Application and carbon footprint evaluation of lignin-based composite materials

Yang, Yanfan; Guan, Yanhua; Li, Chongyang; Xu, Ting; Dai, Lin; Xu, Jinmei; Si, Chuanling

doi:10.1007/s42114-024-00873-y

Cited by 9 publications

(1 citation statement)

References 220 publications

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“…With the growing number of biorefineries and the promotion of the circular economy, there are various routes that are studied for converting lignin into value-added products. Lignin can be used for producing composites (adhesives, lubricants), textiles, fertilizers, etc. − As the main element in the lignin’s complex skeleton is carbon, it is also a promising precursor material to synthesize carbon-based materials. , Therefore, lignin is a sustainable resource that can be used instead of fossil fuels to produce carbonaceous materials for different applications, including catalyst materials. , …”

Section: Introductionmentioning

confidence: 99%

Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction

Kaare,

Volperts,

Plavniece

et al. 2024

ACS Sustainable Resour. Manage.

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Black liquor is hazardous and one of the main byproducts in the pulp and paper industry. Its primary constituent is lignin, a carbonbased molecule serving as a precursor for the synthesis of nanostructured carbon materials. Herein, we have used black liquor as a precursor to synthesize high surface area carbons for use as electrochemical oxygen reduction reaction (ORR) catalysts. The materials were activated by a NaOH treatment and subsequently nitrogen-doped by mixing with dicyandiamide, followed by pyrolysis. Synthesis resulted in catalyst materials that showed high specific surface area (1807 and 1228 m 2 g −1 , respectively), high surface nitrogen content (6.7 and 5.1 at. %, respectively), and the inclusion of chromium and sulfur impurities that originated from the black liquor. The black liquor-based catalyst exhibited high ORR activity in alkaline media with a half-wave potential (E 1/2 ) of 780 mV and an onset potential (E onset ) of 900 mV versus RHE. The resultant Zn−air battery delivered a high peak power density of 112 mW cm −2 at 171 mA cm −2 and a specific capacity of 633 mAh g −1 .

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