Mengting Liu, Zhiwei Cheng, Xu Zhu, Haojie Dong, Tianran Yan, Liang Zhang, Lu Zheng, Hu-Rong Yao, Xian-Zuo Wang, Lianzheng Yu, Bing Xiao, Yao Xiao, Peng-Fei Wang
{"title":"Biphase-to-monophase structure evolution of Na0.766+xLixNi0.33−xMn0.5Fe0.1Ti0.07O2 toward ultradurable Na-ion batteries","authors":"Mengting Liu, Zhiwei Cheng, Xu Zhu, Haojie Dong, Tianran Yan, Liang Zhang, Lu Zheng, Hu-Rong Yao, Xian-Zuo Wang, Lianzheng Yu, Bing Xiao, Yao Xiao, Peng-Fei Wang","doi":"10.1002/cey2.565","DOIUrl":null,"url":null,"abstract":"<p>Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 phase. However, their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation, complicated electrochemical phase transition, and unsatisfactory cycling life. Herein, we propose an efficient structural evolution strategy from biphase to monophase of Na<sub>0.766+<i>x</i></sub>Li<sub><i>x</i></sub>Ni<sub>0.33−<i>x</i></sub>Mn<sub>0.5</sub>Fe<sub>0.1</sub>Ti<sub>0.07</sub>O<sub>2</sub> through Li<sup>+</sup> substitution. The role of Li<sup>+ </sup>substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal (TM) cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery cycling. As a result, the thermodynamically robust O3-Na<sub>0.826</sub>Li<sub>0.06</sub>Ni<sub>0.27</sub>Mn<sub>0.5</sub>Fe<sub>0.1</sub>Ti<sub>0.07</sub>O<sub>2</sub> cathode delivers a high capacity of 139.4 mAh g<sup>−1</sup> at 0.1 C and shows prolonged cycling life at high rates, with capacity retention of 81.6% at 5 C over 500 cycles. This work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials, contributing to the development of long-life sodium-ion batteries.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 9","pages":""},"PeriodicalIF":19.5000,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.565","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Energy","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cey2.565","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 phase. However, their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation, complicated electrochemical phase transition, and unsatisfactory cycling life. Herein, we propose an efficient structural evolution strategy from biphase to monophase of Na0.766+xLixNi0.33−xMn0.5Fe0.1Ti0.07O2 through Li+ substitution. The role of Li+ substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal (TM) cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery cycling. As a result, the thermodynamically robust O3-Na0.826Li0.06Ni0.27Mn0.5Fe0.1Ti0.07O2 cathode delivers a high capacity of 139.4 mAh g−1 at 0.1 C and shows prolonged cycling life at high rates, with capacity retention of 81.6% at 5 C over 500 cycles. This work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials, contributing to the development of long-life sodium-ion batteries.
期刊介绍:
Carbon Energy is an international journal that focuses on cutting-edge energy technology involving carbon utilization and carbon emission control. It provides a platform for researchers to communicate their findings and critical opinions and aims to bring together the communities of advanced material and energy. The journal covers a broad range of energy technologies, including energy storage, photocatalysis, electrocatalysis, photoelectrocatalysis, and thermocatalysis. It covers all forms of energy, from conventional electric and thermal energy to those that catalyze chemical and biological transformations. Additionally, Carbon Energy promotes new technologies for controlling carbon emissions and the green production of carbon materials. The journal welcomes innovative interdisciplinary research with wide impact. It is indexed in various databases, including Advanced Technologies & Aerospace Collection/Database, Biological Science Collection/Database, CAS, DOAJ, Environmental Science Collection/Database, Web of Science and Technology Collection.