Zhou Meng, Zhou Xunzhu, Li Lin, Chen Xiang, Qiao Zhenan, Chou Shulei
College of Chemical Engineering and Technology, Yantai Nanshan University Yantai Shandong 265713 China.
Institute for Carbon Neutralization Technology, College of Chemistry and Materials Engineering, Wenzhou University Wenzhou Zhejiang 325035 China
Chem Sci. 2024 May 1;15(23):8651-8663. doi: 10.1039/d4sc01226g. eCollection 2024 Jun 12.
NaV(PO) (NVP) cathode materials with the advantages of long cycle life and superior thermal stability have been considered promising cathode candidates for SIBs. However, the unsatisfactory energy density derived from low theoretical capacity and operating voltage (3.35 V Na/Na, based on the V/V redox couple) inevitably limits their practical application. Therefore, the activation of the V/V redox couple (∼4.0 V Na/Na) in NVP-based cathode materials to boost the energy density of SIBs has attracted extensive attention. Herein, we first analyze the challenges of activation of the V/V redox couple in NVP-based cathode materials. Subsequently, the recent achievement of NVP-based cathode materials with activated V/V redox reactions for SIBs is overviewed. Finally, further research directions of high voltage V/V redox reactions in NVP-based cathodes are proposed. This review provides valuable guidance for developing high energy density NVP-based cathode materials for SIBs.
具有长循环寿命和优异热稳定性等优点的NaV(PO)（NVP）正极材料，被认为是钠离子电池（SIBs）很有前景的正极候选材料。然而，由于理论容量低和工作电压（基于V/V氧化还原对，Na/Na为3.35 V）导致的能量密度不理想，不可避免地限制了它们的实际应用。因此，在基于NVP的正极材料中激活V/V氧化还原对（Na/Na约为4.0 V）以提高钠离子电池的能量密度，已引起广泛关注。在此，我们首先分析在基于NVP的正极材料中激活V/V氧化还原对所面临的挑战。随后，概述了基于NVP的正极材料在钠离子电池中实现V/V氧化还原反应激活的近期研究成果。最后，提出了基于NVP的正极中高压V/V氧化还原反应的进一步研究方向。本综述为开发用于钠离子电池的高能量密度基于NVP的正极材料提供了有价值的指导。
