Repurposing paper by-product lignosulfonate as a sulfur donor/acceptor for high performance lithium–sulfur batteries†,Sustainable Energy & Fuels

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Repurposing paper by-product lignosulfonate as a sulfur donor/acceptor for high performance lithium–sulfur batteries†
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2017-11-09 00:00:00 , DOI: 10.1039/c7se00394c
Lu Li _{1,

2,

3,

4} , Liping Huang _{2,

3,

4,

5} , Robert J. Linhardt _{2,

3,

4,

6,

7} , Nikhil Koratkar _{1,

2,

3,

4,

5} , Trevor Simmons _{2,

3,

4,

8,

9}

Affiliation

The recovery and repurposing of biomass are critically important and make a significant contribution to environmental preservation. Lignosulfonate, a by-product of the paper manufacturing industry, is an abundant low cost material with unique potential as a sulfur precursor for high performance cathode materials. In this work, we develop a practical green method of using lignosulfonate as both the donor (decomposition of sulfonic groups (–SO₃H)) of sulfur and the sulfur acceptor in lignosulfonate derived activated carbon. Through a circulatory pyrolysis process with carbon activation and sulfur capture, a high surface area carbon/sulfur composite was obtained. This material was successfully developed into a cathode for a lithium–sulfur battery, which demonstrates outstanding cycling stability with a capacity decay rate as low as 0.1% per cycle over 200 cycles. When the sulfur loading was further increased to 68 wt%, the capacity still reaches as high as 1100 mA h g⁻¹, suggesting its promising potential for applications in the field of high energy storage devices.

中文翻译：

重新使用纸质副产物木质素磺酸盐作为高性能锂硫电池的硫供体/受体†

生物质的回收和再利用至关重要，并为环境保护做出了重要贡献。木质素磺酸盐是造纸工业的副产品，是一种低成本的丰富材料，具有作为高性能阴极材料的硫前体的独特潜力。在这项工作中，我们开发了一种实用的绿色方法，将木质素磺酸盐用作两个供体（磺酸基团的分解（–SO ₃H））中的硫与木质素磺酸盐中的硫受体衍生得到的活性炭。通过具有碳活化和硫捕获的循环热解过程，获得了高表面积的碳/硫复合材料。该材料已成功开发为锂硫电池的正极，具有出色的循环稳定性，在200个循环中，每个循环的容量衰减率低至0.1％。当硫负载量进一步增加到68 wt％时，容量仍高达1100 mA hg ^-1，表明其在高能量存储设备领域的应用前景广阔。

更新日期：2017-11-09

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