As one of new electrical energy storage systems, supercapacitors possess higher energy density than conventional capacitors and larger power density than batteries, integrating substantial merits with high energy, lar...As one of new electrical energy storage systems, supercapacitors possess higher energy density than conventional capacitors and larger power density than batteries, integrating substantial merits with high energy, large power delivery, long cycle life, obvious safety, and low cost. However, the unsatisfying energy density is the inhabiting issue for the wide commercial applications. As the energy density(E, W h kg?1) is directly proportional to specific capacitance(C, F g?1) and the square of operating voltage(V, V), in this review, we summarize the recent progress in two sections: the exploration of high-performance electrode materials to achieve high specific capacitance and the construction of high-voltage supercapacitor systems for high working voltage. The progressive explorations and developments in supercapacitors could guide the future research towards high-performance, low-cost, and safe energy storage devices.展开更多
Evolving flexible electronics requires the development of high-mobility and low-power organic field-effect transistors(OFETs)that are crucial for emerging displays,sensors,and label technologies.Among diverse material...Evolving flexible electronics requires the development of high-mobility and low-power organic field-effect transistors(OFETs)that are crucial for emerging displays,sensors,and label technologies.Among diverse materials,polymer gate dielectrics and two-dimensional(2D)organic crystals have intrinsic flexibility and natural compatibility with each other for OFETs with high performance;however,their combination lacks non-impurity and non-damage construction strategies.In this study,we developed a desirable OFET system using damage-free transfer of 2D organic single crystal,dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene on a unique polymer dielectric layer,poly(amic acid)(PAA).Benefiting from the unique PAA surface nanostructure and the long-range ordered characteristics of the 2D organic single crystal,the resulting OFETs show remarkable performance with high mobility and low operating voltage of 18.7 cm^(2) V^(−1) s^(−1) and−3 V,respectively.The result indicates that combining polymer gate dielectric with 2D organic single crystal using a high-quality method can produce flexible electronic devices with high performance.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.51572129&U1407106)Natural Science Foundation of Jiangsu Province(Grant No.BK20131349)+1 种基金A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)the Fundamental Research Funds for the Central Universities(Grant No.30915011204)
文摘As one of new electrical energy storage systems, supercapacitors possess higher energy density than conventional capacitors and larger power density than batteries, integrating substantial merits with high energy, large power delivery, long cycle life, obvious safety, and low cost. However, the unsatisfying energy density is the inhabiting issue for the wide commercial applications. As the energy density(E, W h kg?1) is directly proportional to specific capacitance(C, F g?1) and the square of operating voltage(V, V), in this review, we summarize the recent progress in two sections: the exploration of high-performance electrode materials to achieve high specific capacitance and the construction of high-voltage supercapacitor systems for high working voltage. The progressive explorations and developments in supercapacitors could guide the future research towards high-performance, low-cost, and safe energy storage devices.
基金financially supported by the National Key R&D Program(2021YFA0717900)the National Natural Science Foundation of China(91833306,51725304,51903186,and 62004138)Beijing National Laboratory for Molecular Sciences(BNLMS202006)。
文摘Evolving flexible electronics requires the development of high-mobility and low-power organic field-effect transistors(OFETs)that are crucial for emerging displays,sensors,and label technologies.Among diverse materials,polymer gate dielectrics and two-dimensional(2D)organic crystals have intrinsic flexibility and natural compatibility with each other for OFETs with high performance;however,their combination lacks non-impurity and non-damage construction strategies.In this study,we developed a desirable OFET system using damage-free transfer of 2D organic single crystal,dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene on a unique polymer dielectric layer,poly(amic acid)(PAA).Benefiting from the unique PAA surface nanostructure and the long-range ordered characteristics of the 2D organic single crystal,the resulting OFETs show remarkable performance with high mobility and low operating voltage of 18.7 cm^(2) V^(−1) s^(−1) and−3 V,respectively.The result indicates that combining polymer gate dielectric with 2D organic single crystal using a high-quality method can produce flexible electronic devices with high performance.
