Ping Liu

Name: 刘萍; Ping Liu

Organization: Shanghai Jiaotong University , China

Department:

Title: Associate Professor(PhD)

Chemicals
References

Ionothermally synthesized hierarchical porous Schiff-base-type polymeric networks with ultrahigh specific surface area for supercapacitors

Co-reporter:Yuhang Zhao;Xiaodong Zhuang;Dongqing Wu;Fan Zhang;Yuezeng Su

RSC Advances (2011-Present) 2017 vol. 7(Issue 32) pp:19934-19939

Publication Date(Web):2017/03/31

DOI:10.1039/C7RA01203A

A hierarchical porous polymeric network (HPPN) with ultrahigh specific surface area up to 2870 m2 g−1 was synthesized via a one-step ionothermal synthesis method without using templates. As the electrode material of supercapacitors, HPPN-400-30 exhibits a specific capacitance of 129 F g−1 at 10 A g−1 and demonstrates an excellent cycling stability with 99.93% capacitance retention after 10 000 cycles at 10 A g−1. Furthermore, an all-solid-state supercapacitor (ASSS) based on HPPN-400-30 exhibits an energy density of 8.1 W h kg−1 at the high power density of 5027 W kg−1.

Graphene-directed two-dimensional porous carbon frameworks for high-performance lithium–sulfur battery cathodes

Co-reporter:Jieqiong Shan, Yuxin Liu, Yuezeng Su, Ping Liu, Xiaodong Zhuang, Dongqing Wu, Fan Zhang and Xinliang Feng

Journal of Materials Chemistry A 2016 vol. 4(Issue 1) pp:314-320

Publication Date(Web):17 Nov 2015

DOI:10.1039/C5TA08109B

Graphene-directed two-dimensional (2D) nitrogen-doped porous carbon frameworks (GPF) as the hosts for sulfur were constructed via the ionothermal polymerization of 1,4-dicyanobenzene directed by the polyacrylonitrile functionalized graphene nanosheets. As cathodes for lithium–sulfur (Li–S) batteries, the prepared GPF/sulfur nanocomposites exhibited a high capacity up to 962 mA h g−1 after 120 cycles at 2 A g−1. A high reversible capacity of 591 mA h g−1 was still retained even at an extremely large current density of 20 A g−1. Such impressive electrochemical performance of GPF should benefit from the 2D hierarchical porous architecture with an extremely high specific surface area, which could facilitate the efficient entrapment of sulfur and polysulfides and afford rapid charge transfer, fast electronic conduction as well as intimate contact between active materials and the electrolyte during cycling.

A facile microwave-hydrothermal approach towards highly photoluminescent carbon dots from goose feathers

Co-reporter:Ruili Liu, Jing Zhang, Mengping Gao, Zhilian Li, Jinyang Chen, Dongqing Wu and Ping Liu

RSC Advances 2015 vol. 5(Issue 6) pp:4428-4433

Publication Date(Web):09 Dec 2014

DOI:10.1039/C4RA12077A

Biomass such as hair, silk and feathers is regarded as an appealing candidate for the fabrication of heteroatom-doped carbon nanomaterials. In this work, we report a facile and efficient approach to synthesise photoluminescent carbon dots (CDs) from goose feathers by microwave-hydrothermal treatment. These goose feather generated CDs possess a uniform two-dimensional morphology with a diameter of ∼21.5 nm and a height of ∼4.5 nm. Inheriting the heteroatom-rich nature of goose feathers, the resulting CDs contain a large amount of oxygen, nitrogen and sulfur atoms and have a high photoluminescence efficiency of ∼17.1%. Used as label-free photoluminescence probes, the goose feather derived CDs exhibit highly sensitive and selective detection behavior of Fe3+ ions with a low detection limit of 196 nM.

Compact Coupled Graphene and Porous Polyaryltriazine-Derived Frameworks as High Performance Cathodes for Lithium-Ion Batteries

Co-reporter: Yuezeng Su;Yuxin Liu;Dr. Ping Liu;Dr. Dongqing Wu;Dr. Xiaodong Zhuang; Fan Zhang; Xinliang Feng

Angewandte Chemie 2015 Volume 127( Issue 6) pp:1832-1836

Publication Date(Web):

DOI:10.1002/ange.201410154

Abstract

It is highly desirable to develop electroactive organic materials and their derivatives as green alternatives of cathodes for sustainable and cost-effective lithium-ion batteries (LIBs) in energy storage fields. Herein, compact two-dimensional coupled graphene and porous polyaryltriazine-derived frameworks with tailormade pore structures are fabricated by using various molecular building blocks under ionothermal conditions. The porous nanosheets display nanoscale thickness, high specific surface area, and strong coupling of electroactive polyaryltriazine-derived frameworks with graphene. All these features make it possible to efficiently depress the dissolution of redox moieties in electrolytes and to boost the electrical conductivity of whole electrode. When employed as a cathode in LIBs, the two-dimensional porous nanosheets exhibit outstanding cycle stability of 395 mAh g⁻¹ at 5 A g⁻¹ for more than 5100 cycles and excellent rate capability of 135 mAh g⁻¹ at a high current density of 15 A g⁻¹.

Compact Coupled Graphene and Porous Polyaryltriazine-Derived Frameworks as High Performance Cathodes for Lithium-Ion Batteries

Co-reporter: Yuezeng Su;Yuxin Liu;Dr. Ping Liu;Dr. Dongqing Wu;Dr. Xiaodong Zhuang; Fan Zhang; Xinliang Feng

Angewandte Chemie International Edition 2015 Volume 54( Issue 6) pp:1812-1816

Publication Date(Web):

DOI:10.1002/anie.201410154