Facile Synthesis of Ni–Mn Layered Double Hydroxide Nanopetals on 3D Reduced Graphene Oxide/Ni Foam for High-performance Supercapacitors

Qi Tang; Menghan Ye; Li Ma; Tao Zhou; Mengyu Gan; Fabing Yan

추천

검색

자료유형: 학술저널

저자정보: Qi Tang (Chongqing Jiaotong University) Menghan Ye (Chongqing University) Li Ma (Chongqing University) Tao Zhou (Shanxi Datong University) Mengyu Gan (Chongqing University) Fabing Yan (Chongqing University)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.15 No.3

발행연도: 2020.1

수록면: 81 - 91 (11page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In this work, the Ni–Mn layered double hydroxide (Ni–Mn LDH) nanopetals are fabricated on three-dimensional reduced graphene oxide/Ni foam (RGO/NF) by one-step hydrothermal method, in which the suspension of graphene oxide (GO) is directly reduced by nickel foam (NF) to obtain NF/RGO. The composite, which consists of interconnected Ni–Mn LDH nanopetals, forms a macroporous structure. Such an open space can promote electrolyte dispersion and ion diffusion of active substances, thus enhancing capacitance performance. Remarkable, during crystal growth, RGO can not only provide active sites for Ni–Mn LDH nanopetals, but also effectively connect Ni–Mn LDH nanopetals to NF, further promoting the electrochemical behavior of composite material. Moreover, RGO possess reasonable chemical stability which can improve the mechanical properties of the composite to obtain good stability. The experimental results show that the NF/RGO electrode material with Ni–Mn LDH nanopetals has excellent specific capacitance of 2250 F g -1 at 1 A g -1, good rate performance (the capacitance retention rate is still 64.0% at 10 A g -1) and excellent cycle life (45.1% at 10 A g -1 after 5000 cycles). NR/NM–LDH is used as the positive electrode and activated carbon is used as the negative electrode to assemble the asymmetric supercapacitor, the proper power density and energy density indicates that the NR/NM–LDH composite has great potential as an electrode material for supercapacitors.

#Reduced graphene oxide #Ni foam #direct reduction #layered double hydroxides

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!