张亮教授及其合作者在Nat. Energy 上发表论文

作者：

Shiyong Chu^1,2#, Liguang Wang^3#, Jingjing Bian^1,2#, Chen Cheng⁴, Jiaming Tian^1,2, Chuanchao Sheng¹, Zengqing Zhuo⁵, Tianze Shi^1,6, Jinghua Guo⁵, Liang Zhang⁴*, Jun Lu³*, Haoshen Zhou¹*, Shaohua Guo^1,2,6*

单位：

¹National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Jiangsu Key Laboratory of Artificial Functional Materials, Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People’s Republic of China.

²Power and Energy Storage Battery Lab, Shenzhen Research Institute of Nanjing University, Shenzhen, People’s Republic of China.

³College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, People’s Republic of China.

⁴Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, People’s Republic of China.

⁵Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

⁶HoNa New Energy Technology Co., Ltd, Yancheng, People’s Republic of China.

摘要：

Lattice-oxygen redox in layered oxides can enhance energy density, but its limited reversibility causes structural instability during deep cycling. Here we develop an iron-mediated strategy to regulate lattice-oxygen redox in layered oxide cathodes. In the Na_2/3Mn_7/12Mg_1/4Fe_1/6O₂ cathode, Fe ions act as redox mediators, with Fe⁴⁺ capturing electrons from lattice oxygen during charging and Fe²⁺ donating electrons back to oxidized oxygen during discharging through chemical pathways. With the assistance of iron mediation, the reversibility of lattice-oxygen redox is dramatically improved from 75% to 99%. As a result, the lattice-oxygen-activated cathode enables a sodium-ion pouch cell to achieve an energy density of 206Whkg⁻¹ and operate stably for 100 cycles at 50mAg⁻¹, with a capacity retention of 87.8%

影响因子：

70.1

分区情况：

一区

链接：

https://www.nature.com/articles/s41560-026-02112-8