CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Stabilization of layered manganese oxide by substitutional cation doping
Hu, ZM; Chen, M; Zhang, H; Huang, L; Liu, KS; Ling, YS; Zhou, H; Jiang, Z; Feng, G; Zhou, J
2019
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume7Issue:12Pages:7118—7127
Subtype期刊论文
AbstractManganese oxides (-MnO2) with a layered structure are considered as potential electrode materials due to the presence of an extra ion transport channel between interlayers. However, their dissolution and structure collapse during the electrochemical charge and discharge process usually lead to rapid capacity fading. In this study, we designed a metal-ion (Ba2+, Sn2+, Co3+ and Ni2+)-doped two dimensional (2D) -MnO2 to improve the stability of the layered structure. Both the experimental and the theoretical calculations indicated that Co3+ and Ni2+-doped 2D -MnO2 (2D Co-KMnO and Ni-KMnO, respectively), obtained via a substitutional doping route (by replacing the Mn atom), could efficiently stabilize the layered structure. Moreover, the 2D Co-KMnO electrode material exhibited a high specific capacitance (342.7 F g(-1)) and excellent cycling performance, with 95.3% capacitance retention after 20000 cycles at the current density of 5 A g(-1). This study revealed the mechanism of the effect of the doping behavior of metal ions on the crystal stability of metal oxides, possibly paving a new path for the rational design of other robust functional nanomaterials.
KeywordHIGH-PERFORMANCE MNO2 NANOSHEETS GRAPHENE/MNO2 NANOSTRUCTURES INTERCALATION ALPHA-MNO2 TRANSITION ELECTRODES DELTA-MNO2 LITHIUM
DOI10.1039/c8ta12515e
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31825
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;
2.Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Sch Energy & Power Engn, Wuhan 430074, Hubei, Peoples R China;
3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
Recommended Citation
GB/T 7714
Hu, ZM,Chen, M,Zhang, H,et al. Stabilization of layered manganese oxide by substitutional cation doping[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(12):7118—7127.
APA Hu, ZM.,Chen, M.,Zhang, H.,Huang, L.,Liu, KS.,...&Zhou, J.(2019).Stabilization of layered manganese oxide by substitutional cation doping.JOURNAL OF MATERIALS CHEMISTRY A,7(12),7118—7127.
MLA Hu, ZM,et al."Stabilization of layered manganese oxide by substitutional cation doping".JOURNAL OF MATERIALS CHEMISTRY A 7.12(2019):7118—7127.
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