Stable cycling of LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2)/lithium metal batteries enabled by synergistic tuning the surface stability of cathode/anode

作     者：Chunli Li Xinyu Zhang Zhuolin Yang Haijian Lv Tinglu Song Shijie Lu Yuxiang Zhang Tianwen Yang Fan Xu Feng Wu Daobin Mu Chunli Li;Xinyu Zhang;Zhuolin Yang;Haijian Lv;Tinglu Song;Shijie Lu;Yuxiang Zhang;Tianwen Yang;Fan Xu;Feng Wu;Daobin Mu

作者机构：School of Materials Science&EngineeringBeijing Key Laboratory of Environmental Science and EngineeringBeijing Institute of TechnologyBeijing 100081China College of ChemistryBeijing University of Chemical TechnologyBeijing 100029China Shenzhen BTR New Energy Technology Institute Co.LtdShenzhen 518118GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2023年第87卷第12期

页      面：342-350,I0009页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(22209012,52072036) the fellowship of China Postdoctoral Science Foundation(2020M680374) 

主　　题：Ni-rich layered oxides Surface fluorinated reconstruction Interfacial stability TOF-SIMS Cross-talk effect 

摘      要：Ni-rich layered oxides(LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2))show great potential in long-range and low-cost lithiumion ***,due to the high surface sensitivity,their practical application is hindered by interfacial instability with electrolytes under high voltage for long cyclic ***,by combining both firstprinciple calculations and time-of-flight secondary ion mass spectrometry(TOF-SIMS),a novel surface fluorinated reconstruction(SFR)mechanism is proposed to improve the interfacial stability under high voltage,which could effectively regulate the surface fluoride species to desensitize the LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2)*** demonstrate here that by tuning the ratio of fluoride species,the LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2)/Li battery could achieve excellent long-term and high voltage performance(163.5 mA h g^(-1)at 0.5 C for 300 cycles under 4.4 V),while the controlled sample decayed to 125.4 mA h g^(-1)after 300 ***,the favorable cross-talk effect induced by SFR further facilitates the incorporation of suitable amounts of Ni ions into the construction of stable solid electrolyte interface(SEI)layer for anode ***,the ultra-long cycling stability under high voltage can be achieved by the robust cathode/electrolyte and Li/electrolyte interfaces,which results in excellent interfacial stability after long *** work provides new insights into the surface design of cathode materials and improves the stability of the electrode-electrode interface under high voltage.