Urea-Assisted Nickel-Manganese Phosphate Composite Microarchitectures with Ultralong Lifecycle for Flexible Asymmetric Solid-State Supercapacitors: A Binder-Free Approach
DC Field | Value | Language |
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dc.contributor.author | Chun, Seung-Hyun | - |
dc.contributor.author | Katkar, Pranav K. | - |
dc.contributor.author | Patil, Supriya A. | - |
dc.contributor.author | Jeon, Jae Ho | - |
dc.contributor.author | Na, Hong Ryeol | - |
dc.contributor.author | Padalkar, Navnath S. | - |
dc.contributor.author | Jerng, Sahng-Kyoon | - |
dc.contributor.author | Lee, Sunghun | - |
dc.date.accessioned | 2023-07-11T06:40:36Z | - |
dc.date.available | 2023-07-11T06:40:36Z | - |
dc.date.created | 2023-07-11 | - |
dc.date.issued | 2022-11-03 | - |
dc.identifier.issn | 0887-0624 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88421 | - |
dc.description.abstract | The limited energy density and cyclability of supercapacitors are major roadblocks to their development as energy storage devices. To address these issues, a binder-free nickel-manganese (Ni-Mn) phosphate composite (NMP series) microarchitecture has been synthesized by the hydrothermal method on a nickel foam (NF) substrate using various urea dosages. Due to the influence of urea, microrod-/microplate-like morphologies of NMP series thin films evolved to micropetals. This study demonstrates a synergy between Ni and Mn metal ions and also the influence of different urea contents on the physicochemical properties of mesoporous NMP series thin films. Notably, the NMP-4 microarchitecture has a large surface area (7.5 m2 g-1), which provides more electroactive sites in electrochemical measurements. Accordingly, in the NMP series electrodes, the NMP-4 thin film demonstrated high electrochemical properties (the maximum specific capacity was found to be 901 C/g at a 5 mV/s scan rate) and retained 127% capacity over 6000 cycles, indicating good durability with a well-preserved microstructure throughout the cycling. Furthermore, a flexible asymmetric solid-state (FASS) supercapacitor was designed utilizing NMP-4 and reduced graphene oxide (rGO) as a cathode and an anode, respectively, in the poly(vinyl alcohol)-KOH (PVA-KOH) gel electrolyte with an extended operational voltage of +1.8 V. This FASS device provides a high specific capacity (192 C/g at 0.6 A/g current density), supreme energy density (48.2 Wh kg-1) at a power density of 575 W kg-1, and a desirable longevity of 108% over 5000 cycles. Moreover, the FASS device also demonstrated its practical applicability. The long-term stability suggests that the binder-free urea-assisted Ni-Mn phosphate composite is a good candidate for energy storage devices. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ENERGY & FUELS | - |
dc.title | Urea-Assisted Nickel-Manganese Phosphate Composite Microarchitectures with Ultralong Lifecycle for Flexible Asymmetric Solid-State Supercapacitors: A Binder-Free Approach | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000877341300001 | - |
dc.identifier.doi | 10.1021/acs.energyfuels.2c02875 | - |
dc.identifier.bibliographicCitation | ENERGY & FUELS, v.36, no.21, pp.13356 - 13369 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85140853169 | - |
dc.citation.endPage | 13369 | - |
dc.citation.startPage | 13356 | - |
dc.citation.title | ENERGY & FUELS | - |
dc.citation.volume | 36 | - |
dc.citation.number | 21 | - |
dc.contributor.affiliatedAuthor | Katkar, Pranav K. | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | COBALT PHOSPHATE | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | NANOCOMPOSITE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | HYDROXIDES | - |
dc.subject.keywordPlus | SUBSTRATE | - |
dc.subject.keywordPlus | ALKALINE | - |
dc.subject.keywordPlus | CATHODE | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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