scholarly journals Cathodes: Rational Design of Na(Li1/3 Mn2/3 )O2 Operated by Anionic Redox Reactions for Advanced Sodium-Ion Batteries (Adv. Mater. 33/2017)

2017 ◽  
Vol 29 (33) ◽  
Author(s):  
Duho Kim ◽  
Maenghyo Cho ◽  
Kyeongjae Cho
Keyword(s):  
Redox Reactions ◽  
Rational Design ◽  
Sodium Ion ◽  
Sodium Ion 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...

Rational design of Na(Li1/3Mn1/2Cr1/6)O2 exhibiting cation–anion-coupled redox reactions with superior electrochemical, thermodynamic, atomic, and chemomechanical properties for advanced sodium-ion batteries

2018 ◽  
Vol 6 (37) ◽  
pp. 18036-18043 ◽  
Author(s):  
Duho Kim ◽  
Maenghyo Cho ◽  
Kyeongjae Cho
Keyword(s):  
Energy Density ◽  
Redox Reactions ◽  
Rational Design ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Batteries

Based on a cation–anion-coupled redox paradigm, Na(Li1/3Mn1/2Cr1/6)O2 is systematically designed to use rational anion redox reactions (O2−/O−) for high energy density cathodes in sodium-ion batteries.

Realizing Three-Electron Redox Reactions in NASICON-Structured Na3 MnTi(PO4 )3 for Sodium-Ion Batteries

2019 ◽  
Vol 9 (9) ◽  
pp. 1803436 ◽  
Author(s):  
Ting Zhu ◽  
Ping Hu ◽  
Xuanpeng Wang ◽  
Zhenhui Liu ◽  
Wen Luo ◽  
...  
Keyword(s):  
Redox Reactions ◽  
Sodium Ion ◽  
Sodium Ion Batteries

scholarly journals Rational Design of Layered SnS2 on Ultralight Graphene Fiber Fabrics as Binder-Free Anodes for Enhanced Practical Capacity of Sodium-Ion Batteries

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Zongling Ren ◽  
Jie Wen ◽  
Wei Liu ◽  
Xiaoping Jiang ◽  
Yanheng Dong ◽  
...  
Keyword(s):  
Rational Design ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Sodium Ion ◽  
Carbon Cloth ◽  
Sodium Ion Batteries ◽  
Active Components ◽  
Weight Percentage ◽  
Practical Capacity ◽  
Binder Free

Abstract Generally, the practical capacity of an electrode should include the weight of non-active components such as current collector, polymer binder, and conductive additives, which were as high as 70 wt% in current reported works, seriously limiting the practical capacity. This work pioneered the usage of ultralight reduced graphene fiber (rGF) fabrics as conductive scaffolds, aiming to reduce the weight of non-active components and enhance the practical capacity. Ultrathin SnS2 nanosheets/rGF hybrids were prepared and used as binder-free electrodes of sodium-ion batteries (SIBs). The interfused graphene fibers endow the electrode a porous, continuous, and conductive network. The in situ phase transformation from SnO2 to SnS2 could preserve the strong interfacial interactions between SnS2 and graphene. Benefitting from these, the designed binder-free electrode delivers a high specific capacity of 500 mAh g−1 after 500 cycles at a current rate of 0.5 A g−1 with almost 100% Coulombic efficiency. Furthermore, the weight percentage of SnS2 in the whole electrode could reach up to 67.2 wt%, much higher than that of common electrode configurations using Cu foil, Al foil, or carbon cloth, significantly highlighting the ultralight characters and advantages of the rGF fabrics for using as binder-free electrodes of SIBs.

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