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ACS Applied Materials & Interfaces

ACS Applied Materials & Interfaces

IF: 8.3
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Carbon Dot Regulating NiSe/MnO2 Heterostructures for High-Performance Supercapacitors

Published:3 December 2024 DOI: 10.1021/acsami.4c13282
Xiaotian Xie, Yi Xu, Jie Liu, Dongtian Wang, Tingting Lv, Fanshu Yuan, Qianli Zhang

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 kg1 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.

Substances (1)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Lignin 9005-53-2 unspecified 132 suppliers $30.00-$320.00