Improving the structural and cyclic stabilities of P2-type Na0.67MnO2 cathode material via Cu and Ti co-substitution for sodium ion batteries

2020 ◽  
Vol 56 (46) ◽  
pp. 6293-6296 ◽  
Author(s):  
Xueping Zhang ◽  
Feilong Qiu ◽  
Kezhu Jiang ◽  
Ping He ◽  
Min Han ◽  
...  
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Excellent Performance ◽  
Solid State Method ◽  
Co Substitution ◽  
State Method

An air-stable Na0.67Mn0.7Cu0.15Ti0.15O2 (NMCT) has been synthesized using a solid-state method. And it showed the excellent performance as a cathode material for sodium ion batteries.

Exploration of Na7Fe4.5(P2O7)4 as a cathode material for sodium-ion batteries

2016 ◽  
Vol 4 (42) ◽  
pp. 16531-16535 ◽  
Author(s):  
Yubin Niu ◽  
Maowen Xu ◽  
Bolei Shen ◽  
Chunlong Dai ◽  
Chang Ming Li
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Mechanical Milling ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Solid State Method ◽  
State Method ◽  
First Time

A novel Na7Fe4.5(P2O7)4 compound was fabricated as a cathode for sodium-ion batteries by a mechanical milling assisted solid state method for the first time.

Dual anionic substitution engineering for an advanced NASICON phosphate cathode in sodium-ion batteries

2021 ◽  
Author(s):  
Xin-Xin Zhao ◽  
Zhen-Yi Gu ◽  
Jin-Zhi Guo ◽  
Chen-De Zhao ◽  
Xiao-Tong Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Reaction Kinetics ◽  
Structural Evolution ◽  
Sodium Ion ◽  
Regulation Mechanism ◽  
Sodium Ion Batteries ◽  
Solid State Method ◽  
State Method

Dual anionic substitution materials of Na3V2(PO4)2O2−2xF1+2x are prepared using the solid-state method, and the regulation mechanism of different F/O ratios is studied by analyzing the structural evolution, electrochemical performance and reaction kinetics.

Na3.12Fe2.44(P2O7)2/multi-walled carbon nanotube composite as a cathode material for sodium-ion batteries

2015 ◽  
Vol 3 (33) ◽  
pp. 17224-17229 ◽  
Author(s):  
Yubin Niu ◽  
Maowen Xu ◽  
Chuanjun Cheng ◽  
ShuJuan Bao ◽  
Junke Hou ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Solid State ◽  
Cathode Material ◽  
Solid State Reaction ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Multi Walled Carbon Nanotube ◽  
Carbon Nanotube Composite

Na3.12Fe2.44(P2O7)2/multi-walled carbon nanotube (MWCNT) composite was fabricated by a solid state reaction and was further used to fabricate a cathode for sodium-ion batteries.

The enhanced rate performance of LiFe0.5Mn0.5PO4/C cathode material via synergistic strategies of surfactant-assisted solid state method and carbon coating

2015 ◽  
Vol 3 (3) ◽  
pp. 996-1004 ◽  
Author(s):  
Xue Zhou ◽  
Ye Xie ◽  
Yuanfu Deng ◽  
Xusong Qin ◽  
Guohua Chen
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Carbon Content ◽  
Carbon Coating ◽  
High Rate ◽  
Cycle Performance ◽  
Rate Performance ◽  
Solid State Method ◽  
State Method ◽  
Surfactant Assisted

A high rate and cycle performance LiFe0.5Mn0.5PO4/C material was obtained by synergies of a surfactant-assisted solid state method and carbon content.

Nanofiber networks of Na3V2(PO4)3 as a cathode material for high performance all-solid-state sodium-ion batteries

2017 ◽  
Vol 5 (11) ◽  
pp. 5273-5277 ◽  
Author(s):  
Rongtan Gao ◽  
Rui Tan ◽  
Lei Han ◽  
Yan Zhao ◽  
Zijian Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Network Structure ◽  
High Performance ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries

NVP with nanofiber network structure was used as cathode material for all-solid-state sodium ion batteries, exhibiting outstanding electrochemical performances.

Cu-doped P2-Na0.5Ni0.33Mn0.67O2 encapsulated with MgO as a novel high voltage cathode with enhanced Na-storage properties

2017 ◽  
Vol 5 (18) ◽  
pp. 8408-8415 ◽  
Author(s):  
Hari Vignesh Ramasamy ◽  
Karthikeyan Kaliyappan ◽  
Ranjith Thangavel ◽  
Vanchiappan Aravindan ◽  
Kisuk Kang ◽  
...  
Keyword(s):  
Solid State ◽  
High Voltage ◽  
Mixed Oxide ◽  
Sodium Ion ◽  
Sodium Ion Battery ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
State Method ◽  
Storage Properties

We report a novel P2-type Na0.5Ni0.26Cu0.07Mn0.67O2 (NCM) mixed oxide obtained by conventional solid-state method as a prospective cathode for sodium-ion battery (SIB) applications.

