文献类型：期刊文献

英文题名：Bimetal-organic framework-templated Zn-Fe-based transition metal oxide composites through heterostructure optimization to boost lithium storage

作者：Fu, Yuanxiang Qiu, Wei Huang, Hongsheng Huang, Qianhong Guo, Yun Mai, Wanxin Luo, Yuhong Xu, Zhiguang Wu, Yongbo Lin, Xiaoming

第一作者：符远翔

通信作者：Luo, YH[1];Xu, ZG[1];Lin, XM[1]

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[2]Guizhou Inst Technol, Key Lab Energy Chem Guizhou Univ, Guiyang 550003, Peoples R China;[3]South China Normal Univ, Sch Chem, Guangzhou 510006, Peoples R China;[4]South China Normal Univ, Guangdong Basic Res Ctr Excellence Struct & Fundam, Sch Phys, Key Lab Atom & Subatom Struct & Quantum Control,Mi, Guangzhou 510006, Peoples R China;[5]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), South China Normal Univ, Sch Chem, Guangzhou 510006, Peoples R China.

年份：2025

卷号：683

起止页码：507-520

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20245317616473);Scopus(收录号：2-s2.0-85213266820);WOS:【SCI-EXPANDED(收录号:WOS:001413352900001)】；

基金：The authors gratefully acknowledge financial support for this research by Guizhou Provincial Science and Technology Projects (Grant No. QiankeheJiChu ZK [2022] yiban 171) and key laboratory of energy chemistry in Guizhou universities (Qian Jiao Ji [2022] 035) , Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation, China ("Climbing Program" Special Funds, pdjh2024a109) and the Scientific Research Innovation Project of Graduate School of South China Normal University, China (2024KYLX077) . Furthermore, the authors would like to thank the Shiyanjia lab (https:// www.shiyanjia.com ) for the XPS test.

语种：英文

外文关键词：Transition metal oxides; Lithium-ion batteries; Metal-organic frameworks; Synergistic effect

摘要：Transition metal oxides (TMOs), especially zinc- and iron-based materials, are known to be one of the most innovative anode materials based on their high theoretical capacity, low price and abundant natural reserves. However, the application of these materials is limited by poor electronic conductivity, slow ion mobility and large structural transformations during charging/discharging processes. To overcome these drawbacks, sacrificial template technology has been proposed as a promising strategy to optimize the electrochemical performance and structure stability of TMOs, showing its potential especially in the storage design of lithium-ion batteries (LIBs). In this paper, we successfully synthesized a series of ZnFe2O4/Fe2O3 compounds (named as ZFFO) with Zn/Fe-MOFs (metal-organic frameworks) as sacrificial templates, and then obtained single-component ZnFe2O4 contrast samples (named as ZFO) by etching ZFFO with NaOH. Density Functional Theory (DFT) calculations display that the bi-component ZFFO materials formed by the introduction of Fe2O3 exhibit a lower Li+ migration energy barrier compared to the single-component ZFO materials, indicating better ion diffusion kinetics of ZFFO. The bi-components of ZnFe2O4 and Fe2O3 in ZFFO electrodes can exert a synergistic effect to achieve mutual constraints on volume expansion and alleviate volume strain during charging/discharging processes, thus improving structural stability and electrochemical performance. Besides, the ZnFe2O4/Fe2O3 constructed with 2methylimidazole as a ligand not only has the synergistic effect of bi-components, but also exhibits a uniformly distributed small-size particle morphology, so that the discharge capacity is 864.2 mAh g- 1 after 200 cycles at 0.1 A g- 1 when used as an anode for LIBs. This approach presents a feasible and efficient way to synthesize bicomponent transition metal oxides with improved practical applications for LIBs.