Effect of heat treatment on material characteristics and pseudo-capacitive properties of manganese oxide prepared by anodic deposition

Chang, Jeng‐Kuei; Chen, Yi Lun; Tsai, Wen Ta

doi:10.1016/j.jpowsour.2004.03.076

Cited by 143 publications

(87 citation statements)

References 22 publications

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“…Meanwhile, the specific capacitance values of NiMn 2 O 4 were higher than that of the single MnO 2 . It clearly showed that the intercalation of Ni into Mn-based oxides improved dramatically ionic diffusivity and electrochemical capacities [20,21] and possessed multiple value states resulting from efficient redox reaction.…”

Section: Electrochemical Testmentioning

confidence: 99%

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

Wang

et al. 2016

Ceramics International

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Section: Electrochemical Testmentioning

confidence: 99%

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

Wang

et al. 2016

Ceramics International

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“…In this paper, MnO 2 electrode materials were synthesized by electrodeposition method. However, the electrochemical stability of plain Mn dioxide was not quite satisfactory, specific capacitance decaying during charge-discharge cycling was observed previously [10,17,19] , and Chen revealed its effect on the gas lubricated bearing [20] . In order to further improve the pseudocapacitive performance of plain Mn oxide, the addition of other rare metal oxides has been attempted.…”

Section: Introductionmentioning

confidence: 86%

“…Recently, several researchers have begun to develop various effective processes for producing Mn oxide electrodes with pseudocapacitive properties. These methods include thermal decomposition [7] , coprecipitation [8] , sol-gel processes [9][10][11] , physical vapor deposition [12][13][14] and anodic deposition [15][16][17][18] . In this paper, MnO 2 electrode materials were synthesized by electrodeposition method.…”

Section: Introductionmentioning

confidence: 99%

Influence of La-dopant on the material characteristics and supercapacitive performance of MnO2 electrodes

Shao

Zhao

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Manganese dioxide was synthesized by electrodeposition method with Mn (CH 3 COO) 2 ·4H 2 O as a raw material. La(NO 3 ) 3 ·6H 2 O was doped in electroyte during the preparing process to improve the performance of MnO 2 electrodes. The micrographs, crystal structure and element content of electrodes were analyzed by SEM, XRD and atomic absorption spectroscopy, respectively. It is found that the La content ratio in the dioxide can be easily controlled by adjusting the composition of the plating solution. Appropriate amount of doped La can increase the surface area of Mn/La materials, resulting in the supercapacitive behavior enhancement. Electrochemical tests show that the specific capacitance is significantely increased from 198.72 F·g -1 to 276.60 F·g -1 by La-doping.

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“…Manganese oxide prepared by anodic deposition and annealed at or above 500°C has been found to form crystalline, decrease the Mn-OH (hydroxide) as well as the H-O-H (water), and increase the Mn-O-Mn (oxide oxygen) compared with below 500°C-annealed and as-deposited [33]. The electrochemical activity of MnNi 0.25 O x decreases at high annealing temperature because of separation of the active material into crystalline phases by diffusion and then its mass specific capacitance decreases [34].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of manganese oxide electrodes by radio frequency sputtering for electrochemical capacitors

Lin

Lee

2009

J Appl Electrochem

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Manganese oxide thin films were sputtered on graphite foils by radio frequency (RF) sputtering. At the 1,000th cycle of potential cycling, maximum mass specific capacitance of 341 F g -1 was obtained in 0.5 M LiCl and with optimum sputtering conditions (5 sccm of oxygen, 20 mTorr, and 70 W) as well as annealing temperature (150°C). These show its high electrochemical stability and good mass specific capacitance at a higher sweep rate of 100 mV s -1 . In addition, the higher the volume flow rates of oxygen, the larger the amount of trivalent manganese oxide and the higher the surface roughness, the higher the mass specific capacitance at lower volume flow rates of oxygen, but the amounts of trivalent manganese oxide were almost the same and the mass specific capacitance decreased due to decreasing surface roughness at higher volume flow rates of oxygen. Furthermore, the geometric specific capacitance increases with increasing sputtering pressure and power.

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Effect of heat treatment on material characteristics and pseudo-capacitive properties of manganese oxide prepared by anodic deposition

Cited by 143 publications

References 22 publications

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

Influence of La-dopant on the material characteristics and supercapacitive performance of MnO2 electrodes

Fabrication of manganese oxide electrodes by radio frequency sputtering for electrochemical capacitors

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