Qiang Zhang

Tsinghua University

Qiang Zhang

 Dendrite-FreeLi metal Anodewith Graphene in Safe Rechargable Batteries

 

Qiang Zhang, Xin-Bing Cheng

 

Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China 100084

Li metal is considered as the Holy Grailelectrode of energy storage systems due to its extremely high theoretical specific capacity (3860 mAh g1) and the lowest negative redox potential (3.040 V vs. standard hydrogen electrode).[1-3] However, the formation of Li dendrites is a crucial issue that hinders the practical demonstration of high-energy-density metallic Li batteries.[4]

To render a stable Li plating/stripping, we propose a composite Li metal anode with a structured matrix to accommodate Liand a stable solid electrolyte interphase (SEI) film to protect Li from the corrosion of electrolyte. The structured anode is adopted to suppress Li dendrite growth to enhance the safety, while the SEI film is adopted to reduce the side reactions to improve the efficiency.We have proofed our concepts by designing the conductive Li7B6 matrix,[5]2D graphene framework,[6-7]lithiophilic glass fiber,[8]and the highly efficient electrolyte additives to build a dense SEI film on the Li metal anode, such as FEC[9] and Li2S5[10-12]. Composite Li metal anode is very hopeful to render a safe and efficient Li metal batteries.

 

Reference

[1] Cheng X-B, Zhang R, Zhao C-Z, Wei F, Zhang J-G, Zhang Q. Adv. Sci. 2016, 3, 1500213.

[2] Cheng X-B, Zhang Q. J. Mater. Chem. A 2015, 3, 7207.

[3] Zhang R, Li N-W, Cheng X-B,Yin Y-X,Zhang Q,Guo Y-G. Ad. Sci. 2017, 4, 1600445

[4] Cheng X-B, Yan C, Huang J-Q, Li P, Zhu L, Zhao L, Zhang Y, Zhu W, Yang S-T, Zhang Q. Energy Storage Mater. 2017, 6, 18.

[5] Cheng X-B, Peng H-J, Huang J-Q, Wei F, and Zhang Q. Small 2014, 10, 4257.

[6] Cheng X-B, Peng H-J, Huang J-Q, Zhang R, Zhao C-Z, and Zhang Q. ACS Nano 2015, 9, 6373.

[7] Zhang R, Cheng X-B, Zhao C-Z, Peng H-J, Shi J-L, Huang J-Q, Wang J, Wei F, Zhang Q. Adv. Mater. 2016, 28, 1504117.

[8] Cheng X-B, Hou T-Z, Zhang R, Peng H-J, Zhao C-Z, Huang J-Q, Zhang Q. Adv. Mater. 2016, 28, 1506124.

[9] Zhang X-Q, Cheng X-B, Chen X,1 Yan C, Zhang Q. Adv. Funct. Mater. 2017, 27, 1605989.

[10]Zhao C-Z, Cheng X-B, Zhang R, Peng H-J, Huang J-Q, Ran, R, Huang, Z-H, Wei F, Zhang Q. Energy Storage Mater. 2016, 3, 77.

[11] Yan C, Cheng X-B, Zhao C-Z, Huang J-Q, Yang S-T, Zhang Q. J. Power Sources 2016, 327, 212.

[12] Cheng X-B, Yan C, Chen X, Guan C, Huang J-Q, Peng H-J, Zhang R, Yang S-T, Zhang Q. Chem 2017, 2, 258.

Qiang Zhang graduated in 2009 from the department of chemical engineering, Tsinghua University, China. After stay in Case Western Reserve University, USA, and Fritz Haber Institute of the Max Planck Society, Germany, he was appointed an associate professor of chemical engineering of Tsinghua University in 2011. He held the Newton Advanced Fellowship from Royal Society, UK and the NSFC Young Scholar in China.

His current research interests are advanced energy materials (lithium metal anode, lithium sulfur batteries, electrocatalysis). He had been served as referee for Nature Enegy, Sci. Adv., Nature Commun., and so on. He have published around 150 publications on Nature Comm, CHEM, Sci Adv, EES, Adv Mater, Angew Chem, JACS, Nano Energy, and on, among then 33 of them are ESI highly cited paper, a total citation of around 10000 times and an h-index of 54.

More details can be found his Google Scholar link:

http://scholar.google.com/citations?user=qkcc0OYAAAAJ&hl=en

and/or ResearchID link:

http://www.researcherid.com/rid/B-1799-2012.

 

Web: http://www.chemeng.tsinghua.edu.cn/scholars/zhangqiang/index.htm

 

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