Na2.3Cu1.1Mn2O7−δ nanoflakes as enhanced cathode materials for high-energy sodium-ion batteries achieved by a rapid pyrosynthesis approach

2020 ◽  
Vol 8 (2) ◽  
pp. 770-778 ◽  
Author(s):  
Vaiyapuri Soundharrajan ◽  
Balaji Sambandam ◽  
Muhammad H. Alfaruqi ◽  
Sungjin Kim ◽  
Jeonggeun Jo ◽  
...  

Na2.3Cu1.1Mn2O7−δ nanoflakes prepared by an ultrafast pyrosynthesis approach are used as the positive electrode for SIBs. In situ GITT and XRD results support the occurrence of a single-phase reaction in the Na2.3Cu1.1Mn2O7−δ nanoflakes cathode during Na+ (de)intercalation.

2013 ◽  
Vol 06 (01) ◽  
pp. 1330001 ◽  
Author(s):  
JING XU ◽  
DAE HOE LEE ◽  
YING SHIRLEY MENG

Significant progress has been achieved in the research on sodium intercalation compounds as positive electrode materials for Na-ion batteries. This paper presents an overview of the breakthroughs in the past decade for developing high energy and high power cathode materials. Two major classes, layered oxides and polyanion compounds, are covered. Their electrochemical performance and the related crystal structure, solid state physics and chemistry are summarized and compared.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chenchen Wang ◽  
Luojia Liu ◽  
Shuo Zhao ◽  
Yanchen Liu ◽  
Yubo Yang ◽  
...  

AbstractLayered transition-metal oxides have attracted intensive interest for cathode materials of sodium-ion batteries. However, they are hindered by the limited capacity and inferior phase transition due to the gliding of transition-metal layers upon Na+ extraction and insertion in the cathode materials. Here, we report that the large-sized K+ is riveted in the prismatic Na+ sites of P2-Na0.612K0.056MnO2 to enable more thermodynamically favorable Na+ vacancies. The Mn-O bonds are reinforced to reduce phase transition during charge and discharge. 0.901 Na+ per formula are reversibly extracted and inserted, in which only the two-phase transition of P2 ↔ P’2 occurs at low voltages. It exhibits the highest specific capacity of 240.5 mAh g−1 and energy density of 654 Wh kg−1 based on the redox of Mn3+/Mn4+, and a capacity retention of 98.2% after 100 cycles. This investigation will shed lights on the tuneable chemical environments of transition-metal oxides for advanced cathode materials and promote the development of sodium-ion batteries.


2017 ◽  
Vol 5 (9) ◽  
pp. 4467-4477 ◽  
Author(s):  
Ivana Hasa ◽  
Stefano Passerini ◽  
Jusef Hassoun

Aluminum doping of the P2-type layered structure results in a Na-ion cathode material (Na0.6Ni0.22Al0.11Mn0.66O2) with excellent performance.


ChemSusChem ◽  
2017 ◽  
Vol 10 (23) ◽  
pp. 4704-4708 ◽  
Author(s):  
Ying Huang ◽  
Chun Fang ◽  
Rui Zeng ◽  
Yaojun Liu ◽  
Wang Zhang ◽  
...  

2018 ◽  
Vol 10 (29) ◽  
pp. 24564-24572 ◽  
Author(s):  
Huangxu Li ◽  
Zhian Zhang ◽  
Ming Xu ◽  
Weizhai Bao ◽  
Yanqing Lai ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20319-20326 ◽  
Author(s):  
Pingping Sun ◽  
Yuanting Wang ◽  
Xiuzhen Wang ◽  
Qingyu Xu ◽  
Qi Fan ◽  
...  

Na3V2(PO4)3 (NVP) is regarded as a promising cathode material for sustainable energy storage applications.


2019 ◽  
Vol 21 ◽  
pp. e00098 ◽  
Author(s):  
Yingchun Lyu ◽  
Yuchen Liu ◽  
Zhuo-Er Yu ◽  
Na Su ◽  
Yang Liu ◽  
...  

2020 ◽  
Vol 8 (24) ◽  
pp. 12055-12068
Author(s):  
Vaiyapuri Soundharrajan ◽  
Muhammad H. Alfaruqi ◽  
Seulgi Lee ◽  
Balaji Sambandam ◽  
Sungjin Kim ◽  
...  

NASICON-structured Na4VMn0.9Cu0.1(PO4)3 cotton candy-like cathode, which was employed for sodium-ion batteries, demonstrates superior electrochemical properties..


2018 ◽  
Vol 10 (4) ◽  
pp. 3562-3570 ◽  
Author(s):  
Seok Mun Kang ◽  
Jae-Hyuk Park ◽  
Aihua Jin ◽  
Young Hwa Jung ◽  
Junyoung Mun ◽  
...  

2017 ◽  
Vol 29 (33) ◽  
pp. 1701968 ◽  
Author(s):  
Jin-Zhi Guo ◽  
Peng-Fei Wang ◽  
Xing-Long Wu ◽  
Xiao-Hua Zhang ◽  
Qingyu Yan ◽  
...  

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