title: Two-Dimensional Porous Carbon: Synthesis and Ion-Transport Properties.
abstract: Their chemical stability, high specific surface area, and electric conductivity enable porous carbon materials to be the most commonly used electrode materials for electrochemical capacitors (also known as supercapacitors). To further increase the energy and power density, engineering of the pore structures with a higher electrochemical accessible surface area, faster ion-transport path and a more-robust interface with the electrolyte is widely investigated. Compared with traditional porous carbons, two-dimensional (2D) porous carbon sheets with an interlinked hierarchical porous structure are a good candidate for supercapacitors due to their advantages in high aspect ratio for electrode packing and electron transport, hierarchical pore structures for ion transport, and short ion-transport length. Recent progress on the synthesis of 2D porous carbons is reported here, along with the improved electrochemical behavior due to enhanced ion transport. Challenges for the controlled preparation of 2D porous carbons with desired properties are also discussed; these require precise tuning of the hierarchical structure and a clarification of the formation mechanisms.
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Zheng
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China.
authors.forename: Jiayan
authors.initials: J
authors.lastname: Luo
authors.affiliation: Engineering Laboratory for Functionalized Carbon Materials and Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Lv
authors.affiliation: School of Chemical Engineering, UNSW Australia, Sydney, NSW, 2052, Australia.
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Wang
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China.|Engineering Laboratory for Functionalized Carbon Materials and Shenzhen Key Laboratory for Graphene-based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
authors.forename: Quan-Hong
authors.initials: QH
authors.lastname: Yang
keywords: activation; biomass carbonization; graphene; supercapacitors; templates