On Improving the Cycling Stability of P2-Type Na0.67Ni0.33Mn0.67O2 Cathode Material By Ti-Substitution for Na-Ion Batteries

2019 ◽  
Author(s):  
Debanjana Pahari ◽  
Sreeraj Puravankara
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Electrode Materials ◽  
Cycling Stability ◽  
Partial Substitution ◽  
Li Ion Batteries ◽  
Initial Discharge Capacity ◽  
Initial Discharge ◽  
Li Ion ◽  
Ti Substitution

The extensive studies over the last decade have established Na-ion batteries (NIBs) as one of the cheaperalternatives to Li-ion batteries. P2-type Na0.67Ni0.33Mn0.67O2 has stood out among layered oxidebased electrode materials providing the best over-all electrochemical performance. The electrodes can exertup to 92.5% of its theoretical capacity (160 mAhg-1) at a voltage higher than 3 V accounted for the Ni2+/Ni4+redox. However, at higher voltages, electrodes suffer irreversibility due to P2-O2 structural transition.Recent studies in suppressing this transition by partial substitution with various metals on either Ni or Mnlattice site have suggested enhancing cycling stability. In this study, a novel cathode material with Ti-substitution on Ni site, P2-type Na0.67Ni0.25Ti0.08Mn0.67O2 has been synthesized via solid-state synthesismethod and characterized electrochemically. Na0.67Ni0.25Ti0.08Mn0.67O2 electrodes have been observed tobe highly reversible at higher voltage ranges. The electrodes have an initial discharge capacity of 125 mAhg-1and can retain around 84% of this capacity (105 mAhg-1) even after 50 cycles at 0.1C when cycled at an uppercut-off voltage of 4.3 V. Na0.67Ni0.25Ti0.08Mn0.67O2 electrodes are believed to suppress the irreversible P2-O2 transformation by diverting the charging reaction through a more reversible P2-OP4transition.

On Improving the Cycling Stability of P2-Type Na0.67Ni0.33Mn0.67O2 Cathode Material By Ti-Substitution for Na-Ion Batteries

2019 ◽  
Author(s):  
Debanjana Pahari ◽  
Sreeraj Puravankara
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Discharge Capacity ◽  
Synthesis Method ◽  
Cycling Stability ◽  
Solid State Synthesis ◽  
Initial Discharge Capacity ◽  
Initial Discharge ◽  
Ti Substitution ◽  
Solid State Synthesis Method

A novel cathode material with Ti-substitution on Ni site, P2-type Na0.67Ni0.25Ti0.08Mn0.67O2 has been synthesized via solid-state synthesis method and characterized electrochemically. Na0.67Ni0.25Ti0.08Mn0.67O2 electrodes have been observed tobe highly reversible at higher voltage ranges. The electrodes have an initial discharge capacity of 125 mAhg-1and can retain around 84% of this capacity (105 mAhg-1) even after 50 cycles at 0.1C when cycled at an uppercut-off voltage of 4.3 V. Na0.67Ni0.25Ti0.08Mn0.67O2 electrodes are believed to suppress the irreversible P2-O2 transformation by diverting the charging reaction through a more reversible P2-OP4transition.

Organic electrode materials for non-aqueous, aqueous, and all-solid-state Na-ion batteries

2021 ◽  
Author(s):  
Kathryn Holguin ◽  
Motahareh Mohammadiroudbari ◽  
Kaiqiang Qin ◽  
Chao Luo
Keyword(s):  
Solid State ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Li Ion Batteries ◽  
Organic Electrode ◽  
Li Ion

Na-ion batteries (NIBs) are promising alternatives to Li-ion batteries (LIBs) due to the low cost, abundance, and high sustainability of sodium resources. However, the high performance of inorganic electrode materials...

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.

Particle Size Effects of the Ni-Rich Cathode Material in All-Solid-State Li-Ion Batteries

2020 ◽  
Vol MA2020-02 (5) ◽  
pp. 922-922
Author(s):  
Kookjin Heo ◽  
Jongkwan Lee ◽  
Min-Young Kim ◽  
Dae-yeong Im ◽  
Woo-ram Gil ◽  
...  
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Cathode Material ◽  
Size Effects ◽  
Li Ion Batteries ◽  
Particle Size Effects ◽  
Li Ion

Addition of yttrium oxide as an effective way to enhance the cycling stability of LiCoO2 cathode material for Li-ion batteries

2020 ◽  
Vol 355 ◽  
pp. 115426 ◽  
Author(s):  
Hubert Ronduda ◽  
Magdalena Zybert ◽  
Anna Szczęsna ◽  
Tomasz Trzeciak ◽  
Andrzej Ostrowski ◽  
...  
Keyword(s):  
Cathode Material ◽  
Yttrium Oxide ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Licoo2 Cathode

Ultrathin Na1.08V3O8 nanosheets—a novel cathode material with superior rate capability and cycling stability for Li-ion batteries

2012 ◽  
Vol 5 (3) ◽  
pp. 6173 ◽  
Author(s):  
Haiyan Wang ◽  
Suqin Liu ◽  
Yu Ren ◽  
Wenjie Wang ◽  
Aidong Tang
Keyword(s):  
Cathode Material ◽  
Rate Capability ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals A novel low-temperature solid-state route for nanostructured cubic garnet Li7La3Zr2O12 and its application to Li-ion battery

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62656-62667 ◽  
Author(s):  
P. Jeevan Kumar ◽  
K. Nishimura ◽  
M. Senna ◽  
A. Düvel ◽  
P. Heitjans ◽  
...  
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Discharge Capacity ◽  
Li Ion Battery ◽  
Initial Discharge Capacity ◽  
Solid State Route ◽  
Initial Discharge ◽  
Model Cell ◽  
Li Ion

Garnet Li7La3Zr2O12 nanoparticles with 1 mass% Al were prepared via a solid-state route at 750 °C within 3 h. A model cell sandwiched by Li and LiCoO2 exhibited initial discharge capacity of 64 μA h cm−2 μm−1, being 93% of LiCoO2 theoretical value.

Role of fluorine surface modification in improving electrochemical cyclability of concentration gradient Li[Ni0.73Co0.12Mn0.15]O2 cathode material for Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26307-26316 ◽  
Author(s):  
Jingpeng Wang ◽  
Chunyu Du ◽  
Chunqiu Yan ◽  
Xing Xu ◽  
Xiaoshu He ◽  
...  
Keyword(s):  
Surface Modification ◽  
Cathode Material ◽  
Concentration Gradient ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Superior Cycling Stability

The fluorine-modified Li[Ni0.73Co0.12Mn0.15]O2−xFx materials exhibit superior cycling stability, which is attributed to the synergistic protection of the surface NiO-like phase and fluoride layer.

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