Rational design of forest-like nickel sulfide hierarchical architectures with ultrahigh areal capacity as a binder-free cathode material for hybrid supercapacitors

2018 ◽  
Vol 6 (27) ◽  
pp. 13178-13190 ◽  
Author(s):  
G. Seeta Rama Raju ◽  
E. Pavitra ◽  
Goli Nagaraju ◽  
S. Chandra Sekhar ◽  
Seyed Majid Ghoreishian ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Rational Design ◽  
Nickel Sulfide ◽  
Cycling Stability ◽  
Hybrid Supercapacitors ◽  
Binder Free ◽  
Hierarchical Architectures ◽  
Excellent Cycling Stability ◽  
Areal Capacity

The forest-like NiS hierarchical architectures demonstrated superior electrochemical performance with excellent cycling stability.

scholarly journals Construction of CuCo2O4@CuCo2O4 hierarchical nanowire arrays grown on Ni foam for high-performance supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3983-3991 ◽  
Author(s):  
Yan Zhang ◽  
Jie Xu ◽  
Yayun Zheng ◽  
Yingjiu Zhang ◽  
Xing Hu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Cycling Stability ◽  
Nanowire Arrays ◽  
Ni Foam ◽  
Step Method ◽  
Binder Free ◽  
Excellent Cycling Stability

CuCo2O4@CuCo2O4 hierarchical nanowire arrays were fabricated directly on Ni foam via a two-step method. The binder-free electrode displayed high electrochemical performance with excellent cycling stability.

Effect of sulfur doping on structural reversibility and cycling stability of a Li2MnSiO4 cathode material

2018 ◽  
Vol 47 (35) ◽  
pp. 12337-12344 ◽  
Author(s):  
Xia Wu ◽  
Shi-Xi Zhao ◽  
Lü-Qiang Yu ◽  
Jin-Lin Yang ◽  
Ce-Wen Nan
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
Cycling Stability ◽  
Initial Discharge Capacity ◽  
Sulfur Doping ◽  
Initial Discharge ◽  
Excellent Cycling Stability

Sulfur has been successfully employed into Li2MnSiO4 and results in a high initial discharge capacity and excellent cycling stability.

Flexible freestanding sandwich-structured sulfur cathode with superior performance for lithium–sulfur batteries

2014 ◽  
Vol 2 (23) ◽  
pp. 8623-8627 ◽  
Author(s):  
Jiangxuan Song ◽  
Zhaoxin Yu ◽  
Terrence Xu ◽  
Shuru Chen ◽  
Hiesang Sohn ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cycling Stability ◽  
Superior Performance ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Excellent Cycling Stability ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Flexible freestanding sandwich-structured sulfur cathodes are developed for lithium–sulfur batteries, which exhibit excellent cycling stability and rate capability. A high areal capacity of ∼4 mA h cm−2 is also demonstrated based on this new cathode configuration.

NiCo2O4@NiO hybrid arrays with improved electrochemical performance for pseudocapacitors

2015 ◽  
Vol 3 (26) ◽  
pp. 13900-13905 ◽  
Author(s):  
Xijun Liu ◽  
Junfeng Liu ◽  
Xiaoming Sun
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Capacitors ◽  
High Capacity ◽  
Cycling Stability ◽  
Hierarchical Architecture ◽  
Excellent Cycling Stability

A novel hierarchical NiCo2O4@NiO array is developed for electrochemical capacitors. Such a 3D hybrid electrode exhibits high capacity and excellent cycling stability. The enhanced performance could be attributed to the synergetic contribution of the composite and unique hierarchical architecture.

Low-crystalline tungsten trioxide anode with superior electrochemical performance for flexible solid-state asymmetry supercapacitor

2018 ◽  
Vol 6 (19) ◽  
pp. 8986-8991 ◽  
Author(s):  
Jiayi Chen ◽  
Haiyan Wang ◽  
Jiang Deng ◽  
Chunmei Xu ◽  
Yong Wang
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Porous Carbon ◽  
Tungsten Trioxide ◽  
Cycling Stability ◽  
Carbon Cloth ◽  
Excellent Cycling Stability ◽  
Low Crystalline

Assembling a flexible solid-state asymmetry SC, based on LC-WO3in situ grown on porous carbon cloth, achieves an energy density of 7.6 mW h cm−3 and excellent cycling stability with 92% capacitance retention after 10 000 cycles.

