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杰青团队!深圳大学,新年首篇Nature Sustainability!

  • 2026-04-07 23:45:56
杰青团队!深圳大学,新年首篇Nature Sustainability!

锂硫电池是下一代储能的首选体系之一,具有高理论能量密度,且硫天然储量丰富、成本低、可回收,可持续性突出。然而,可溶性多硫化锂(LiPS)的穿梭效应与嵌锂时显著的体积膨胀,限制了活性物质利用率与循环寿命;硫及其放电产物的绝缘性、缓慢的氧化还原动力学,也严重制约倍率性能。克服这些化学与力学瓶颈,是锂硫电池从实验室走向工业化的关键。

为固定多硫化物并提高正极导电性,研究者设计了多种复合载体材料。其中,空心多层壳结构(HoMS)作为硫载体展现出独特优势:

1. 内部空隙可容纳硫嵌锂时的体积膨胀;

2. 多层壳提供多重物理屏障与高比表面积吸附位点,抑制穿梭效应;

3. 互连壳结构缩短物质与电荷扩散距离,加速氧化还原。

尽管专用载体推动了领域发展,但在高硫负载下多硫化物穿梭仍难以解决。多硫化物向 LiS/Li转化动力学缓慢,导致中间产物局部累积,最终超出载体束缚能力。为此,近期策略引入催化位点加速转化,但目前催化剂多集中于金属或金属基化合物。

然而,一个关键矛盾仍被忽视:循环寿命与实际能量密度之间的固有权衡。载体与催化剂虽提升稳定性,但引入了大量非活性质量,显著降低基于正极总质量的比容量与能量密度。因此,开发兼具高效催化、强束缚能力,且不牺牲体系能量输出的多功能材料,是本领域极具挑战性的核心课题。

深圳大学王丹/于然波&过程工程所王江艳&苏州大学李亮&上海交大梁正携手提出一种sp‑氮掺杂石墨炔多层壳结构,将吸附位点与催化位点在空间上精准耦合,从根本上解决了载体质量与电化学性能之间的矛盾。得益于独特的 sp²–sp 杂化碳骨架,石墨炔可高效掺杂,并通过偶极偶极相互作用强吸附多硫化锂。

原位表征与理论计算证实:sp‑N 与相邻碳原子之间优异的轨道重叠,实现高效电子转移与电荷重分布,形成高密度极化位点,同时增强多硫化物锚定并催化其向 LiS/Li转化。此外,由石墨炔纳米片构筑的 HoMS 框架有利于锂离子全方向扩散,并提供多级空间限域,抑制多硫化物穿梭。

最终,在93.9% 超高硫负载下,0.1C 时基于硫+载体总质量的比容量仍达1462 mAh·g¹(接近理论值);10C  600 次循环后,能量密度1384.5 Wh·kg¹,功率密度29457.4 W·kg¹。软包电池实现457 Wh·kg¹,为高性能、可持续锂硫电池的商业化提供了重要路线。

王丹博士生导师,国家基金委杰出青年基金获得者,享受国务院政府特殊津贴专家,科技部中青年科技创新领军人才入选者。 在吉林大学化学系取得学士和硕士学位,在日本文部省奖学金资助下赴日本留学, 获日本山梨大学材料科学与技术专业博士学位。之后在日本京都大学化学研究所等科研机构从事博士后研究。 2004 年入选中国科学院百人计划回国工作,20248月入职深圳大学化学与环境工程学院。

主要从事无机多功能结构体系的合成化学研究,包括中空多壳层结构的设计合成、二维材料的参杂与复合及其在能源、环境、催化和生物等领域的应用。Nature EnergyNature ChemistryNature CommunicationsNature Review ChemistryJACSAngew. Chem. Int. EdAdv. Mater.等期刊发表论文 250 余篇,引用 2.3 万余次, 因子 81,连续6年入选科睿唯安高被引科学家。申请中国发明专利50余项,已获授权30余项,转化2项。

现任中国化学会会士、英国皇家化学会会士、国际溶剂热水热协会理事;《高等学校化学学报》Chemical Research Chinese Universities 执行主编;Materials Chemistry Frontiers 副主编;Energy & Environmental ScienceMatterEnergyChemScience BulletinSci. China Mater.Advanced Science 等期刊编委或顾问编委。曾主持国家重点研发计划课题、 基金委重点项目、重大项目课题、重点国际(地区)合作研究项目、杰出青年基金项目等。

于然波,女,教授/博士生导师,长期从事纳微结构能源环境材料的设计、合成与性能研究,取得了多项创新性研究成果。2000年入选“日本学术振兴会特别研究员”(JSPS Fellowship for Young Scientists);2005年入选“北京市科技新星计划”;2007年入选教育部“新世纪优秀人才支持计划”。主持国家自然科学基金重点项目、面上项目和北京市自然科学基金项目等,作为研究骨干参与国家重点研发计划“973”项目和变革性技术项目等。

目前已在包括ScienceNature EnergyChem. Soc. Rev.Energy Environ. Sci.Adv. Mater.J. Am. Chem. Soc.Angew. Chem. Int. Ed.等高水平专业期刊发表SCI收录论文230余篇(近五年48篇)论文他引10000余次其中高被引论文7, H因子为57。作为第一发明人申请中国发明专利27项,获授权25项。与美国、日本、澳大利亚、香港等高水平研究机构建立长期合作关系。

https://www.nature.com/articles/s41893-026-01794-y

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  1. CONNECT:[ UseTime:0.000994s ] mysql:host=127.0.0.1;port=3306;dbname=c460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001442s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000650s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000556s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001266s ]
  6. SELECT * FROM `set` [ RunTime:0.000484s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001315s ]
  8. SELECT * FROM `article` WHERE `id` = 534813 LIMIT 1 [ RunTime:0.000885s ]
  9. UPDATE `article` SET `lasttime` = 1776954480 WHERE `id` = 534813 [ RunTime:0.001192s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000579s ]
  11. SELECT * FROM `article` WHERE `id` < 534813 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001025s ]
  12. SELECT * FROM `article` WHERE `id` > 534813 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000863s ]
  13. SELECT * FROM `article` WHERE `id` < 534813 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002694s ]
  14. SELECT * FROM `article` WHERE `id` < 534813 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004642s ]
  15. SELECT * FROM `article` WHERE `id` < 534813 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000857s ]
0.108130s