![]() ![]() To configure high-performance hybrid supercapacitors, it is of importance to modulate & activate the electrochemical reaction properties of the materials. Among them, the hybrid supercapacitor, which is comprised of battery-like and supercapacitor-like charge-storage processes, grows into a significant type because of the combined (battery-like) high energy density and (supercapacitor-like) high power density 4, 5, 6. With the gradually growing energy demand and global climate change, the development of electrochemical energy-storage devices for the sustainable energy system has become a research hotspot 1, 2, 3. This contribution provides some insights for controllable structure design and modulation toward high-efficient energy storage. Theoretical and operando investigations further demonstrate that the Mn sites boost ion adsorption/transport and electron transfer, and the Mn-induced effect remains active after multiple charge/discharge processes. We clarified that the moderate electron transfer between the released Mn species and Co 2+ serves as the pre-step, while the compressive strain induces structural deformation with promoted reaction dynamics. The well-tailored Mn/NiCo-LDH displays a capacity up to 518 C g −1 (1 A g −1), a remarkable rate performance −1) and a long cycle life (without capacity decay after 10,000 cycles). Herein, triggered by mismatching integration of Mn sites, we configured wrinkled Mn/NiCo-LDH with strains and defects, where promoted mass & charge transport behaviors were realized. Layered double hydroxides (LDH) have been extensively investigated for charge storage, however, their development is hampered by the sluggish reaction dynamics. ![]()
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