Enhanced electrochemical performance of LiMnPO 4 /C prepared by microwave-assisted solvothermal method

Su, Jing; Liu, Zhenzhen; Long, Yunfei; Younan, Hua; Lv, Xuewei; Wen, Yan-Xuan

doi:10.1016/j.electacta.2015.05.105

Cited by 17 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These conditions are however far from the realistic case in which an actual battery works and that requires fast charge processes. Only few reports on LMP-based cathodes have adopted fast charge protocols, and all of them based on composite electrode formulations that invariably contain a considerable fraction of carbon and polymeric binder (more than 25% in weight). ,, Also, carbon was present not only as coating layer but also in the form of additives (e.g., carbon black powders) that were deemed necessary to enhance the electric conductivity. At the cathodic working potentials, both binder and carbon are inactive for Li + intercalation/deintercalation.…”

Section: Introductionmentioning

confidence: 99%

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Chen¹,

Dilena²,

Paolella

et al. 2016

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

LiMnPO4 is an attractive cathode material for the next-generation high power Li-ion batteries, due to its high theoretical specific capacity (170 mA h g–1) and working voltage (4.1 V vs Li+/Li). However, two main drawbacks prevent the practical use of LiMnPO4: its low electronic conductivity and the limited lithium diffusion rate, which are responsible for the poor rate capability of the cathode. The electronic resistance is usually lowered by coating the particles with carbon, while the use of nanosize particles can alleviate the issues associated with poor ionic conductivity. It is therefore of primary importance to develop a synthetic route to LiMnPO4 nanocrystals (NCs) with controlled size and coated with a highly conductive carbon layer. We report here an effective surface etching process (using LiPF6) on colloidally synthesized LiMnPO4 NCs that makes the NCs dispersible in the aqueous glucose solution used as carbon source for the carbon coating step. Also, it is likely that the improved exposure of the NC surface to glucose facilitates the formation of a conductive carbon layer that is in intimate contact with the inorganic core, resulting in a high electronic conductivity of the electrode, as observed by us. The carbon coated etched LiMnPO4-based electrode exhibited a specific capacity of 118 mA h g–1 at 1C, with a stable cycling performance and a capacity retention of 92% after 120 cycles at different C-rates. The delivered capacities were higher than those of electrodes based on not etched carbon coated NCs, which never exceeded 30 mA h g–1. The rate capability here reported for the carbon coated etched LiMnPO4 nanocrystals represents an important result, taking into account that in the electrode formulation 80% wt is made of the active material and the adopted charge protocol is based on reasonable fast charge times.

show abstract

Section: Introductionmentioning

confidence: 99%

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Chen¹,

Dilena²,

Paolella

et al. 2016

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…[5][6][7] At present, among the commercial batteries, lithium-ion batteries are dominant due to their high energy density. 8,9 However, the high price and high-risk factor of lithium metal limit its development. [10][11][12][13] Compared with other metals, zinc stands out for its large environmental reserves, environmental friendliness, and high theoretical capacity (820 mAh•g −1 ).…”

mentioning

confidence: 99%

Synthesis and Optimization of ZnMn₂O₄ Cathode Material for Zinc-Ion Battery by Citric Acid Sol-Gel Method

Cai

Luo

Cong

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

Zinc manganese spinel composite oxide ZnMn2O4 is an important inorganic material, which is rich in natural resources and environment-friendly. Herein, pure phase ZnMn2O4 was prepared by a simple sol-gel process as cathode material for zinc ion batteries. In order to improve the cycle performance of the material while maintaining the capacity, acetonitrile/aqueous co-solvent electrolyte (0.5M Zn(CF3SO3)2/AN-H2O) was used as the electrolyte of the zinc ion battery. The influence of different experimental conditions on the electrochemical properties of ZnMn2O4 was studied by orthogonal experiment. In order to improve its electrochemical performance and cycling ability, the non-equivalent substitution of pure ZnMn2O4 was performed by adding Al3+. The non-equivalent substitution of Al3+ reduced the cell volume of ZnMn2O4 and the mixed manganese valence appeared. The specific capacity of initial discharge increases from 52.9 mAh·g-1 to 109.4 mAh·g-1 at 0.05C, and the cycle stability is also greatly improved. After 100 cycles, the capacity retention rate was 82.3%. This work shows that ZnMn2O4 is a promising cathode material for zinc ion batteries, which expands the application of spinel oxide in zinc ion batteries.

show abstract

“…37,38 Nevertheless, the construction of the hierarchical architecture reported, oen required complex process steps, not suitable for large-scale manufacture. 39,40 Based on this, it is expected that a Fe-substituted LiMnPO 4 /C material with a hierarchical structure can be constructed via a simple strategy, which will be benecial for engineering applications by preventing the annoying interfacial reactions of Mn ions with the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Simple synthesis of a hierarchical LiMn_0.8Fe_0.2PO₄/C cathode by investigation of iron sources for lithium-ion batteries

Xing

Zhang

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Enhanced electrochemical performance of LiMnPO 4 /C prepared by microwave-assisted solvothermal method

Cited by 17 publications

References 44 publications

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Synthesis and Optimization of ZnMn₂O₄ Cathode Material for Zinc-Ion Battery by Citric Acid Sol-Gel Method

Simple synthesis of a hierarchical LiMn_0.8Fe_0.2PO₄/C cathode by investigation of iron sources for lithium-ion batteries

Contact Info

Product

Resources

About

Enhanced electrochemical performance of LiMnPO 4 /C prepared by microwave-assisted solvothermal method

Cited by 17 publications

References 44 publications

Relevance of LiPF6 as Etching Agent of LiMnPO4 Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Relevance of LiPF6 as Etching Agent of LiMnPO4 Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Synthesis and Optimization of ZnMn2O4 Cathode Material for Zinc-Ion Battery by Citric Acid Sol-Gel Method

Simple synthesis of a hierarchical LiMn0.8Fe0.2PO4/C cathode by investigation of iron sources for lithium-ion batteries

Contact Info

Product

Resources

About

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Relevance of LiPF₆ as Etching Agent of LiMnPO₄ Colloidal Nanocrystals for High Rate Performing Li-ion Battery Cathodes

Synthesis and Optimization of ZnMn₂O₄ Cathode Material for Zinc-Ion Battery by Citric Acid Sol-Gel Method

Simple synthesis of a hierarchical LiMn_0.8Fe_0.2PO₄/C cathode by investigation of iron sources for lithium-ion batteries