Carbon Dot Regulating NiSe/MnO2 Heterostructures for High-Performance Supercapacitors

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Materials & Interfaces Pub Date : 2024-12-03 DOI:10.1021/acsami.4c13282

Xiaotian Xie, Yi Xu, Jie Liu, Dongtian Wang, Tingting Lv, Fanshu Yuan, Qianli Zhang

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Abstract

Structural regulation is an effective strategy for enhancing an electrode's energy storage performance. Herein, lignin-derived carbon dots (LCDs) are explored for the structural tailoring of NiSe/MnO₂ to improve the electrochemical performance in supercapacitors. After the dendritic NiSe microcrystals are synthesized via a microwave method, NF/NiSe/MnO₂-LCDs are prepared by another microwave process to form a composite mixture of LCDs, MnO₂, and NF/NiSe. At 1 A g^–1, NF/NiSe/MnO₂-LCDs possess a specific capacitance of 2268 F g^–1 and superb lifespans (84.43%, 3000 cycles) for their enhanced ion transport and rapid electron transfer. In addition, the NF/NiSe/MnO₂-LCDs//AC ASC showed an energy density of 51.62 Wh kg^–1 at 800 W kg^–¹ and extraordinary endurance with 88.46% retention (7000 loops). The NF/NiSe/MnO₂-LCDs offer ideas to improve the capacity retention and storage capacity of electrodes for supercapacitors.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.