Synthesis of polypyrrole–titanium dioxide brush-like nanocomposites with enhanced supercapacitive performance

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63719-63724 ◽  
Author(s):  
Yan Gao ◽  
Yanzhou Wang ◽  
Xin Xu ◽  
Kun Ding ◽  
Demei Yu
Keyword(s):  
Titanium Dioxide ◽  
Electrochemical Performance ◽  
Electrode Material ◽  
Cycling Stability ◽  
Supercapacitive Performance ◽  
Excellent Cycling Stability ◽  
Enhanced Electrochemical Performance

Polypyrrole–titanium dioxide brush-like nanocomposites show enhanced electrochemical performance and excellent cycling stability as an electrode material for supercapacitors.

Hierarchical nanostructured FeS2 hollow microspheres for lithium-ion batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (69) ◽  
pp. 36597-36602 ◽  
Author(s):  
Yourong Wang ◽  
Xiaofang Qian ◽  
Wei Zhou ◽  
Hantao Liao ◽  
Siqing Cheng
Keyword(s):  
Electrochemical Performance ◽  
Ambient Temperature ◽  
Lithium Ion Batteries ◽  
Hollow Microsphere ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Hollow Microspheres ◽  
Excellent Cycling Stability

The as-obtained FeS2 hollow microsphere electrode delivered excellent cycling stability and electrochemical performance after the first cycle at ambient temperature.

scholarly journals Electrochemically Inert Li2MnO3: The Key to Improving the Cycling Stability of Li-Rich Manganese Oxide Used in Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4751
Author(s):  
Lian-Bang Wang ◽  
He-Shan Hu ◽  
Wei Lin ◽  
Qing-Hong Xu ◽  
Jia-Dong Gong ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Manganese Oxide ◽  
Lithium Ion Batteries ◽  
Retention Rate ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Structural Defects ◽  
Hydrothermal Route

Lithium-rich manganese oxide is a promising candidate for the next-generation cathode material of lithium-ion batteries because of its low cost and high specific capacity. Herein, a series of xLi2MnO3·(1 − x)LiMnO2 nanocomposites were designed via an ingenious one-step dynamic hydrothermal route. A high concentration of alkaline solution, intense hydrothermal conditions, and stirring were used to obtain nanoparticles with a large surface area and uniform dispersity. The experimental results demonstrate that 0.072Li2MnO3·0.928LiMnO2 nanoparticles exhibit a desirable electrochemical performance and deliver a high capacity of 196.4 mAh g−1 at 0.1 C. This capacity was maintained at 190.5 mAh g−1 with a retention rate of 97.0% by the 50th cycle, which demonstrates the excellent cycling stability. Furthermore, XRD characterization of the cycled electrode indicates that the Li2MnO3 phase of the composite is inert, even under a high potential (4.8 V), which is in contrast with most previous reports of lithium-rich materials. The inertness of Li2MnO3 is attributed to its high crystallinity and few structural defects, which make it difficult to activate. Hence, the final products demonstrate a favorable electrochemical performance with appropriate proportions of two phases in the composite, as high contents of inert Li2MnO3 lower the capacity, while a sufficient structural stability cannot be achieved with low contents. The findings indicate that controlling the composition through a dynamic hydrothermal route is an effective strategy for developing a Mn-based cathode material for lithium-ion batteries.

P3-type layered K0.48Mn0.4Co0.6O2: a novel cathode material for potassium-ion batteries

2020 ◽  
Vol 56 (15) ◽  
pp. 2272-2275 ◽  
Author(s):  
Krishnakanth Sada ◽  
Prabeer Barpanda
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
Potassium Ion ◽  
Cycling Stability ◽  
Type K ◽  
Excellent Cycling Stability

A P3-type K0.48Mn0.4Co0.6O2 oxide forms a 3 V economical cathode for potassium-ion batteries, having a discharge capacity of 64 mA h g−1 coupled with excellent cycling stability.

scholarly journals Development of P3-K0.69CrO2 as an ultra-high-performance cathode material for K-ion batteries

2018 ◽  
Vol 11 (10) ◽  
pp. 2821-2827 ◽  
Author(s):  
Jang-Yeon Hwang ◽  
Jongsoon Kim ◽  
Tae-Yeon Yu ◽  
Seung-Taek Myung ◽  
Yang-Kook Sun
Keyword(s):  
Ion Exchange ◽  
Cathode Material ◽  
High Performance ◽  
Cycling Stability ◽  
Excellent Cycling Stability ◽  
Power Capability ◽  
Electrochemical Ion Exchange

P3-K0.69CrO2 cathode is successfully synthesized via an electrochemical ion-exchange route and delivers excellent cycling stability and power capability in K-ion batteries.

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