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| 1 | Lignin derived hierarchical porous carbon with extremely suppressed polyselenide shuttling for high-capacity and long-cycle-life lithium-selenium batteries显示文摘Lithium-selenium(Li-Se)batteries have attracted considerable attentions for next-generation energy storage systems owing to high volumetric capacity of 3265 m Ah cm^(-3) and excellent electronic conductivity(~10^(-5)S cm^(-1))of selenium.However,the shuttling effect and capacity fading prevent their wide applications.Herein we report a low-cost strategy for scalable fabrication of lignin derived hierarchical porous carbon(LHPC)as a new high-loading Se host for high-capacity and long-term cycling Li-Se batteries in carbonate electrolyte.The resulting LHPC exhibits three-dimensional(3D)hierarchically porous structure,high specific surface area of 1696 m^(2) g^(-1),and hetero-atom doping(O,S),which can effectively confine the Se particles into the micropores,and meanwhile,offer effective chemical binding sites for selenides from hetero-atoms(O,S).As a result,our Li-Se batteries based on Se@LHPC demonstrate high capacity of 450 m Ah g^(-1) at 0.5 C after 500 cycles,with a low capacity fading rate of only 0.027%.The theoretical simulation confirmed the strong affinity of selenides on the O and S sites of LHPC effectively mitigating the Se losing.Therefore,our strategy of using lignin as the low-cost precursor of hierarchically porous carbon for high-loading Se host offers new opportunities for high-capacity and long-life Li-Se batteries. | Pengfei Lu Fangyan Liu Feng Zhou Jieqiong Qin Haodong Shi Zhong-Shuai Wu | 2021 | Journal of Energy Chemistry2021，30，4： | 5 |
| 2 | 2D hierarchical yolk-shell heterostructures as advanced host-interlayer integrated electrode for enhanced Li-S batteries显示文摘Lithium sulfur(Li-S)batteries hold great promising for high-energy-density batteries,but appear rapid capacity fading due to the lack of overall and elaborated design of both sulfur host and interlayer.Herein,we developed a novel two-dimensional(2D)hierarchical yolk-shell heterostructure,constructed by a graphene yolk,2D void and outer shell of vertically aligned carbon-mediated MoS2 nanosheets(G@void@MoS2/C),as advanced host-interlayer integrated electrode for Li-S batteries.Notably,the 2D void,with a typical thickness of^80 nm,provided suitable space for loading and confining nano sulfur,and vertically aligned ultrathin MoS2 nanosheets guaranteed enriched catalytically active sites to effectively promote the transition of soluble polysulfides.The conductive graphene yolk and carbon mediated shell sufficiently accelerated electron transport.Therefore,the integrated electrode of G@void@MoS2/C not only exceptionally confined the sulfur/polysulfides in 2D yolk-shell heterostructures,but also achieved catalytic transition of the residual polysulfides dissolved in electrolyte to solid Li2S2/Li2S,both of which synergistically achieved an extremely low capacity fading rate of 0.05%per cycle over 1000 times at 2C,outperforming most reported Mo based cathodes and interlayers for Li-S batteries.2D hierarchical yolkshell heterostructures developed here may shed new insight on elaborated design of integrated electrodes for Li-S batteries. | Yanfeng Dong Pengfei Lu Haodong Shi Jieqiong Qin Jian Chen Wencai Ren Hui-Ming Cheng Zhong-Shuai Wu | 2019 | Journal of Energy Chemistry2019，28，9： | 4 |
| 3 | In-situ transient photovoltage study on interface electron transfer regulation of carbon dots/NiCo_(2)O_(4) photocatalyst for the enhanced overall water splitting activity显示文摘Photocatalytic hydrogen production by overall water solar-splitting is a prospective strategy to solve energy crisis.However,the rapid recombination of photogenerated electron–hole pairs deeply restricts photocatalytic activity of catalysts.Here,the in-situ transient photovoltage(TPV)technique was developed to investigate the interfacial photogenerated carrier extraction,photogenerated carrier recombination and the interfacial electron delivery kinetics of the photocatalyst.The carbon dots/NiCo_(2)O_(4)(CDs/NiCo_(2)O_(4))composite shows weakened recombination rate of photogenerated carriers due to charge storage of CDs,which enhances the photocatalytic water decomposition activity without any scavenger.CDs can accelerate the interface electron extraction about 0.09 ms,while the maximum electron storage time by CDs is up to 0.7 ms.The optimal CDs/NiCo_(2)O_(4)composite(5 wt.