兰州大学机构库 >物理科学与技术学院
NiCo2O4-Based Nanosheets with Uniform 4 nm Mesopores for Excellent Zn-Air Battery Performance
Yin, Jie1; Jin, Jing1; Liu, Hongbo2; Huang, Bolong3; Lu, Min1; Li, Jianyi1; Liu, Hanwen1; Zhang, Hong4; Peng, Yong4; Xi, PX(席聘贤)1; Yan, Chun-Hua1,5
2020-08-26
Source PublicationADVANCED MATERIALS
ISSN0935-9648
Volume32Issue:39
AbstractHerein, a strategy is reported for the fabrication of NiCo2O4-based mesoporous nanosheets (PNSs) with tunable cobalt valence states and oxygen vacancies. The optimized NiCo(2.148)O(4)PNSs with an average Co valence state of 2.3 and uniform 4 nm nanopores present excellent catalytic performance with an ultralow overpotential of 190 mV at a current density of 10 mA cm(-2)and long-term stability (700 h) for the oxygen evolution reaction (OER) in alkaline media. Furthermore, Zn-air batteries built using the NiCo(2.148)O(4)PNSs present a high power and energy density of 83 mW cm(-2)and 910 Wh kg(-1), respectively. Moreover, a portable battery box with NiCo(2.148)O(4)PNSs as the air cathode presents long-term stability for 120 h under low temperatures in the range of 0 to -35 degrees C. Density functional theory calculations reveal that the prominent electron exchange and transfer activity of the electrocatalyst is attributed to the surface lower-coordinated Co-sites in the porous region presenting a merging 3d-e(g)-t(2g)band, which overlaps with the Fermi level of the Zn-air battery system. This favors the adsorption of the *OH, and stabilized *O radicals are reached, toward competitively lower overpotential, demonstrating a generalized key for optimally boosting overall OER performance.
Keywordmesoporous nanosheets oxygen evolution reaction oxygen vacancies valence electron regulation Zn-air batteries
DOI10.1002/adma.202001651
Indexed BySCIE ; EI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[21931001][21922105][51771085][51801088] ; Fundamental Research Funds for the Central Universities[lzujbky-2018-it40][lzujbky-2017-it42] ; Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province[2019ZX-04] ; 111 Project[B20027] ; NSFC[21771156] ; Early Career Scheme (ECS) fund from the Research Grant Council (RGC) in Hong Kong[PolyU 253026/16P] ; Postdoctoral Innovative Talent Support Program[BX20200157]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000562460900001
PublisherWILEY-V C H VERLAG GMBH
EI Accession Number20203509106529
EI KeywordsZinc air batteries
EI Classification Number761 Nanotechnology ; 803 Chemical Agents and Basic Industrial Chemicals ; 922.1 Probability Theory ; 933 Solid State Physics
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/440480
Collection物理科学与技术学院
化学化工学院
Corresponding AuthorHuang, Bolong; Xi, Pinxian
Affiliation1.Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China
2.Southwest Petr Univ, Petr Engn Sch, Chengdu 610000, Peoples R China
3.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hung Hum, Hong Kong, Peoples R China
4.Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China
5.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat,PKU, Beijing 100871, Peoples R China
First Author AffilicationCollege of Chemistry and Chemical Engineering
Corresponding Author AffilicationCollege of Chemistry and Chemical Engineering
Recommended Citation
GB/T 7714
Yin, Jie,Jin, Jing,Liu, Hongbo,et al. NiCo2O4-Based Nanosheets with Uniform 4 nm Mesopores for Excellent Zn-Air Battery Performance[J]. ADVANCED MATERIALS,2020,32(39).
APA Yin, Jie.,Jin, Jing.,Liu, Hongbo.,Huang, Bolong.,Lu, Min.,...&Yan, Chun-Hua.(2020).NiCo2O4-Based Nanosheets with Uniform 4 nm Mesopores for Excellent Zn-Air Battery Performance.ADVANCED MATERIALS,32(39).
MLA Yin, Jie,et al."NiCo2O4-Based Nanosheets with Uniform 4 nm Mesopores for Excellent Zn-Air Battery Performance".ADVANCED MATERIALS 32.39(2020).
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