Loofah-derived carbon as an anode material for potassium ion and lithium ion batteries

Wu, Zhenrui1; Wang, Liping1; Huang, Jie2; Zou, Jian1; Chen, Shulin3; Cheng, Hua4; Jiang, Cheng1; Gao, Peng3; Niu, Xiaobin1

2019-05-20

10.1016/j.electacta.2019.03.165

ELECTROCHIMICA ACTA   影响因子和分区

0013-4686

1873-3859

In this work, we report a facile and inexpensive strategy to synthesize loofah-derived pseudo-graphite (LPG) through alkali treatment process followed by a one-step pyrolysis procedure. This mesoporous hard carbon material offers superb dual functionality for both lithium-ion battery (LIB) and potassiumion battery (KIB) anodes. Tested against lithium and potassium, LPG delivers a specific capacity of 225 mAh.g(-1) in LIBs and 150 mAh.g(-1) in KIBs after 200 cycles at the current density of 100 mA g(-1). The good performance of LPG for both LIBs and KIBs mainly originates from its dual storage mechanism. On one hand, wider layered pseudo-graphite units provide space for Li+/K+ intercalation at higher voltages (>0.17 V in LIBs, >0.56 V in KIBs). On the other hand, highly accessible mesoporous structure and defect-activated units in the near-surface region make it possible for Li+/K+ deposition at low voltages. The different performance of LPG in LIBs and KIBs may originate from varied ion-storage mechanisms. Despite the similar diffusion coefficient (D+), lower capacity of LPG for potassium can be contributed to its limited intercalation kinetics in higher voltage (>0.56 V) and evidently higher resistance in the charge-transfer process (R-ct). (c) 2019 Elsevier Ltd. All rights reserved.

Biomass-derived carbon Loofah Potassium ion battery Lithium ion battery Chemical diffusion coefficient

SCI ; EI

英语

其他

Guangdong Special Support for the Science and Technology Leading Young Scientist[2016TQ03C919]

Electrochemistry

Electrochemistry

WOS:000464148700047

PERGAMON-ELSEVIER SCIENCE LTD

20191506762229

Anodes ; Charge transfer ; Diffusion ; Graphite ; Ions ; Potassium

Alkali Metals:549.1 ; Electron Tubes:714.1 ; Chemical Reactions:802.2

CHEMISTRY

Web of Science

1.Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Sch Mat & Energy, Chengdu 610054, Peoples R China
2.Beijing WeLion New Energy Technol Co LTD, Beijing 102402, Peoples R China
3.Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Wu, Zhenrui,Wang, Liping,Huang, Jie,et al. Loofah-derived carbon as an anode material for potassium ion and lithium ion batteries[J]. ELECTROCHIMICA ACTA,2019,306:446-453.

Wu, Zhenrui.,Wang, Liping.,Huang, Jie.,Zou, Jian.,Chen, Shulin.,...&Niu, Xiaobin.(2019).Loofah-derived carbon as an anode material for potassium ion and lithium ion batteries.ELECTROCHIMICA ACTA,306,446-453.

Wu, Zhenrui,et al."Loofah-derived carbon as an anode material for potassium ion and lithium ion batteries".ELECTROCHIMICA ACTA 306(2019):446-453.