%CDs)displays the hydrogen production of 62µmol·h^(−1)·g^(−1) and oxygen production of 29µmol·h^(−1)·g^(−1) at normal atmosphere,which is about 4 times greater than that of pristine NiCo_(2)O_(4).This work provides sufficient evidence on the charge storage of CDs and the interfacial charge kinetics of photocatalysts on the basis of in-situ TPV tests. | Haodong Nie Yan Liu Yi Li Kaiqiang Wei Zhenyu Wu Hong Shi Hui Huang Yang Liu Mingwang Shao Zhenhui Kang | 2022 | Nano Research2022，15，3： | 2 |
| 4 | Advanced design of cathodes and interlayers for high-performance lithium-selenium batteries显示文摘Lithium-selenium(Li-Se)batteries have attracted ever-increasing attention owing to high volumetric capacity comparable to lithium-sulfur batteries and excellent electronic conductivity of Se.However,unsatisfactory energy density and cycling life of Li-Se batteries mainly caused by low utilization of Se and shuttle effect of polyselenides(PSes)seriously prevent their commercial applica-tions.Herein,this work systematically reviews the recent advances of the state-of-the-art cathodes and interlayers in high-performance Li-Se batteries.First,the fundamental chemistries of Li-Se batteries are introduced in terms of var-ious Se precursors and electrochemical behaviors.Second,the main strategies in cathodes and interlayers for addressing poor conductivity of Se and shuttle effects of PSes are summarized as three-dimensional conductive skeletons for Se,physical confinement of Se,chemisorption and catalytic conversion of PSes,and free-standing interlayers and interlayers on separators.Further,the synthesis strategies and enhanced electrochemical performance are specially exemplified to highlight the possible enlightenments for constructing advanced cathodes and interlayers.Finally,the future challenges and perspectives of advanced cathodes and interlayers in high-performance Li-Se batteries are briefly discussed. | Yanfeng Dong Pengfei Lu Yajun Ding Haodong Shi Xinliang Feng Zhong-Shuai Wu | 2021 | SusMat2021，1，3： | 1 |
| 5 | Perovskite bridging PbS quantum dot/polymer interface enables efficient solar cells显示文摘Conjugated polymers have been explored as promising hole-transporting layer(HTL)in lead sulfide(PbS)quantum dot(QD)solar cells.The fine regulation of the inorganic/organic interface is pivotal to realize high device performance.In this work,we propose using CsPbI_(3) QDs as the interfacial layer between PbS QD active layer and organic polymer HTL.The relative soft perovskite can mediate the interface and form favorable energy level alignment,improving charge extraction and reducing interfacial charge recombination.As a result,the photovoltaic performance can be efficiently improved from 10.50%to 12.32%.This work may provide new guidelines to the device structural design of QD optoelectronics by integrating different solutionprocessed semiconductors. | Xing Meng Yifan Chen Fan Yang Jieqi Zhang Guozheng Shi Yannan Zhang Haodong Tang Wei Chen Yang Liu Lin Yuan Shaojuan Li Kai Wang Qi Chen Zeke Liu Wanli Ma | 2022 | Nano Research2022，15，7： | 1 |
| 6 | China's policy framework for carbon capture,utilization and storage:Review,analysis,and outlook显示文摘Carbon capture,utilization,and storage(CCUS)is estimated to contribute substantial CO_(2)emission reduction to carbon neutrality in China.There is yet a large gap between such enormous demand and the current capacity,and thus a sound enabling environment with sufficient policy support is imperative for CCUS development.This study reviewed 59 CCUS-related policy documents issued by the Chinese government as of July 2022,and found that a supporting policy framework for CCUS is taking embryonic form in China.More than ten departments of the central government have involved CCUS in their policies,of which the State Council,the National Development and Reform Commission(NDRC),the Ministry of Science and Technology(MOST),and the Ministry of Ecological Environment(MEE)have given the greatest attention with different focuses.Specific policy