scholarly journals Enhancement of Y5−xPrxSb3−yMy (M = Sn, Pb) Electrodes for Lithium- and Sodium-Ion Batteries by Structure Disordering and CNTs Additives

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4331
Author(s):  
Volodymyr Pavlyuk ◽  
Wojciech Ciesielski ◽  
Nazar Pavlyuk ◽  
Damian Kulawik ◽  
Agnieszka Balińska ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Partial Substitution ◽  
Sodium Ion Batteries ◽  
Cycle Stability ◽  
High Entropy ◽  
Electrochemical Lithiation ◽  
Effective Additive ◽  
Structure Disordering

The maximally disordered (MD) phases with the general formula Y5−xPrxSb3−yMy (M = Sn, Pb) are formed with partial substitution of Y by Pr and Sb by Sn or Pb in the binary Y5Sb3 compound. During the electrochemical lithiation and sodiation, the formation of Y5-xPrxSb3-yMyLiz and Y5−xPrxSb3−yMyNaz maximally disordered–high entropy intermetallic phases (MD-HEIP), as the result of insertion of Li/Na into octahedral voids, were observed. Carbon nanotubes (CNT) are an effective additive to improve the cycle stability of the Y5−xPrxSb3−yMy (M = Sn, Pb) anodes for lithium-ion (LIBs) and sodium-ion batteries (SIBs). Modification of Y5−xPrxSb3−ySny alloys by carbon nanotubes allowed us to significantly increase the discharge capacity of both types of batteries, which reaches 280 mAh · g−1 (for LIBs) and 160 mAh · g−1 (for SIBs), respectively. For Y5−xPrxSb3−yPby alloys in which antimony is replaced by lead, these capacities are slightly smaller and are 270 mAh · g−1 (for LIBs) and 155 mAh · g−1 (for SIBs), respectively. Results show that structure disordering and CNT additives could increase the electrode capacities up to 30% for LIBs and up to 25% for SIBs.

scholarly journals Novel P2-type layered medium-entropy ceramics oxide as cathode material for sodium-ion batteries

2021 ◽  
Author(s):  
Shengxue Yan ◽  
Shaohua Luo ◽  
Liu Yang ◽  
Jian Feng ◽  
Pengwei Li ◽  
...  
Keyword(s):  
Electrode Material ◽  
Rational Design ◽  
Configurational Entropy ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Cycle Stability ◽  
Energy Storage Devices ◽  
Solid State Method ◽  
Voltage Range ◽  
High Entropy

AbstractHigh-entropy oxides (HEOs) and medium-entropy oxides (MEOs) are new types of single-phase solid solution materials. MEOs have rarely been reported as positive electrode material for sodium-ion batteries (SIBs). In this study, we first proposed the concept of the application of MEOs in SIBs. P2-type 3-cation oxide Na2/3Ni1/3Mn1/3Fe1/3O2 (NaNMF) and 4-cation oxide Na2/3Ni1/3Mn1/3Fe1/3−xAlxO2 (NaNMFA) were prepared using the solid-state method, rather than the doping technology. In addition, the importance of the concept of entropy stabilization in material performance and battery cycling was demonstrated by testing 3-cation (NaNMF) and 4-cation (NaNMFA) oxides in the same system. Thus, NaNMFA can provide a reversible capacity of about 125.6 mAh·g−1 in the voltage range of 2–4.2 V, and has enhanced cycle stability. The capacity and decay law of the MEO batteries indicate that the configurational entropy (1.28 R (NaNMFA) > 1.10 R (NaNMF)) of the cationic system, is the main factor affecting the structural and cycle stability of the electrode material. This work emphasizes that the rational design of MEOs with novel structures and different electrochemically active elements may be the strategy for exploring high-performance SIB cathode materials in next-generation energy storage devices.

Ultrafine Co1−xS nanoparticles embedded in a nitrogen-doped porous carbon hollow nanosphere composite as an anode for superb sodium-ion batteries and lithium-ion batteries

Nanoscale ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 2804-2811 ◽  
Author(s):  
Caifu Dong ◽  
Lijun Guo ◽  
Yanyan He ◽  
Limei Shang ◽  
Yitai Qian ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Rate Performance ◽  
Cycle Stability ◽  
Hollow Nanosphere ◽  
Nitrogen Doped

Co1−xS, Co1−xS@C, and Co1−xS are selectively and facilely fabricated. Among them, Co1−xS/C delivers best cycle stability and rate performance when applied as an anode material for SIBs and LIBs.

scholarly journals Novel P2-Type Layered Medium-Entropy Ceramics Oxide as Cathode Material for Sodium Ion Batteries

2021 ◽  
Author(s):  
S.H. Luo ◽  
Sheng-xue Yan ◽  
Liu Yang ◽  
Jian Feng ◽  
Peng-wei Li ◽  
...  
Keyword(s):  
Electrode Material ◽  
High Performance ◽  
Rational Design ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Cycle Stability ◽  
Energy Storage Devices ◽  
Solid State Method ◽  
Voltage Range ◽  
High Entropy

Abstract Similar to high-entropy oxides (HEOs), medium-entropy oxides (MEOs) are a new type of single-phase solid solution material. As a positive electrode material for sodium ion batteries (SIBs), it has been rarely reported. Here, we first proposed the concept of the application of MEOs in SIBs. P2-type 3-cation oxide Na2/3Ni1/3Mn1/3Fe1/3O2 (NaNMF) and 4-cation oxide Na2/3Ni1/3Mn1/3Fe1/3−xAlxO2 (NaNMFA) were prepared by solid-state method, rather than the doping technology. In addition, the importance of the concept of entropy stabilization in material performance and battery cycling was demonstrated by testing 3-cation oxide (NaNMF) and 4-cation oxide in (NaNMFA) the same system. As a result, NaNMFA can provide a reversible capacity of about 125.6 mAh g–1 in the voltage range of 2-4.2 V, and has enhanced cycle stability. The capacity and decay law of the mid-entropy oxide battery indicate that the configuration entropy (1.28R (NaNMFA) > 1.10R (NaNMF)) of the cationic system is the main factor affecting the structural stability and cycle stability of the electrode material. This work emphasizes that the rational design of MEOs with novel structures and different electrochemically active elements may be an effective strategy for exploring high-performance SIBs cathode materials in next-generation energy storage devices.

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

2021 ◽  
Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

Recent advances in ferromagnetic metal sulfides and selenides as anodes for sodium- and potassium-ion batteries

2021 ◽  
Author(s):  
Yuhan Wu ◽  
Chenglin Zhang ◽  
Huaping Zhao ◽  
Yong Lei
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Metal Sulfides ◽  
Sodium Ion Batteries ◽  
Next Generation ◽  
Cost Competitiveness ◽  
Sodium And Potassium

In next-generation rechargeable batteries, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have been considered as attractive alternatives to lithium-ion batteries due to their cost competitiveness. Anodes with complicated electrochemical mechanisms...

An insight into the effect of g-C3N4 support on the enhanced performance of ZnS nanoparticles as anode material for lithium-ion and sodium-ion batteries

2021 ◽  
pp. 137715
Author(s):  
Dipa D. Pathak ◽  
Dimple P. Dutta ◽  
Balaji R. Ravuri ◽  
Anand Ballal ◽  
Akhilesh C. Joshi ◽  
...  
Keyword(s):  
Anode Material ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Zns Nanoparticles ◽  
Insight Into
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