Doped carbon-sulfur species nanocomposite cathode for Li--S batteries

Title: Doped carbon-sulfur species nanocomposite cathode for Li--S batteries

We report a heteroatom-doped carbon framework that acts both as conductive network and polysulfide immobilizer for lithium-sulfur cathodes. The doped carbon forms chemical bonding with elemental sulfur and/or sulfur compound. This can significantly inhibit the diffusion of lithium polysulfides in the electrolyte, leading to high capacity retention and high coulombic efficiency.

Inventors:: Wang, Donghai; Xu, Tianren; Song, Jiangxuan

Issue Date:: 2015-12-29

OSTI Identifier:: 1234204

Assignee:: THE PENN STATE RESEARCH FOUNDATION DOEEE

Patent Number(s):: 9,225,011

Application Number:: 13/938,527

Contract Number:: EE0005475

Resource Relation:: Patent File Date: 2013 Jul 10

Research Org:: THE PENN STATE RESEARCH FOUNDATION, University Park, PA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 25 ENERGY STORAGE; 77 NANOSCIENCE AND NANOTECHNOLOGY

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Other works cited in this record:

A highly ordered nanostructured carbon–sulphur cathode for lithium–sulphur batteries
journal, May 2009

Ji, Xiulei; Lee, Kyu Tae; Nazar, Linda F.
Nature Materials, Vol. 8, Issue 6, p. 500-506
DOI: 10.1038/nmat2460

Electrochemical capacitor performance of N-doped mesoporous carbons prepared by ammoxidation
journal, May 2008

Kim, Nam Dong; Kim, Wooyoung; Joo, Ji Bong
Journal of Power Sources, Vol. 180, Issue 1, p. 671-675
DOI: 10.1016/j.jpowsour.2008.01.055

Nitrogen-Doped Ordered Mesoporous Graphitic Arrays with High Electrocatalytic Activity for Oxygen Reduction
journal, March 2010

Liu, Ruili; Wu, Dongqing; Feng, Xinliang
Angewandte Chemie International Edition, Vol. 49, Issue 14, p. 2565-2569
DOI: 10.1002/anie.200907289

Sulfur-Doped Graphene as an Efficient Metal-free Cathode Catalyst for Oxygen Reduction
journal, December 2011

Yang, Zhi; Yao, Zhen; Li, Guifa
ACS Nano, Vol. 6, Issue 1, p. 205-211
DOI: 10.1021/nn203393d

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