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储氢单元在天然气管网中的定容优化研究 [PDF]

open access: yes全球能源互联网, 2022
针对当前碳排放量过高的问题,在保证安全的前提下,将P2H装置制得的氢气掺混进入天然气管网进行运输,是当前降低碳排放的有效途径。文章建立了考虑储氢单元的天然气管网运行的混合整数线性规划模型,以最小化系统运行成本和最大化系统碳减排量为目标函数,考虑储氢单元、P2H制氢量和天然气管网运行约束,采用了ε约束法对多目标规划问题求解,确定了不同减排目标下电转氢气装置和储氢罐在天然气管网中的配置策略。考虑了天然气管网中含储氢单元和不含储氢单元两种运行场景,通过算例分析不同场景下的碳减排量和运行成本 ...
周军, 李帅帅, 周轩, 梁光川
doaj   +1 more source

Retaining natural vegetation to safeguard biodiversity and humanity

open access: yesConservation Biology, Volume 37, Issue 3, June 2023., 2023
Abstract Global efforts to deliver internationally agreed goals to reduce carbon emissions, halt biodiversity loss, and retain essential ecosystem services have been poorly integrated. These goals rely in part on preserving natural (e.g., native, largely unmodified) and seminatural (e.g., low intensity or sustainable human use) forests, woodlands, and ...
Jeremy S. Simmonds   +19 more
wiley   +1 more source

施加脱硫石膏对盐碱土固碳的影响

open access: yesShuitu Baochi Xuebao, 2021
增加陆地生态系统碳固定能力能有效缓解大气CO2升高引起的温室效应。以干旱区典型盐土和碱土为研究对象,通过室内土柱模拟试验,研究不同施用量脱硫石膏(0,10,20,21.78,30,40 t/hm2)对盐土和碱土生态系统碳储量(包括土壤碳储量和生物量碳储量)的影响。结果表明:与对照相比,施加脱硫石膏盐土总碳储量(C)降低8.78%~15.72%,其中以土壤有机碳储量降低为主;碱土总碳储量(C)增加5.00%~23.94%,其中以土壤无机碳增加为主。脱硫石膏施加后盐土总生物量碳储量(C)较对照平均降低23 ...
王著峰   +3 more
doaj  

基于PLUS和InVEST模型的安徽省碳储量演化分析与预测

open access: yesShuitu Baochi Xuebao, 2023
为探讨安徽省土地利用变化对碳储量的影响,揭示碳储量时空演化特征和未来变化趋势,通过耦合InVEST模型碳储存模块和PLUS模型,分析1990—2018年安徽省土地利用类型和碳储量时空演化特征,并从自然发展和生态保护情景预测2034年、2050年安徽省碳储量变化趋势。结果表明:安徽省1990年、2000年、2010年、2018年的碳储量分别为1 218.37×106,1 215.65×106,1 211.39×106,1 206.18×106 t,呈现逐年减少趋势,主要由于耕地、林地被侵占。此外 ...
孙方虎   +6 more
doaj  

退耕还林地在植被恢复初期碳储量及分配格局研究

open access: yesShuitu Baochi Xuebao, 2007
利用标准样方法研究了川西最主要的两种退耕还林植被(苦竹林和桦木林)在恢复初期生态系统碳储量、碳素密度以及空间分配特征.结果表明:(1)苦竹不同器官碳素密度为0.348 5~0.518 6 gC/g,桦木不同器官碳素密度为0.451 9~0.513 7 gC/g;(2)苦竹林林下枯落物的碳素密度为0.341 7 gC/g,桦木林林下枯落物的碳素密度为0.395 3 gC/g;(3)不同植物器官的碳储量分配与各器官的生物量显著相关.苦竹林分中竹秆生物量占48.87%,其碳储量占53.06 ...
黄从德, 张健, 邓玉林, 杨万勤
doaj   +2 more sources

Ionic‐Liquid‐Assisted Synthesis of NiTe/CoTe Heterostructure With Te Vacancies in N, P, and F Co‐Doped Hollow Carbon Nanorods for Efficient Alkaline Hydrogen Evolution and High‐Performance Flexible Supercapacitors

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi   +7 more
wiley   +1 more source

Multiscale Study of a Synergistic System in Carbon‐Coated Multimetal‐Based Selenides Toward Rapid and Highly Stable Sodium Storage

open access: yesRare 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

Sodiumation of Biomass‐Derived Quinones Enables High‐Rate and Long‐Life Cathodes for Sodium‐Ion Batteries

open access: yesRare 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

Redox Reaction and Dissolution Analysis for Hollow C Nanospheres Comprising N‐Doped C Framework With Abundant Ni–Co Heteronuclear Catalysts for Highly Durable K‒Te Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho   +7 more
wiley   +1 more source

Electronic Modulation of Cu Sites via Iron Incorporation in Cu5FeS4 Bimetallic Sulfide for High‐Efficiency Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The sluggish kinetics of the oxygen reduction reaction (ORR) necessitate developing oxygen electrodes with enhanced electrocatalytic activity for practical zinc–air battery applications. In this study, an iron‐doped copper sulfide electrocatalyst (CuFeNS‐PNC) anchored on metal–organic framework‐derived carbon substrates was designed, featuring
Taichong Chitboonyakasem   +4 more
wiley   +1 more source

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