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| 1 | Methanol electro-oxidation to formate on iron-substituted lanthanum cobaltite perovskite oxides显示文摘Electrochemically producing formate by oxidizing methanol is a promising way to add value to methanol.Noble metal-based electrocatalysts,which have been extensively studied for the methanol oxidation reaction,can catalyze the complete oxidation of methanol to carbon dioxide,but not the mild oxidation to formate.As a result,exploring efficient and earth-abundant electrocatalysts for formate production from methanol is of interest.Herein,we present the electro-oxidation of methanol to formate,catalyzed by iron-substituted lanthanum cobaltite(LaCo_(1-x)Fe_(x)O_(3)).The Fe/Co ratio in the oxides greatly influences the activity and selectivity.This effect is attributed to the higher affinity of Fe and Co to the two reactants:CH3OH and OH,respectively.Because a balance between these affinities is favored,LaCo_(0.5)Fe_(0.5)O_(3) shows the highest formate production rate,at 24.5 mmol h^(-1) g_(oxide)^(-1),and a relatively high Faradaic efficiency of 44.4%in a series of(LaCo_(1-x)Fe_(x)O_(3))samples(x=0.00,0.25,0.50,0.75,1.00)at 1.6 V versus a reversible hydrogen electrode. | Fanxu Meng Chencheng Dai Zheng Liu Songzhu Luo Jingjie Ge Yan Duan Gao Chen Chao Wei Riccardo Ruixi Chen Jiarui Wang Daniel Mandler Zhichuan J.Xu | 2022 | eScience2022，2，1： | 1 |
| 2 | D-π-D molecular layer electronically bridges the NiO_(x) hole transport layer and the perovskite layer towards high performance photovoltaics显示文摘Nickel oxide (NiO_(x)) has significant cost and stability advantages over poly[bis (4-phenyl)(2,4,6-trimethyl phenyl)amine](PTAA) for inverted p-i-n perovskite solar cells (PSCs),but the poor NiO_(x)/perovskite contact stemming from some reactive species at the interface led to suboptimal device performance.To solve this problem,we take a multiple donor molecule approach,using 3,3’-(4,8-bis(hexylthio)benzo[1,2-b:4,5-b’]dithiophene-2,6-diyl)bis(10-(6-bromohexyl)-10H-phenoxazine)(BDT-POZ) as an example,to modify the NiO_(x)/perovskite interface.The primary goal was to reduce the under-coordinated Ni^(≥3+) cations via electron transfer from the donor molecules to NiO_(x),thus mitigating the detrimental reactions between perovskite and NiO_(x).Equally importantly,the hole extraction at the interface was greatly enhanced after the organic donor modification,since the hydrophobic species atop NiO_(x) not only enabled pinhole-free crystallization of the perovskite but also properly tuned the interfacial energy level alignment.Consequently,the PSCs with NiO_(x)/BDT-POZ HTL achieved a high power conversion efficiency (PCE) up to 20.16%,which compared excellently with that of the non-modified devices (17.83%).This work provides a new strategy to tackle the exacting issues that have so far impeded the development of NiO_(x) based PSCs. | Rongguo Xu Xiuwen Xu Ruixi Luo Yu Li Gaopeng Wang Tongfa Liu Ning Cai Shihe Yang | 2022 | Journal of Energy Chemistry2022，31，4： | 0 |
| 3 | A Hf_(0.5)Zr_(0.5)O_(2)ferroelectric capacitor-based half-destructive read scheme for computing-in-memory显示文摘The emerging non-volatile memories(NVMs),including resistive random access memory(RRAM)[1],phase-change memory(PCM)[2],and ferroelectric random access memory(Fe RAM)[3],have broad application prospects owing to their non-volatility and near-zero static energy consumption.Compared to other NVMs,ferroelectric capacitors(Fe CAPs)ofer advantages in energy consumption and endurance.However,the destructive read operation of capacitors(e.g.,DRAMs and Fe CAPs)destroys the stored data. | Yulin ZHAO Yuan WANG Donglin ZHANG Zhongze HAN Qiao HU Xuanzhi LIU Qingting DING Jinhui CHENG Wenjun ZHANG Yue CAO Ruixi ZHOU Qing LUO Jianguo YANG Hangbing LV | 2023 | Science China(Information Sciences)2023，66，5： | 0 |
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