terms are further analyzed following the method of content analysis and categorized into supply-,environment-and demand-type policies.The results indicate that supply-type policies are unbalanced in policy objectives,as policy terms on technology research and demonstration greatly outnumber those on other objectives,and the attention to weak links and industrial sectors is far from sufficient.Environment-type policies,especially legislations,standards,and incentives,are inadequate in pertinence and operability.Demand-type policies are absent in the current policy system but is essential to drive the demand for the CCUS technology in domestic and foreign markets.To meet the reduction demand of China's carbon neutral goal,policies need to be tailored according to needs of each specific technology and implemented in an orderly manner with well-balanced use on multiple objectives. | Qiao MA Shan WANG Yan FU Wenlong ZHOU Mingwei SHI Xueting PENG Haodong LV Weichen ZHAO Xian ZHANG | 2023 | Frontiers in Energy2023，17，3： | 1 |
| 7 | Ti,F Codoped Sodium Manganate of Layered P2-Na_(0.7)MnO_(2.05)Cathode for High Capacity and Long-Life Sodium-Ion Battery显示文摘The development of layered sodium manganese oxide cathode materials with high capacity and structural stability is one of the keys to boosting the performance of sodium-ion batteries(SIBs),but it remains a great challenge.Herein,a titanium and fluorine codoped P2 type sodiummanganate of Na_(0.7)MnO_(2.05)cathode material(NMO-0.1TF)is developed as a high-capacity and long-durable cathode for highperformance SIBs.Titanium and fluorine codoping significantly reduces the structural deformation,synergistically improves structural stabilization,inhibits the formation of irreversible phases,and enhances electrochemical kinetics.As a result,the NMO-0.1TF||Na battery working in the voltage ranges of 2.0-4.2 V exhibits a high specific capacity of 227 mAh g^(−1)at a current density of 20 mA g^(−1)and an excellent rate performance(76 mAh g^(−1)at a high current density of 3 A g^(−1)).Such a battery still delivers an outstanding cycle stability,shows a high initial discharge capacity of 133 mAh g^(−1)at 1 A g^(−1),and maintains the initial capacity of 96.2%after 200 cycles.More importantly,the assembled full battery of NMO-0.1TF||hard carbon validates high capacity and impressive cyclability.Therefore,this codoped NMO-0.1TF cathode with high capacity and excellent stability represents a brilliantly practical application for developing high energy density SIBs. | Pengchao Wen Haodong Shi Dandan Guo Aimin Wang Yan Yu Zhong-Shuai Wu | 2023 | Renewables2023，1，1： | 0 |
| 8 | Hierarchically Structured Nb_(2)O_5 Microflowers with Enhanced Capacity and Fast-Charging Capability for Flexible Planar Sodium Ion Micro-Supercapacitors显示文摘Planar Na ion micro-supercapacitors(NIMSCs) that offer both high energy density and power density are deemed to a promising class of miniaturized power sources for wearable and portable microelectron-ics. Nevertheless, the development of NIMSCs are hugely impeded by the low capacity and sluggish Na ion kinetics in the negative electrode.Herein, we demonstrate a novel carbon-coated Nb_(2)O_5 microflower with a hierarchical structure composed of vertically intercrossed and porous nanosheets, boosting Na ion storage performance. The unique structural merits, including uniform carbon coating, ultrathin nanosheets and abun-dant pores, endow the Nb_(2)O_5 microflower with highly reversible Na ion storage capacity of 245 mAh g^(-1) at 0.25 C and excellent rate capability.Benefiting from high capacity and fast charging of Nb_(2)O_5 microflower, the planar NIMSCs consisted of Nb_(2)O_5 negative electrode and activated car-bon positive electrode deliver high areal energy density of 60.7 μWh cm^(-2),considerable voltage window of 3.5 V and extraordinary cyclability. Therefore, this work exploits a structural design strategy towards electrode materials for application in NIMSCs, holding great promise for flexible microelectronics. | Jiaxin Ma Jieqiong Qin Shuanghao Zheng Yinghua Fu Liping Chi Yaguang Li Cong Dong Bin Li Feifei Xing Haodong Shi Zhong‑Shuai Wu | 2024 | Nano-Micro Letters2024，16，4： | 0 |
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