The Effect of Thermal Treatment Temperature and Duration on Electrochemistry Performance of LiNi1/3Co1/3Mn1/3O2 Cathode Materials for Lithium-ion Batteries

2018 ◽  
Vol 14 (5) ◽  
pp. 440-447 ◽  
Author(s):  
Gang Sun ◽  
Chenxiao Jia ◽  
Shuanlong Di ◽  
Jianning Zhang ◽  
Qinghua Du ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Treatment ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Raw Materials ◽  
Lithium Ion ◽  
Solid State Method ◽  
State Method

Background: LiNi1/3Mn1/3Co1/3O2 derived from the solid-state method suffers from the problem of significant irreversible charge-discharge behavior. To improve the electrochemical performance of LiNi1/3Mn1/3Co1/3O2, there are several important factors, such as starting raw materials, precursor, preparation method and conditions. In this work, the layered LiNi1/3Mn1/3 Co1/3O2 material was prepared by solid-state reaction. By varying the temperature and duration of synthesis thermal treatment, the greater crystallinity and well-ordered layered LiNi1/3Mn1/3Co1/3O2 cathode material has been successfully synthesized. The structural properties, morphology and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 powders have been investigated in detail. Methods: LiNi1/3Co1/3Mn1/3O2 cathode material was synthesized via a high-temperature solid-state method. Stoichiometric amounts of Ni(CH3COO)2•4H2O, Co(CH3COO)2•4H2O, Mn(CH3COO)2• 4H2O, and Li2CO3 as raw materials were homogenized mixed in a ball mill for 8 h at 240 rpm. By varying the temperature and duration of synthesis thermal treatment, LiNi1/3Co1/3Mn1/3O2 cathode materials with different electrochemistry performance were achieved. (a) The effect of the temperature of synthesis thermal treatment on electrochemistry performance of LiNi1/3Co1/3Mn1/3O2 was explored by calcining the above mixed powder at 800°C, 850°C, 900°C, 950°C, and 1000°C for 12 h in air at a rate of 5°C min-1. Then the target product was prepared at last. The obtained compound was named as N-800, N-850, N-900, N-950 and N-1000, respectively. (b) In order to explore the effect of the duration of synthesis thermal treatment on electrochemistry performance of LiNi1/3 Co1/3Mn1/3O2 cathode material, the above mixed raw materials were calcined at 900°C for 4 h, 8 h, 12 h, 16 h and 20 h in air at a rate of 5°C min-1. The obtained compound was named as N-4, N-8, N- 12, N-16 and N-20, respectively. The N-900 and N-12 are the same sample. Results: The cathode material sintered at 900°C for 12 h revealed the best electrochemical performance, with high-capacity and recyclability compared with other materials. Its initial discharge capacity attains 182.4 mAh g-1 at 0.2 C in the voltage range of 2.5-4.6 V, which can be attributed to its greater crystallinity and well-ordered layered structure. Compared with other studies on lithium-ion batteries given in literature, this work provides a sample, optimal and mild synthetic conditions to synthesize the cathode materials with great electrochemistry performance. Conclusion: A greater crystallinity and well-ordered layered LiNi1/3Mn1/3Co1/3O2 powders had been successfully synthesized by mixing raw materials under various temperatures and duration of synthesis thermal treatment. The XRD results indicated the I(003)/I(104) values of N-900 (N-12) is 1.591 larger than 1.2, which illustrates no undesirable cation mixing to be occurred. In this work, from the results of electrochemical property experiments, it can be indicated that the optimal synthesized conditions are 900°C for 12 h. When the calcination temperature is too low and the calcined time is too short, the material is poorly crystalline and has a poor layer structure. When the calcination temperature is too high and the calcined time is too long, lithium salt is evaporated completely during the calcination process resulting in a poor electrochemistry performance.

An improved solid-state method for synthesizing LiNi0.5Mn1.5O4 cathode material for lithium ion batteries

2017 ◽  
Vol 715 ◽  
pp. 304-310 ◽  
Author(s):  
Yunlong He ◽  
Jie Zhang ◽  
Qiu Li ◽  
Yong Hao ◽  
Jianwen Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Solid State Method ◽  
State Method
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