Multi-stage explosion of lignin: a new horizon for constructing defect-rich carbon towards advanced lithium ion storage

Wang, Caiwei; Yang, Dongjie; Huang, Si; Qin, Yanlin; Zhang, Wenli; Qiu, Xueqing

doi:10.1039/d2gc01635d

Cited by 16 publications

(5 citation statements)

References 59 publications

(99 reference statements)

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“…Moreover, Raman spectroscopy was employed to demonstrate the effect of electrodepositions on the carbon substrate. As shown in Figure S6, the I D / I G (the intensity ratio of the D-peak to the G-peak) value increases significantly and gradually from the carbon fiber paper (CFP) to the CoRu alloy and to CoRu/CoRuP, which indicates that potential transients under pulsed and CV conditions activate the carbon substrate. , …”

Section: Resultsmentioning

confidence: 93%

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Yao,

Wu,

Zhang

et al. 2023

ACS Sustainable Chem. Eng.

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Interface modification and electronic alteration of electrocatalysts are indispensable to achieve efficient water splitting for hydrogen production. Herein, a greatly efficient, pH-universal electrocatalyst for hydrogen production is reported by resourcefully introducing the heterointerface and heteroatom with two-step electrodeposition processes. The established cobalt-doped Ru/ RuP 4 nanoheterostructure (CoRu/CoRuP) electrocatalyst demonstrates exceptional hydrogen evolution reaction (HER) activity and durability over a wide pH range, attaining ultralow overpotentials of 31, 30, and 24 mV at 10 mA cm −2 in 1.0 M phosphate buffer solution (PBS), 1.0 M KOH, and 0.5 M H 2 SO 4 , respectively. The optimized electronic structure of CoRu/CoRuP is proved by detailed structural characterization and density-functional theory (DFT) calculation, implying that the d-band center shifts downward by 0.21 eV compared with that of the CoRu catalyst, which contributes to the production of hydrogen intermediates and H-desorption for the HER. In addition, interfacial modification for the CoRu/CoRuP catalyst contributes to the expansion of the electrochemical active surface and the production of hydrogen intermediates in the HER Volmer step. This research highlights the importance of interfacial properties and electronic structure in determining catalytic activity and suggests novel approaches for designing efficient, nanoscale, complex interfacial structure electrocatalysts.

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Section: Resultsmentioning

confidence: 93%

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Yao,

Wu,

Zhang

et al. 2023

ACS Sustainable Chem. Eng.

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“…The high-resolution N 1s spectra demonstrate the co-existence of pyridinic nitrogen (N-6, 399.1 eV), pyrrolic nitrogen (N-5, 400.3 eV), and graphitic nitrogen (N–Q, 401.6 eV) (Figure S5b). The high-resolution S 2p spectra can be deconvoluted into four peaks of C–S/S–S at 163.9/165.1 eV and sulfate species at 168.1/169.5 eV, respectively (Figure S5c). The CO groups can reversibly react with lithium ions, which is mainly responsible for accommodating more lithium ions due to the relative high percentage .…”

Section: Resultsmentioning

confidence: 99%

Explosion Strategy Engineering Oxygen-Functionalized Groups and Enlarged Interlayer Spacing of the Carbon Anode for Enhanced Lithium Storage

Wang

Yang

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Amorphous carbon monoliths with tunable microstructures are candidate anodes for future lithium-based energy storage. Enhancing lithium storage capability and solid-state diffusion kinetics are the precondition for practical applications. Transforming intrinsic oxygen-rich defects into active sites and engineering enlarged interlayer spacing are of great importance. Herein, a novel explosion strategy is designed based on oxalate pyrolysis producing CO and CO2 to successfully prepare lignin-derived carbon monolith (LSCM) with active carbonyl (CO) groups and enlarged interlayer spacing. Explosion promotes the demethylation of methoxyl groups and cleavage of carboxyl groups to form CO groups. CO2 etches carbon atoms in a short time to improve the heteroatom level, expanding the interlayer spacing. ZnC2O4 is decomposed at 400 °C, simultaneously producing CO and CO2, which constructs less CO groups and large interlayer spacing. MgC2O4 is decomposed at 450 and 480 °C, staged-weakly producing CO and CO2, which constructs more CO groups and larger interlayer spacing. CaC2O4 is decomposed at 480 and 700 °C, staged-uniformly producing CO and CO2, which constructs abundant CO groups and largest interlayer spacing. The LSCM prepared by staged-uniform explosion exhibits high lithium storage capacity, superior rate capability, and cycling performance. The assembled lithium ion capacitor device achieves excellent energy/power densities of 78 Wh kg–1/100 W kg–1 and superior durability (capacitance retention of 8 4.6% after 20,000 cycles). This work gives a novel insight to engineer advanced oxygen-functionalized carbons for enhanced lithium storage.

