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Preparation of Multi-pore Carbon Based on Black Liquor from Kraft Pulping and Its Application in Lithium Ion Battery Anode Materials
Received:August 05, 2021  
DOI：10.11980/j.issn.0254-508X.2022.02.001
Key Words:pulping black liquor  porous carbon  self-activation  S-doped  lithium-ion batteries
Fund Project:国家重点研发计划项目（2019YFC1905904）；山东省重点研发计划（2019JZZY010326，2019JZZY010328）；山东省科教产融合创新试点工程（2020KJC-ZD14）。
Author NameAffiliationPostcode
MIAO Wenkang State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
YANG Guihua* State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
LI Fengfeng State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
PENG Jianmin State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
JIANG Qimeng State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
CHEN Jiachuan State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology of Education Ministry of China， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
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Abstract:In order to increase the utilization value of papermaking waste liquid， sulfur-doped porous carbon using black liquor from kraft pulping as raw material， was prepared at different calcination temperatures without adding sulfur source and activator， and subsequently utilized as anode material for lithium ion batteries. The specific discharge capacity of porous carbon material calcinated at 600℃ （black liquor-600） was as high as 688 mAh/g and the first time coulomb efficiency was 53.96%. At charge and discharge current density of 2 A/g， black liquor-600 could maintain a specific charge and discharge capacity of approximately 150 mAh/g； at current density of 1 A/g the capacity retention rate after 1000 cycles of which was 68%， showing good cycle and rate performance. After further characterized by XRD， Raman spectroscopy， SEM， TEM， elemental analysis， surface area and pore size distribution， and XPS， it was revealed that black liquor-600 had large layer spacing of 0.392 nm， sulfur doping of 2.94%， specific surface area of 190.8 m2/g， as well as abundant defects and pore structure ， endowing such carbon materials with excellent electrochemical activity and stability.
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