Na4Fe3(PO4)2(P2O7) cathode for sodium-ion batteries: from crystal structure to high-energy-density design and solid-state battery application prospects

Wenbin Fei, Yian Wang, Yulei Sui and Ling Wu

Mater. Horiz., 2026, 13, 2734
DOI: 10.1039/D5MH02190A

Iron-based polyanionic cathodes for sustainable sodium-ion batteries

Long Li, Jiaqi Meng, Xiangpeng Kong, Peiling Lin, Qiang Rong, Xingxing Jiao, Zhongxiao Song, Yangyang Liu and Shujiang Ding

J. Mater. Chem. A, 2025, 13, 16274
DOI: 10.1039/D5TA01112D

Creating multi-electron reactions in a NASICON-type Na7V4(P2O7)4(PO4) cathode for sodium-ion batteries by activating reversible V4+/V5+ redox reactions

Haohang Fan, Hualing Tian, Yanjun Cai, Yanhui Zhang, Qingrong Kong, Yuanyuan Che, Jiayao Zhu, Yang Zhang, Yingbo Wang, Xiang Yao and Zhi Su

J. Mater. Chem. A, 2026, 14, 9258
DOI: 10.1039/D5TA10137A

Preparation and application of the high-performance sodium-ion battery cathode material Na3.6Fe2.6(PO4)1.6P2O7@CNT with dual-carbon coating

Binghan Dai, Tianming Lu, Jinhan Teng, Junjie Huang, Enmin Li, Kaibo Zhang, Qiang Wang, Dongdong Yin, Sicheng Liu, Luyu Lei, Xin Tang and Jing Li

J. Mater. Chem. A, 2025, 13, 7413
DOI: 10.1039/D4TA08638D

Enhancing the rate capability of Na4Fe3(PO4)2(P2O7) by partial co-substitution of V3+ and Al3+ for Fe2+

Shu Zhao, Hao Li, Shuo Shi, Chao Wang and Xiu Song Zhao

J. Mater. Chem. A, 2026, 14, 13677
DOI: 10.1039/D5TA09389A

Phase composition optimization and performance improvement of Na4Fe3(PO4)2P2O7 for high rate capability sodium-ion batteries

Wenhao Song, Ming Lei, Jiao Peng, Hao Ding, Yixu Zhang, Li He, Juan Yang, Ruijuan Wang, Hong Liu and Xianyou Wang

Journal of Energy Storage, 2025, 136, 118507
DOI: 10.1016/j.est.2025.118507

Phase regulation of Na4Fe3(PO4)2P2O7 for advanced sodium-ion batteries

Jinqiang Gao, Junpu Zhang, Jingyao Zeng, Yi He, Weishun Jian, Kai Wang, Wenyuan Li, Biao Zhong, Hongshuai Hou, Wentao Deng, Guoqiang Zou, Libao Chen and Xiaobo Ji

Nano Energy, 2026, 152, 111918
DOI: 10.1016/j.nanoen.2026.111918

Synergistical Engineering of Vacancy and Doping Enables High‐Rate and Ultrastable Na4Fe2Mn(PO4)2P2O7 Cathode for Sodium Ion Batteries

Chenxi Jiang, Qinqin Yu, Chunyang Wu, Bowen Huang, Xinlai Wei and Yuan‐Li Ding

Small Methods, 2025, 9
DOI: 10.1002/smtd.202500393

Effect of K+-doping on oxygen vacancies reduction, kinetics and cycling stability of Na4Fe3(PO4)2(P2O7)/C cathodes for sodium-ion batteries

Xinli Wu, Yu Cui, Yamei Yao, Yali Gao, Chunli Guo, Weike Zhang, Meiqing Guo, Zonglin Yi, Xingqiang Shi and Han Chen

Journal of Energy Storage, 2025, 132, 117661
DOI: 10.1016/j.est.2025.117661

Leidenfrost‐Assisted Synthesis of Indium‐Substituted Mixed Phosphate Cathodes with Superior Cycling Stability and Enhanced Sodium Storage Kinetics

Subhajit Singha, Yuvraj Soni, Sharad Dnyanu Pinjari, Tasdique Arman, Rui Tan, Raghavan Ranganathan, Ashok Kumar Nanjundan and Rohit Ranganathan Gaddam