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“…Converting lignin into high-value materials represents an effective strategy to address this predicament. Lignosulfonate is widely recognized as an ideal precursor for carbon materials due to its abundant availability, cost-effectiveness, and remarkable water solubility. − In a previous investigation, we successfully activated sodium lignosulfonate using zinc oxalate and transformed it into hierarchical porous carbon nanosheets with excellent electrochemical properties for supercapacitor applications . Recently, researchers have synthesized a series of lignin carbon/metal compound composites, such as carbon/WO 3 , carbon/Ni 3 Co 1 WO 4 , and carbon/SnO 2 .…”

Section: Introductionmentioning

confidence: 99%

Lignosulfonate-Assisted Synthesis of Porous Carbon-Supported MnO₂ Composites with Reinforced Interface Bonding for High-Performance Asymmetric Supercapacitors

Fu,

Qiu,

Yang

2024

Ind. Eng. Chem. Res.

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Carbon/transition metal oxide composites exhibit promising potential as electrode materials for energy storage, but regulating their interfacial composite structures remains a formidable challenge. In this work, we develop a lignosulfonate-assisted synthesis strategy to fabricate a porous carbon-supported MnO 2 composite (LSC/MnO 2 -2) with a robust interface for asymmetric supercapacitors (ASCs). The functionalized lignin porous carbon, achieved through π−π interactions with lignosulfonate, exhibited improved dispersibility, thereby facilitating the deposition of MnO 2 onto the carbon matrix. Consequently, LSC/MnO 2 -2 demonstrates uniform MnO 2 loading and enhanced interfacial bonding. The robust interaction between Mn sites and the lignosulfonate-functionalized carbon substrate can promote electron transfer and ion transfer kinetics, effectively activating the electrochemical activity of MnO 2 . The as-prepared LSC/MnO 2 -2 demonstrates high specific capacitances of 750 F/g at 0.5 A/g and 400 F/g at 10.0 A/g in a 1 M KOH electrolyte. Furthermore, the assembled ASC exhibits an outstanding energy density of 54.4 Wh/ kg at 998.2 W/kg and excellent cyclic stability (94.7% retention over 10,000 cycles at 2.0 A/g). This study presents an alternative method to precisely control the deposition of metal oxides onto carbon materials, aiming to enhance the performance of carbon composites.

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Multi-stage explosion of lignin: a new horizon for constructing defect-rich carbon towards advanced lithium ion storage

Abstract: A novel strategy of multi-stage explosion through CaC2O4 decomposition was designed to prepare defect-rich popcorn-like lignin-derived mesoporous carbon cages with 2D/3D structures and interconnected mesoporosity for advanced lithium ion storage.

Cited by 16 publications

References 59 publications

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Explosion Strategy Engineering Oxygen-Functionalized Groups and Enlarged Interlayer Spacing of the Carbon Anode for Enhanced Lithium Storage

Lignosulfonate-Assisted Synthesis of Porous Carbon-Supported MnO₂ Composites with Reinforced Interface Bonding for High-Performance Asymmetric Supercapacitors

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Multi-stage explosion of lignin: a new horizon for constructing defect-rich carbon towards advanced lithium ion storage

Abstract: A novel strategy of multi-stage explosion through CaC2O4 decomposition was designed to prepare defect-rich popcorn-like lignin-derived mesoporous carbon cages with 2D/3D structures and interconnected mesoporosity for advanced lithium ion storage.

Cited by 16 publications

References 59 publications

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Construction of a CoRu/CoRuP Heterogeneous Electrocatalyst for Efficient pH-Universal Hydrogen Production

Explosion Strategy Engineering Oxygen-Functionalized Groups and Enlarged Interlayer Spacing of the Carbon Anode for Enhanced Lithium Storage

Lignosulfonate-Assisted Synthesis of Porous Carbon-Supported MnO2 Composites with Reinforced Interface Bonding for High-Performance Asymmetric Supercapacitors

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Resources

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Lignosulfonate-Assisted Synthesis of Porous Carbon-Supported MnO₂ Composites with Reinforced Interface Bonding for High-Performance Asymmetric Supercapacitors