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Designing interstitial boron-doped tunnel-type vanadium dioxide cathode for enhancing zinc ion storage capability

Carbon Energy 2023年第8期5卷 78-86页

作者： Shiwen Wang Hang Zhang Kang Zhao Wenqing Liu nairui luo Jianan Zhao Shide Wu Junwei Ding Shaoming Fang Fangyi Cheng Henan Provincial Key Laboratory of Surface&Interface Science College of Materials and Chemical EngineeringZhengzhou University of Light IndustryZhengzhouChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjinChina

Chemical doping is a powerful method to intrinsically tailor the electrochemical properties of electrode ***,an interstitial boron-doped tunnel-type VO_(2)(B)is constructed via a facile hydrothermal *** analysis techniques demonstrate that boron resides in the interstitial site of VO_(2)(B)and such interstitial doping can boost the zinc storage kinetics and structural stability of VO_(2)(B)cathode during ***,we found that the boron doping level has a saturation limit peculiarity as proved by the quantitative ***,the 2 at.%boron-doped VO_(2)(B)shows enhanced zinc ion storage performance with a high storage capacity of 281.7 mAh g^(-1) at 0.1 A g^(-1),excellent rate performance of 142.2 mAh g^(-1) at 20 A g^(-1),and long cycle stability up to 1000 cycles with the capacity retention of 133.3 mAh g^(-1) at 5 A g^(-1).Additionally,the successful preparation of the boron-doped tunneltype α-MnO_(2) further indicates that the interstitial boron doping approach is a general strategy,which supplies a new chance to design other types of functional electrode materials for multivalence batteries.

关键词： cathode interstitial boron doping tunnel-type VO_(2)(B) zinc ion battery

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The role of TRPP2 in agonist-induced gallbladder smooth muscle contraction

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Science China(Life Sciences) 2016年第4期59卷 409-416页

作者： Xingguo Zhong Jie Fu Kai Song nairui Xue Renhua Gong Dengqun Sun Huilai luo Wenzhu He Xiang Pan Bing Shen Juan Du Department of Surgery Anhui Provincial Corps Hospital of Chinese People's Armed Police Force Department of Physiology Anhui Medical University Central Laboratory of Molecular And Cellular Biology of Basic Medical College Anhui Medical University

TRPP2 channel protein belongs to the superfamily of transient receptor potential(TRP) channels and is widely expressed in various tissues, including smooth muscle in digestive gut. Accumulating evidence has demonstrated that TRPP2 can mediate Ca^(2+) release from Ca^(2+) stores. However, the functional role of TRPP2 in gallbladder smooth muscle contraction still remains unclear. In this study, we used Ca^(2+) imaging and tension measurements to test agonist-induced intracellular Ca^(2+) concentration increase and smooth muscle contraction of guinea pig gallbladder, respectively. When TRPP2 protein was knocked down in gallbladder muscle strips from guinea pig, carbachol(CCh)-evoked Ca^(2+) release and extracellular Ca^(2+) influx were reduced significantly, and gallbladder contractions induced by endothelin 1 and cholecystokinin were suppressed markedly as well. CCh-induced gallbladder contraction was markedly suppressed by pretreatment with U73122, which inhibits phospholipase C to terminate inositol 1,4,5-trisphosphate receptor(IP3) production, and 2-aminoethoxydiphenyl borate(2APB), which inhibits IP3 recepor(IP3R) to abolish IP3R-mediated Ca^(2+) release. To confirm the role of Ca^(2+) release in CCh-induced gallbladder contraction, we used thapsigargin(TG)-to deplete Ca^(2+) stores via inhibiting sarco/endoplasmic reticulum Ca^(2+)-ATPase and eliminate the role of store-operated Ca^(2+) entry on the CCh-induced gallbladder contraction. Preincubation with 2 μmol L^(-1) TG significantly decreased the CCh-induced gallbladder contraction. In addition, pretreatments with U73122, 2APB or TG abolished the difference of the CCh-induced gallbladder contraction between TRPP2 knockdown and control groups. We conclude that TRPP2 mediates Ca^(2+) release from intracellular Ca^(2+) stores, and has an essential role in agonist-induced gallbladder muscle contraction.

关键词： TRP channel TRPP2 contraction gallbladder smooth muscle Ca^2+ store inositol 1 4 5-trisphosphate receptor

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