Small, 2026, 22
DOI: 10.1002/smll.202511474

Advancements and challenges in modification strategies for Na4Fe3(PO4)2(P2O7) Cathode: toward high-performance sodium-ion batteries

Pengcheng Liu, Penghao Wang, Juan Wu, Dan Xue, Boyan Ji, Like Zhang, Ruizhi Zhang, Han Chen, Jing Li and Li Xiao

Ionics, 2026, 32, 3771
DOI: 10.1007/s11581-026-06978-2

Controllable Configuration of Constitutional Units in Vanadium/Iron‐Based Polyanionic Compounds for Sodium‐Ion Storage

Bochao Chen, Jiahao Wang, Zhiyuan Xu, Jie Miao, Yong Lu, Zhenhua Yan, Kai Zhang and Jun Chen

Advanced Materials, 2025, 37
DOI: 10.1002/adma.202509966

Current progress of Na4Fe3(PO4)2(P2O7): Key issues, modifications, and perspectives

Yang Wang, Fangxiong Deng, Shaowei Ouyang, Can Jiang and Huangxu Li

Journal of Energy Chemistry, 2025, 111, 914
DOI: 10.1016/j.jechem.2025.08.027

Enhanced cycling stability of F-doped Na4Fe3(PO4)2P2O7 cathode material for sodium-ion batteries

Yanyan Cao, Yongtao Ma, Zihao Yang, Xiangyang Xie, Wei Huang, Dongzhu Liu, Jiangtao Wang, Jian Qin, Ming Li, Jingjing Wang, Wenbin Li, Yaqiong Su and Xifei Li

Journal of Power Sources, 2025, 635, 236519
DOI: 10.1016/j.jpowsour.2025.236519

Fast-charging Na4Fe3(PO4)2P2O7 cathode for sodium-ion batteries

Yang Yang, Wensun Zhu, Shoumeng Yang, Congcong Liu, Yu Yao, Xianhong Rui and Yan Yu

Solid State Ionics, 2025, 429, 116963
DOI: 10.1016/j.ssi.2025.116963

Research progress on Na4Fe3(PO4)2P2O7: Synthesis methods, modification strategies, and future directions

Mengyang Zhou, Shaohua Luo, Kaizhi Luo, Shengxue Yan and Caiyi Deng

Journal of Energy Storage, 2025, 139, 118969
DOI: 10.1016/j.est.2025.118969

High‐Voltage Cathode Materials for Sodium‐Ion Batteries: Advances and Challenges

Congqi Ren, Yulian Dong and Yong Lei

Small, 2026, 22
DOI: 10.1002/smll.202501262

Accelerating Electrochemical Kinetics in Na4Fe3(PO4)2P2O7 Cathodes Through Oxygen Vacancy Modulation for Wide‐Temperature Ah‐Level Sodium‐Ion Batteries

Lei Ran, Bolei Shen, Liang Yue, Haiyan Hu, Yuhao Xiang, Zhenfeng Jiang, Zhaohui Li, Yuchen Duan, Yanan Zhao, Yong Zheng, Maowen Xu, Yao Xiao and Yubin Niu

Angew Chem Int Ed, 2026, 65
DOI: 10.1002/anie.202525531

Enabling durable sodium storage of Fe-based fluorophosphate cathode via anion substitution

Zheng Li, Zechen Li, Yanzhe Zhang, Xuanyi Yuan, Haibo Jin and Yongjie Zhao

Journal of Energy Chemistry, 2025, 109, 850
DOI: 10.1016/j.jechem.2025.06.044

Accelerating Electrochemical Kinetics in Na4Fe3(PO4)2P2O7 Cathodes Through Oxygen Vacancy Modulation for Wide‐Temperature Ah‐Level Sodium‐Ion Batteries

Lei Ran, Bolei Shen, Liang Yue, Haiyan Hu, Yuhao Xiang, Zhenfeng Jiang, Zhaohui Li, Yuchen Duan, Yanan Zhao, Yong Zheng, Maowen Xu, Yao Xiao and Yubin Niu

Angewandte Chemie, 2026, 138
DOI: 10.1002/ange.202525531

Promises and Challenges of Na4Fe3(PO4)2(P2O7) Cathode for Electric Vehicles and Energy Storage From an Industrial Perspective

