Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers DynamicsOA
Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active photocathodes.Present work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic nanocrystals.When employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging process.Additionally,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky contact.Benefiting from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1) at 0.2 A g^(−1) under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 cycles.These results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.
Zelin Ma;Shiyao Wang;Zhuangzhuang Ma;Juan Li;Luomeng Zhao;Zhihuan Li;Shiyuan Wang;Yazhou Shuang;Jiulong Wang;Fang Wang;Weiwei Xia;Jie Jian;Yibo He;Junjie Wang;Pengfei Guo;Hongqiang Wang
State Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,School of Materials Science and Engineering Department,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of ChinaKey Laboratory of Applied Surface and Colloid Chemistry,Shaanxi Key Laboratory for Advanced Energy Devices,Shaanxi Engineering Lab for Advanced Energy Technology,School of Materials Science and Engineering,National Ministry of Education,Shaanxi Normal University,Xi’an 710119,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518063,People’s Republic of ChinaState Key Laboratory of Solidification Processing,School of Materials Science and Engineering Department,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518063,People’s Republic of ChinaState Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,People’s Republic of China
动力与电气工程
Photoassisted lithium-ion batteriesBulk heterojunctionCarrier dynamicsTiO2 nanofiberPlasmonic metal nanocrystals
《Nano-Micro Letters》 2025 (3)
P.440-454,15
supported by the project of the National Natural Science Foundation of China(52202115 and 52172101)Guangdong Basic and Applied Basic Research Foundation(2024A1515012325)the Natural Science Foundation of Chongqing,China(CSTB2022NSCQ-MSX1085)the Shaanxi Science and Technology Innovation Team(2023-CXTD-44)the Fundamental Research Funds for the Central Universities(G2022KY0604).
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