Nitrogen and sulfur-codoped porous carbon derived from a BSA/ionic liquid polymer complex: multifunctional electrode materials for water splitting and supercapacitors.
Nitrogen and sulfur-codoped porous carbon derived from a BSA/ionic liquid polymer complex: multifunctional electrode materials for water splitting and supercapacitors.
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由 BSA/离子液体聚合物复合物衍生的氮和硫共掺杂多孔碳：用于水分解和超级电容器的多功能电极材料
DOI：
10.1039/c8ra09700c
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发表时间：
2019-02-05
期刊：
影响因子：
3.9
通讯作者：
Xiong, Yubing
中科院分区：
文献类型：
--
作者：
Liu, Xiaojun;Yu, Junrui;Song, Honghong;Song, Pengfei;Wang, Rongming;Xiong, Yubing
以疏水性离子液体聚合物（PIL）与牛血清白蛋白（BSA）通过静电相互作用合成碳前驱体。然后，通过直接碳化法制备了氮硫共掺杂的微孔/介孔炭（NSPC）。新开发的NSPC材料具有优异的HER/OER电催化活性和稳定性，以及出色的电容性能。值得注意的是，在1000度热解的NSPC（NSPC-1000）呈现出与RHE相比低至172 mV的过电位（无iR校正），以实现10 mA cm−2的电流密度和0.5 M H2SO 4中HER的44.3 mV dec−1的塔菲尔斜率，以及0.1 M KOH中OER与RHE相比460 mV的低过电位。此外，NSPC-1000在0.1 A g−1的电流密度下提供高达495 F g−1的比电容。NSPC在电催化水分解和超级电容器中的优异性能源于其N/S共掺杂和微/介孔分级结构的协同效应。我们通过将生物大分子和合成聚合物相结合的简单方案为开发用于能源相关应用的有效，易于扩展和无金属杂原子掺杂的碳材料提供了一种新的策略。
Bovine serum albumin (BSA) was complexed with a hydrophobic ionic liquid polymer (PIL) via electrostatic interaction to fabricate a carbon precursor. Then, a novel nitrogen (N) and sulfur (S) codoped micro-/mesoporous carbon (NSPC) was obtained via direct carbonization of the interpolyelectrolyte BSA@PIL complex. The newly developed NSPC materials exhibited excellent HER/OER electrocatalytic activity and stability, as well as outstanding capacitance performance. Remarkably, NSPC pyrolyzed at 1000 degrees (NSPC-1000) presented an overpotential as low as 172 mV vs. RHE (without iR correction) to achieve a current density of 10 mA cm−2 and a Tafel slope of 44.3 mV dec−1 in 0.5 M H2SO4 for HER, as well as a low overpotential of 460 mV vs. RHE in 0.1 M KOH for OER. Furthermore, NSPC-1000 offers a specific capacitance as high as 495 F g−1 at a current density of 0.1 A g−1. Such excellent performance of NSPC in electrocatalytic water splitting and supercapacitors originates from the synergistic effects of its N/S-codoping and micro-/mesoporous hierarchical architecture. Our facile protocol through combining biomacromolecules and synthetic polymers offers a new strategy in the development of effective, readily scalable and metal-free heteroatom-doped carbon materials for energy-related applications.
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