钠离子电池材料

钠离子电池作为锂离子电池的补充技术,具有一定的应用前景。本课题组主要研究了层状氧化物正极、磷酸钒钠正极和钛酸钠负极材料等。层状氧化物正极材料容量高且合成过程简易,但其循环和空气稳定性较差;磷酸钒正极材料热稳定性好且可以实现长周期循环,但电子电导性差,比能量较低;钛酸钠负极环境友好且稳定性好,但首周库伦效率较低、自身导电性较差,倍率性能受限。针对以上问题,本课题组通过研究提供了一系列有效的改性策略,如:纳米化,离子掺杂,形貌调控,复合结构设计等,聚焦于开发极具商业化前景正负材料。代表作:

1Chunliu Xu; Junmei Zhao*; Enhui Wang; Xiaohong Liu;Xing Shen; Xiaohui Rong; Qiong Zheng; Guoxin Ren; Nian Zhang; Xiaosong Liu; Xiaodong Guo*; Chao Yang; Huizhou Liu; Benhe Zhong; and Yong-Sheng Hu*, A Novel NASICON-Typed Na4VMn0.5Fe0.5(PO4)3 Cathode for High-Performance Na-Ion Batteries , Advanced Energy Materials, 2021, 2100729

2Yumei Liu; Zhenguo Wu; Sylvio Indris; Weibo Hua; Nicola P.M. Casati; Akhil Tayal; Mariyam Susana Dewi Darma; Gongke Wang; Yuxia Liu; Chunjin Wu; Yao Xiao; Benhe Zhong; Xiao-dong Guo*; The structural origin of enhanced stability of Na3.32Fe2.11Ca0.23(P2O7)2 cathode for Na-ion batteries, Nano Energy, 2020, 79: 105417

3De-quan Chen; Wen Zhang; Kang-ying Luo; Yang Song; Yan-jun Zhong; Yu-xia Liu; Gong-ke Wang; Ben-he Zhong; Zhen-guo Wu*; Xiao-dong Guo*; Hard carbon for sodium storage: mechanism and optimization strategies toward commercialization, Energy & Environmental Science, 2021, https://doi.org/10.1039/d0ee03916k

4Yao Xiao; Yan-fang Zhu; Wei Xiang; Zhen-guo Wu; Yong-chun Li; Jing Lai; Shi Li; En-hui Wang; Zu-guang Yang; Chun-liu Xu; Ben-He Zhong; Xiao-dong Guo*; Decipheringan Abnormal Layered-Tunnel Hetero-structure Induced by Chemical Substitution for the Sodium Oxide Cathode, Angew. Chem. Int. Ed., 2019, 59: 1491-1495

5Chun-jin Wu; Wei-bo Hua; Zheng Zhang; Ben-he Zhong; Zu-guang Yang; Gui-lin Feng; Wei Xiang; Zhen-guo Wu*; Xiao-dong Guo*; Design and synthesis of layered Na2Ti3O7 and tunnel Na2Ti6O13 hybrid structures with enhanced electrochemical behavior for sodium-ion batteries, Advanced Science, 2018, 5(9): 1800519

6Yao Xiao; Peng-fei Wang; Ya-xia Yin; Yan-fang Zhu; Yu-bin Niu; Xu-dong Zhang; Jie-nan Zhang; Xi-qian Yu; Xiao-dong Guo*; Ben-he Zhong; Yu-guo Guo*; Exposing {010} Active Facets by Multiple‐Layer Oriented Stacking Nanosheets for High-Performance Capacitive Sodium-Ion Oxide Cathode, Advanced Materials, 2018, 30(40): 1803765