Results 21 to 30 of about 1,458,630 (162)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Proton exchange membrane fuel cells (PEMFCs) require advanced bipolar plate coatings to enhance efficiency, durability, and commercialization potential. This review presents a systematic framework for evaluating and designing bipolar plate coatings, integrating material selection, performance metrics, deposition techniques, and future ...
Shijie Li +12 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 通过对子午岭林区顶级植被辽东栎群落0—100 cm土层有机无机胶结物质含量与类型、土壤大团聚体稳定性进行野外调查采样与室内测定，对胶结物质含量与分布及其对大团聚体稳定性的影响进行了研究，探讨了不同胶结物质对大团聚体稳定性的影响。结果表明：（1）土壤有机碳和碳酸钙含量在剖面上呈现出完全相反的分布规律。有机碳含量随土层的增加而降低，其中0—20 cm土层中有机碳含量显著高于20—100 cm土层；而碳酸钙含量随土层的增加而增加，其中20—100 cm土层中碳酸钙含量显著高于0—20 cm土层 ...
王子龙 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Shuitu Baochi Xuebao目的探究干旱河谷区土壤有机碳组分及其稳定性变化特征，明确环境因子与土壤有机碳组分及其稳定性之间的关系，为生态脆弱区固碳减排的系统管理提供依据。方法选择西藏波密干旱河谷区不同坡向（阴坡、阳坡、半阴坡、半阳坡）、坡位（坡下、坡中、坡上） 0~30 cm土壤为研究对象，测定土壤理化性质、土壤有机碳及其组分。结果1）阴坡土壤有机碳质量分数为11.37~34.74 g/kg，相较于半阴坡、半阳坡、阳坡分别提高55%、138%、292%。土壤颗粒有机碳、易氧化有机碳、矿质结合态有机碳 ...
褚保森 +6 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 以探讨荒漠草原表层土壤粒径分布分形、不同粒径有机碳含量、碳库管理指数特征及其关系为目的,通过野外调查选取宁夏回族自治区盐池县花马池镇荒漠草原柠条锦鸡儿(Caragana korshinskii)、黑沙蒿(Artemisia ordosica)、短花针茅(Stipa breviflora)、蒙古冰草(Agropyron mongolicum)4种典型植被作为研究对象,采集典型植被冠下和丛间2种生境下表层(0-5 cm)土壤,分析不同植被表层土壤不同粒径有机碳含量、土壤碳库动态变化特征及其相关性。结果表明:(
张义凡, 陈林, 张蚌蚌, 李学斌
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu +11 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 不同开垦年限黑土土壤有机碳及其组分含量变化的研究结果表明:土壤开垦前50年,黑土耕层及犁底层总有机碳及其组分含量下降迅速,土壤有机碳的氧化稳定性系数变化强烈。黑土开垦130年后,有机碳及各组分含量基本上处于相对稳定状态。黑土耕作200年,耕层总有机碳含量损失幅度约1.76%～24.81%。有机碳组分中,FA-C受开垦年限影响相对较小,Hu-C受开垦年限影响最大。
于君宝 刘景双 王金达 刘淑霞 齐小宁 王洋 王国平
doaj +2 more sources
长期覆膜旱地苹果园表层土壤“隐性”退化下活性有机碳与酶活性差异
Shuitu Baochi Xuebao, 2021 为探明陇东旱塬雨养农业区旱作节水措施下黄绵土物理稳定性机制和化学活性机制，揭示表层土壤有机碳贮存对土壤物理"隐性"退化的响应机制。以陇东旱塬区不同覆膜年限（2，4，6年）的苹果园表层土壤（0—20 cm）为对象，对土壤物理性状、质地分级进行判断，监测微生物量碳（MBC）、易氧化有机碳（EOC）、颗粒有机碳（POC）、可溶性有机碳（DOC）等指标的动态变化，表征土壤有机碳变化趋势，借助β-1，4-木糖苷酶（βX）、β-1，4-葡萄糖苷酶（βG）、纤维二糖水解酶（CBH）活性表征土壤碳代谢循环特性 ...
孙文泰 +5 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu +4 more
wiley +1 more source