Peining Zhu, Qinqin Yu, Chaoyang Peng, Bingcheng Li, Zuyong Wang, Xiangxiao Lei, Zhiwei Zhu, Xuliang Tan, Yu Zeng, Liang Han, Xiaojia Zhang, Juan Du, Yuehui Yin and Yuan‐Li Ding

Small, 2026, 22
DOI: 10.1002/smll.202514884

A Review of Revealing the Impact of Transition Metals in Polyanionic Cathode Material Na4M3(PO4)2P2O7: Kinetic, Mechanisms and Optimization Strategies

Yuanlin Yan, Wenxi Zhao, Jinqiao Hu, Hanlin Wang, Zhao Xing, Jiarun Geng, Shikang Jiang, Qinfen Gu, Hua‐Kun Liu, Shi‐Xue Dou, Junwu Zhu, Zhengwei Zhao, Pan Xiong, Limin Zhou and Mingzhe Chen

Advanced Energy Materials, 2026, 16
DOI: 10.1002/aenm.202505808

Pillar doping of Na4 site in Na4Fe3(PO4)2P2O7 alleviating structural evolution at high voltages for sodium storage

Dongzhu Liu, Zihao Yang, Yanyan Cao, Zhaowen Chen, Guangjin Wang, Jiangtao Wang, Xiangyang Xie, Yongtao Ma, Wei Huang, Yukun Xi, Ningjing Hou, Xiaoxue Wang, Zheng Wang, Jinze Zhang, Wenbin Li, Jingjing Wang and Xifei Li

Journal of Energy Chemistry, 2025, 109, 931
DOI: 10.1016/j.jechem.2025.06.010

Fluorine Defect Modulation in Na2FePO4F1–x as the Cathode Material for Sodium-Ion Batteries

Tingting Xie, Wenjing Yang, Huijuan Guo, Qun Yi, Qin Wang, Long Yan, Hongmei Dai, Zihan Wang, Fangxin Li, Changchun Ai and Yongping Xue

ACS Appl. Energy Mater., 2026, 9, 465
DOI: 10.1021/acsaem.5c03231

Anion‐Driven d–p Orbital Hybridization in Na3.12Fe2.44(P2O7)2 for High‐Performance Sodium‐Ion Batteries

Xiangyu Wang, Libin Zhang, Qianmeng Wang, Jiajun Li, Xin Wang, Lianghan He, Jinwen Xu, Kun Ding, Haimei Liu, Zi‐Feng Ma and Yonggang Wang

Adv Funct Materials, 2026, 36
DOI: 10.1002/adfm.202529331

Constructs high performance iron-based phosphate sodium-ion batteries via oxygen vacancies strategy

Xinyue Xu, Hao Zhang, Hui Yang, Tinghang Xu, Baofeng Wang, Junxi Zhang and Yongjie Cao

Chemical Engineering Journal, 2025, 520, 166248
DOI: 10.1016/j.cej.2025.166248

Spray-drying synthesized Na4Fe3(PO4)2P2O7/C fluorine-doped cathodes for high-performance sodium-ion batteries

Chengping Li, Jinyi Wang, Ailin Xu, Xiong Luo, Feng Li, Jie Zheng, Rui Bao, Jinsong Wang, Rundong Wan, Zhengfu Zhang, Chongjun Bao and Shaohua Ju

Electrochimica Acta, 2026, 545, 147588
DOI: 10.1016/j.electacta.2025.147588

Electronic and Ionic Coupled Engineering Strategy of Na4Fe3(PO4)2(P2O7) for High-Rate and Long-Cycling Sodium-Ion Batteries

Zhiyu Zhang, Nan Zhang, Han Zhang, Jiaxuan Liu, Huiming Shi, Dmitrii V. Anishchenko, Elena V. Alekseeva, Ruopeng Li, Peixia Yang, Oleg V. Levin, Dianlong Wang, Hua Kun Liu, Shi-xue Dou and Bo Wang

ACS Sustainable Chem. Eng., 2025, 13, 16958
DOI: 10.1021/acssuschemeng.5c06802

Na4Fe3(PO4)2P2O7 cathode for sodium-ion batteries: Critical technologies and progress from fundamental advances to industrialization challenges

Haijun Xia, Weichen Xu, Weigang Wang, Hao Wu, Yun Zhang, Wenlong Cai and Kaipeng Wu

Energy Storage Materials, 2026, 84, 104788
DOI: 10.1016/j.ensm.2025.104788