Structural and electrochemical characterization of vanadium-excess Li3V2(PO4)3-LiVOPO4/C composite cathode material synthesized by sol–gel method

Ahsan, Zishan; Cai, Zhengyu; Wang, Shuai; Ma, Yangmin; Song, Guowen; Yu, Mo; Zhang, Shihong; Yang, Weidong; Chen, Wen; Feng, Xiaohua

doi:10.1007/s10008-021-04986-y

Cited by 3 publications

(1 citation statement)

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“…[7,16,17] The inferior electronic conductivity for phosphate based polyanion type cathode material leads to poor electrochemical kinetics causing large overpotential. [7,18,19] Meanwhile, the inactive polyanions account for large molecular mass resulting in relatively low tap density (compared to layered oxides) and hence, smaller specific capacity and poor rate performance coupled with low conductivity. [20][21][22][23][24][25][26][27][28] Therefore, the bottleneck constraints of poor electronic conductivity and limited energy density of phosphate based polyanions hinder the large-scale applications and need to be addressed urgently.…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Phosphate Based Polyanion Cathode Materials for Sodium‐Ion Batteries

Ahsan,

Cai,

Wang

et al. 2024

Advanced Energy Materials

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Sodium‐ion batteries (SIBs) are regarded as next‐generation secondary batteries and complement to lithium‐ion batteries (LIBs) for large‐scale electrochemical energy storage applications due to the abundant availability, even distribution, and cost‐effectiveness of raw sodium resources. The phosphate‐based polyanions stand out of various cathode material owing to their high operation voltage, stable structure, superior safety, and excellent sodium‐storage properties. The undesirable electric conductivities and specific capacities limit their large‐scale industrialization. Herein, a recent research development of phosphate‐based polyanion cathodes including orthophosphate, oxyphosphate, pyrophosphate, and mixed phosphates is thoroughly reviewed. Subsequently, the effect of modification strategies including element doping, surface coating, morphology control, and electrode design toward high‐performance cathode materials for SIBs are systematically explored. Finally, the future research directions of phosphate‐based polyanion cathodes based on electrochemical performance including reversible capacity, voltage, energy density, rate capacity, cycling stability, and commercial applications are comprehensively concluded. It is believed that current review will present instructive perspectives into developing practicable phosphate‐based polyanion cathode materials for SIBs.

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