodes in the fabrication of flexible Na-ion batteries. CQDs exhibit a quantum yield of 21% at the excitation wavelength of 360 nm. The electrochemical performances of fabricated batteries are investigated by cyclic voltammetry.

scholarly journals Synthesis and electrochemical performance of NaV6O15 microflowers for lithium and sodium ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (47) ◽  
pp. 29481-29488 ◽  
Author(s):  
Fang Hu ◽  
Wei Jiang ◽  
Yidi Dong ◽  
Xiaoyong Lai ◽  
Li Xiao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Current Density ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Capacity Retention ◽  
First Discharge Capacity

High first discharge capacity of 255 mA h g−1 (vs. Li+/Li) and 130 mA h g−1 (vs. Na+/Na) were observed in NaV6O15 microflowers and the capacity retention reaches 105% and 64% after 50 cycles at the current density of 100 mA g−1 and 50 mA g−1, respectively.

Revealing the role of dopants in mitigating degradation phenomena in sodium-ion layered cathodes

2021 ◽  
Vol 23 (3) ◽  
pp. 2038-2045
Author(s):  
Kyoungmin Min ◽  
Young-Han Shin
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
High Stability ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Layered Cathode Materials ◽  
Layered Cathodes

Prevention of the degradation of sodium-based layered cathode materials is the key to developing high-performance and high-stability sodium-ion batteries.

Electrospun graphene-wrapped Na6.24Fe4.88(P2O7)4 nanofibers as a high-performance cathode for sodium-ion batteries

2017 ◽  
Vol 19 (26) ◽  
pp. 17270-17277 ◽  
Author(s):  
Yubin Niu ◽  
Maowen Xu ◽  
Chunlong Dai ◽  
Bolei Shen ◽  
Chang Ming Li
Keyword(s):  
Discharge Capacity ◽  
High Performance ◽  
Electronic Conductivity ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Rate Discharge ◽  
High Rate Discharge

Na6.24Fe4.88(P2O7)4 is one of the intensively investigated polyanionic compounds and has shown high rate discharge capacity, but its relatively low electronic conductivity hampers the high performance of the batteries.

Rational Design of Ti-Based Oxygen Redox Layered Oxides for Advanced Sodium-ion Batteries

2021 ◽  
Author(s):  
Jaewoon Lee ◽  
Sojung Koo ◽  
Jinwoo Lee ◽  
Duho Kim
Keyword(s):  
Transition Metals ◽  
Redox Reactions ◽  
Rational Design ◽  
Alkali Metals ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Layered Oxides

Considering Mn4+ (3d3)-based cations, various layered oxides (A[AyM1-y]O2, where A and M refer to alkali metals and transition metals, respectively) exhibiting oxygen-redox reactions have been investigated extensively to achieve high...

Nanostructured potassium and sodium ion incorporated Prussian blue frameworks as cathode materials for sodium-ion batteries

2017 ◽  
Vol 53 (40) ◽  
pp. 5569-5572 ◽  
Author(s):  
Yang Liu ◽  
Dandan He ◽  
Ruimin Han ◽  
Gangya Wei ◽  
Yun Qiao
Keyword(s):  
Prussian Blue ◽  
Cathode Materials ◽  
Sodium Ion ◽  
Precipitation Method ◽  
Sodium Ion Batteries ◽  
Co Precipitation

Nanostructured KxNayMnFe(CN)6 (x + y ≤ 2) has been synthesized via a facile co-precipitation method.

Multi-function NiFe2O4 Nanoparticles for Sodium-ion Battery, Sensing and photocatalysis

2021 ◽  
Author(s):  
Patil S. B. ◽  
Shivaraj B. Patil ◽  
Deepa S ◽  
Udayabhanu Udayabhanu ◽  
G. Nagaraju ◽  
...  
Keyword(s):  
Sodium Ion ◽  
Precipitation Method ◽  
Sodium Ion Battery ◽  
Sodium Ion Batteries ◽  
Nife2o4 Nanoparticles ◽  
Co Precipitation

NiFe2O4 nanoparticles (NPs) have attracted great attention in vast fields such as sodium-ion batteries (NaIBs), bio-sensing, and catalysis. In this direction, herein, NiFe2O4 NPs were synthesized by simple co-precipitation method...

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