Selective deposition of metal oxide nanoflakes on graphene electrodes to obtain high-performance asymmetric micro-supercapacitors

Xia, ZhenyuanChalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, S-41258 Gothenburg, Sweden.;CNR, Ist Sintesi Organ & Fotoreattivita, Via Gobetti 101, I-40129 Bologna, Italy. (författare)

QC 20230907
To meet the charging market demands of portable microelectronics, there has been a growing interest in high performance and low-cost microscale energy storage devices with excellent flexibility and cycling durability. Herein, interdigitated all-solid-state flexible asymmetric micro-supercapacitors (A-MSCs) were fabricated by a facile pulse current deposition (PCD) approach. Mesoporous Fe2O3 and MnO2 nanoflakes were functionally coated by electrodeposition on inkjet-printed graphene patterns as negative and positive electrodes, respectively. Our PCD approach shows significantly improved adhesion of nanostructured metal oxide with crack-free and homogeneous features, as compared with other reported electrodeposition approaches. The as-fabricated Fe2O3/MnO2 A-MSCs deliver a high volumetric capacitance of 110.6 F cm(-3) at 5 mu A cm(-2) with a broad operation potential range of 1.6 V in neutral LiCl/PVA solid electrolyte. Furthermore, our A-MSC devices show a long cycle life with a high capacitance retention of 95.7% after 10 000 cycles at 100 mu A cm(-2). Considering its low cost and potential scalability to industrial levels, our PCD technique could be an efficient approach for the fabrication of high-performance MSC devices in the future.

Mishukova, ViktoriiaKTH,Elektronik och inbyggda system(Swepub:kth)u1hqndzq (författare)
Sollami Delekta, SzymonKTH,Elektronik och inbyggda system(Swepub:kth)u1qvds70 (författare)
Sun, JinhuaChalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, S-41258 Gothenburg, Sweden. (författare)
Sanchez, Jaime S.Chalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, S-41258 Gothenburg, Sweden. (författare)
Li, Jiantong,1980-KTH,Elektronik och inbyggda system(Swepub:kth)u1nlco2z (författare)
Palermo, VincenzoChalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, S-41258 Gothenburg, Sweden.;CNR, Ist Sintesi Organ & Fotoreattivita, Via Gobetti 101, I-40129 Bologna, Italy. (författare)
Chalmers Univ Technol, Dept Ind & Mat Sci, Horsalsvagen 7B, S-41258 Gothenburg, Sweden.;CNR, Ist Sintesi Organ & Fotoreattivita, Via Gobetti 101, I-40129 Bologna, Italy.Elektronik och inbyggda system (creator_code:org_t)

Ingår i:Nanoscale: Royal Society of Chemistry (RSC)13:5, s. 3285-32942040-33642040-3372

Av författaren/redakt...: Xia, Zhenyuan; Mishukova, Vikto ...; Sollami Delekta, ...; Sun, Jinhua; Sanchez, Jaime S ...; Li, Jiantong, 19 ...; visa fler...; Palermo, Vincenz ...; visa färre...

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