近日，陕西科技大学物理与信息科学学院丁书凯副教授团队在石墨烯基功能材料研究方面取得系列突破性进展，相关成果连续发表于知名期刊《Nano Letters》与《Advanced Science》，涵盖类脑计算神经形态存储器和超快充钾/钠离子电池两大方向，展现出从物理机理调控、材料设计到器件集成的完整技术链条。
突破多层石墨烯壁垒：新型神经形态存储器助力类脑计算
传统冯·诺依曼计算架构受限于“存储墙”瓶颈，难以满足人工智能对高速、低功耗计算的需求。基于质子调控与氢化的石墨烯神经形态器件被认为是突破方向之一，但多层石墨烯质子不可渗透的问题长期制约其发展。丁书凯课题组创新采用有机纳米碳源（ONCS）自组装策略，设计并制造出层间距在0.35–0.53 nm的质子传输高效通道、成对脉冲抑制等功能的人工突触器，该技术有望在边缘计算、仿生感知、低功耗AI芯片等领域实现产业化应用。该成果以“Permeable Proton Transport and Hydrogenation Attained by ONCS Induced Graphene Nanosheet Film for Neuromorphic Memory Devices”为题发表在《Nano Letters》。
DOI: 10.1021/acs.nanolett.6c00609
3分钟超快充：新型石墨烯负极让钾/钠离子电池媲美燃油车加油
针对钠离子、钾离子电池因离子半径大导致的充电慢、循环寿命差等瓶颈，丁书凯课题组联合校内外专家，提出三纳米粒子协同体系（Tri-NPs），通过ONCS、SDBS胶束与二氧化硅纳米粒子的协同作用，可控合成了1D石墨烯空心球、2D多孔石墨烯和3D石墨烯筛三种多维结构。研究表明：钾离子电池在15.96 C高倍率下，3.76分钟即可充满且1250次循环容量保持率达94.5%；钠离子电池在17.86 C下，3.36分钟充满且3000次循环无明显衰减。该超快充性能为消除电动车“续航与补能焦虑”提供了技术方案。该成果以“A Triple-Nanoparticle System for Controlled Graphene Nanosheet Stacking: Enabling K/Na-Ion Battery Anodes with Ultra-Fast Charging Exceeding Petroleum Vehicle Refueling”为题发表在《Advanced Science》。
DOI: 10.1002/advs.202524370
课题组长期深耕有机纳米碳源（ONCS）技术，在存储器与储能物理等方向获得系列研究成果，广泛应用于锂、钾、钠等离子电池、无阳极锂金属电池、钙钛矿光电探测器等领域，相关成果发表于《Carbon》《Journal of Colloid and Interface Science》《ACS Applied Nano Materials》等权威期刊。
系列成果：
1. Ding, S. et al. Millimeter-scale laminar graphene matrix by organic molecule confinement reaction. Carbon N. Y. 161, 277–286 (2020).
2. Ding, S. et al. Organic molecule confinement reaction for preparation of the Sn nanoparticles@graphene anode materials in Lithium-ion battery. J. Colloid Interface Sci. 589, 308–317 (2021).
3. Nie, G. et al. SnCo nanoalloy/graphene anode constructed by microfluidic-assisted nanoprecipitation for potassium-ion batteries. ACS Appl. Nano Mater. 5, 2616–2625 (2022).
4. Chen, J. et al. High-performance lithium-ion batteries packs at low temperatures based on organic nano carbon source induced graphene film electric heater on quartz substrate. J. Energy Storage 65, 107275 (2023).
5. Ding, S. et al. Organic nano carbon source inducing 3D silica nanoparticles-graphene nanosheet layer on Cu current collector for high-performance anode-free lithium metal batteries. J. Colloid Interface Sci. 672, 543–551 (2024).
6. Ding, S. et al. Cobalt-catalyzed organic nano carbon source for hybrid hard carbon/graphite nanoribbon anode in high-potential potassium-ion batteries. J. Colloid Interface Sci. 691, 137414 (2025).
7. Han, B. et al. High-performance hybrid graphene-perovskite photodetector based on organic nano carbon source-induced graphene interdigital electrode film on quartz substrate. Carbon N. Y. 204, 547–554 (2023).
8. Fang, Z. et al. Synergy of strong/weak interface adhesion forces and Li2S additive enabling high performance full anode-free lithium-metal batteries. J. Mater. Chem. A 11, 25715–25723 (2023).
（核稿：罗道斌 编辑：刘倩）
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