Porous hexagonal Mn_(5)O_(8)nanosheets as fast-charging anode materials for lithium-ion batteries

作     者：Xinchi Zhou Zhen Zhang Xinyu Jiang Suchong Tan Zhengdao Pan Xingyou Rao Yutong Wu Zhoulu Wang Xiang Liu Jian Gu Yi Zhang Shan Jiang 

作者机构：School of Energy Sciences and EngineeringNanjing Tech UniversityNanjing 211816China College of Materials Science and EngineeringNanjing Tech UniversityNanjing 211816China Hangzhou Institute of TechnologyXidian UniversityHangzhou 311200China Jianghuai Advance Technology CenterHefei 230000China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2024年第13卷第10期

页      面：1635-1642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(No.52105575) the Fundamental Research Funds for the Central Universities(No.QTZX23063) the Key Research and Development Projects of Anhui Province(No.202304a05020031) the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.SJCX24_0544) the Dreams Foundation of Jianghuai Advance Technology Center(No.2023-ZM01X017) the Aeronautical Science Foundation of China(No.2022Z073081001) 

主　　题：Mn_(5)O_(8) lithium-ion batteries(LIBs) anode fast-charging 

摘      要：Among various metal oxide nanomaterials,manganese oxides,which can exist in different structures and valence states,are considered highly promising anode materials for lithium-ion batteries(LIBs).However,conventional manganese oxides,such as MnO and MnO2,face significant challenges during cycling ***,poor electronic conductivity and large volume changes result in low specific capacity during high current charging and discharging,as well as poor fast-charging *** work presents an approach to synthesizing porous hexagonal Mn_(5)O_(8)nanosheets via hydrothermal and annealing methods and applies them as anode materials for *** Mn_(5)O_(8)nanomaterials exhibit a thin plate morphology,which effectively reduces the distance for ion/electron transmission and mitigates the phenomenon of volume ***,the large pore size of Mn_(5)O_(8)results in abundant interlayer and intralayer defects,which further increase the rate of ion *** unique characteristics enable Mn_(5)O_(8)to demonstrate excellent electrochemical performance(938.7 mAh·g^(-1)after 100 cycles at 100 mA·g^(-1))and fast charging performance(675.7 mAh·g^(-1)after 1000 cycles at 3000 mA·g^(-1)),suggesting that Mn_(5)O_(8)nanosheets have the potential to be an ideal fast-charging anode material for LIBs.